Consulta: subjectFacets:"Computed tomography"
Registros recuperados: 37
Data/hora: 01/06/2024 05:55:13

Classical and computed tomographic anatomical analyses in a not-so-cryptic Alviniconcha species complex from hydrothermal vents in the SW Pacific
Provedor de dados: 5
Autores: Laming, Sven; Hourdez, Stéphane; Cambon-bonavita, Marie-anne; Pradillon, Florence.
The chemosymbiotic gastropod Alviniconcha (Provannidae), first described in 1988, is one of the most emblematic hydrothermal-vent taxa described from the Central Indian Ridge and the Southwest (SW) Pacific. Symbiotic bacteria found in the gill of Alviniconcha are thought to be their principal source of nutrition. In the SW Pacific, species distributions for A. kojimai, A. boucheti – and to a lesser extent A. strummeri – overlap. While Alviniconcha species do not appear to truly co-exist in these highly energetic but spatially limited habitats, certain species regularly co-occur within a single vent field and in rare instances, the same edifice. Past research suggests that SW-Pacific Alviniconcha species might aggregate around fluids with distinct...
Tipo: Text
Palavras-chave: Deep sea; Chemosymbiotic; Periostracum; Gastropod; Habitat partitioning; Computed tomography; Histology; Taxonomy; 3D model.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00628/74048/73459.pdf

Three Dimensional Morphometry of Distal Femur to Design Knee Prosthesis for Indonesian Population
Provedor de dados: 77
Autores: Magetsari,Rahadyan; Suyitno,; Dharmastiti,Rini; Salim,Urip A; Hidayat,Luthfi; Yudiman,Twody; Lanodiyu,Zikrina A; Dewo,Punto.
The objective of this study was to design custom-made prosthesis in a certain population, the morphometry needs to be measured. The results of this study were expected to provide basic data to design the ideal size of the total knee arthoplasty prosthesis for Indonesian population. This was an anthropometric study conducted on 100 healthy Indonesian population based on Computer Tomographic (CT) imaging on the distal femur resected surface. The parameters being used were Femoral Medio Lateral (fML) length, Femoral Antero Posterior (fAP) length, Femoral Medial Antero Posterior (fMAP) length, Femoral Lateral Antero Posterior (fLAP) length, and Femoral Aspect Ratio (FR). We found that the mean fAP and fML were 54.60±5.71 and 65.98±6.51, respectively. The...
Tipo: Journal article
Palavras-chave: Distal femur morphometry; Computed tomography; Knee prosthesis; Indonesian population.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400010

Pneumatization of crista galli in Pre-adult and Adult Stages
Provedor de dados: 77
Autores: Tetiker,Hasan; Kosar,Mehmet Ilkay; Çullu,Nesat; Sahan,Murat; Gençer,Ceren Uguz; Derin,Serhan.
The sinonasal region in humans is one of the regions that commonly shows anatomical variations. These variations can be easily diagnosed by paranasal CT evaluation. One of these variations is Crista galli pneumatization. In recent years, there have been opinions supporting the hypothesis that pneumatization originates from the frontal sinus. In this study, we planned to evaluate whether the presence of Crista galli pneumatization varied in pre-adult and adult periods. In this retrospectively designed study, 218 coronal paranasal CT images collected between 2012 and 2013 were evaluated. Patients were divided into two groups according to age under or over 18 years. In the group under the age of 18 (97 cases), pneumatization was detected in 2.1 % of samples,...
Tipo: Journal article
Palavras-chave: Crista galli; Paranasal sinuses; Pneumatization; Computed tomography.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000200021

Three Dimensional Morphometry of Proximal Femur to Design Best-Fit Femoral Stem for Indonesian Population
Provedor de dados: 77
Autores: Dewo,Punto; Suyitno,; Dharmastiti,Rini; Salim,Urip A; Hidayat,Luthfi; Wibowo,Prahesta A; Lanodiyu,Zikrina A; Magetsari,Rahadyan.
To design custom-made prosthesis in a certain population, the morphometry needs to be measured. The results of this study were expected to provide basic data to design the ideal size of the total hip arthoplasty prosthesis for Indonesian population. This was an anthropometric study conducted on sex matched 100 healthy Indonesian mongoloid race subjects based on Computer Tomographic (CT) imaging on the proximal femur. The parameters being used in this study were Femoral Head Offset (FHO), Femoral Head Position (FHP), Femoral Head Diameter (FHD), Neck-Shaft Angle (NSA), Anteroposterior Width (APW) and Mediolateral Width at 3 different locations, and Canal Flare Index (CFI). This study showed that Indonesian has smaller proximal femur morphometry as compared...
Tipo: Journal article
Palavras-chave: Proximal femur morphometry; Computed tomography; Femoral stem; Indonesian population.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000200004

Cone-beam Computed Tomography Analysis of the Frontal Sinus in Forensic Investigation
Provedor de dados: 77
Autores: Morais Marques,Jeidson Antonio; de Oliveira Musse,Jamilly; Cabús Gois,Bruno; Cavalcante Galvão,Luis Carlos; Paranhos,Luiz Renato.
The frontal sinuses can provide significant evidence for forensic identification. The peculiarity of the frontal sinus contours allows a precise and meticulous analysis, reducing the risk of errors on the part of the forensic experts. To describe the use of cone-beam computed tomography as an alternative to obtaining images of the frontal sinuses. In addition, it is proposed the adoption of some anatomic references to do the axial slicing, which should have its plan being tangent to the upper limit of the orbital cavities, as well as the sagittal slicing, which should be done under the midline, so that all sinus boundaries would be observed while error margin in obtaining comparative images would be reduced. The comparison of frontal sinus images by...
Tipo: Journal article
Palavras-chave: Computed tomography; Frontal sinus; Forensic medicine.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200046

Bilateral Bifid Mandibular Condyle: A Case Report
Provedor de dados: 77
Autores: Melo,Suzana Lubambo de; Barbosa,Joanna Martins Novais; Peixoto,Aline Carvalho; Santos,Thiago de Santana; Gerbi,Marleny.
The bifid mandibular condyle is an exceedingly rare anomaly, frequently diagnosed as an incidental finding in a panoramic radiograph. Its etiology and pathogenesis are unknown, though the most acceptable theory suggests that trauma is at the origin of the condition. This article reports a new case of bilateral bifid condyle in a 21-year-old female with history of trauma in childhood.
Tipo: Journal article
Palavras-chave: Condylar process; Mandibular condyle; Anatomic variation; Computed tomography.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300043

Bilateral Bifid Condylar Process
Provedor de dados: 77
Autores: Gunduz,Kaan; Avsever,Hakan; Karacayli,Umit.
The bifid condylar process is a rare alteration that is usually diagnosed as an incidental finding in a panoramic radiograph. The etiology of bifid condylar process is unknown, although the most tenable theory is that of traumatic origin. A 46-year-old woman was referred to our dental department with a complaint of pain and clicking on her temporomandibular joints. A panoramic radiograph showed bilateral bifid condyles Described with bifid condylar process varies from case to case, however in most cases are asymptomatic. The most common and predominant symptoms are temporomandibular joints sounds. The diagnosis of bifid condylar process is based on its radiographic appearance. Some researchers have indicated the necessity of imaging the anomaly by a second...
Tipo: Journal article
Palavras-chave: Bifid condylar process; Computed tomography; Panoramic.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300045

Clinico-Radiographic Examination of Odontogenic Myxoma with Displacement of Unerupted Upper Third Molar: Review of the Literature
Provedor de dados: 77
Autores: Altug,Hasan Ayberk; Gulses,Aydin; Sencimen,Metin.
Odotogenic myxoma is a benign tumor which presents in 3% to 6% of all odontogenic tumors. According to the WHO classification, multiple radiolucent areas of varying size, separated by straight or curved bony septa with poorly defined borders are the radiologic characteristics of the condition. We report the case of maxillary odontogenic myxoma in a 21 year old man. The radiological feature of the current case was interesting, due to the size of the lesion and severe displacement of the upper third molar.
Tipo: Journal article
Palavras-chave: Odontogenic myxoma; Orthopantomography; Computed tomography; Magnetic resonance imaging; Impacted molar; Cyst.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300045

Easy and Unbiased Determination of the Maxillary Sinus Volume
Provedor de dados: 77
Autores: Coronado,Cesar; Arriagada,Oscar; Suazo Galdames,Iván.
Determining the volume of the maxillary sinus is necessary in certain procedures. We present a simple method for estimating the volume of the maxillary sinus from groups 3, 5 and 9 coronal CT scan using the Cavalieri method combined with systematic sampling and evaluated randomized images. We used 10 dry skulls submitted to the TC. The actual volume was determined using silicone adapted to the maxillary sinus cavity. The estimated volume showed a high correlation with real volume, with no differences between groups. We concluded that it is possible to estimate without bias and with high accuracy the volume of the maxillary sinus from a minimum of 3 CT images obtained through randomized systematic sampling and the proposed method.
Tipo: Journal article
Palavras-chave: Cavalieri's principle; Volume; Computed tomography; Maxillary sinus.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000400051

Study of Morphology of Mandibular Canal Through Computed Tomography
Provedor de dados: 77
Autores: Lins,Carla Cabral dos Santos Accioly; Beltrão,Raphaelle Lima de Almeida; Gomes,Wilber Fellipe de Lima; Ribeiro,Márcia Maria.
This work aimed to study the morphology of the mandibular canal in Computed Tomography (CT scans), in order to assist in the clinical and surgical management of dental interventions in the mandible area. The material used was composed of 377 CT scans, selected by age (between 15 and 80 years), obtained during the period from 2011 to 2013, belonging to a private practice radiology of the city of Caruaru-PE, Brazil. 96 of these met the inclusion criteria, with 37.5% male and 62.5% female. Concerning the form of the mandibular canal, all images presented: a single canal, bilateral, extending from the mandibular to the mental foramen, without any morphological change. 37.5% had mandibular canals classified as type I, 22,92% canals type II and III and 16,66%...
Tipo: Journal article
Palavras-chave: Anatomy; Mandible; Computed tomography.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200023

Age Estimation from Ossification of the Medial Clavicular Epiphysis by Computed Tomography
Provedor de dados: 77
Autores: El Morsi,Doaa A.; Abo El-Atta,Hend M; ElMaadawy,Merit; Tawfik,Ahmed M; Batouty,Nihal M.
The current study intended to evaluate the accuracy of age estimation from the development of the medial clavicular epiphysis (sternal end of the clavicle) in Egyptian population using computed tomography (CT) and to develop a discriminant formula that can be used in Egyptians. The study was conducted on 142 subjects (84 males and 58 females) after taken informed consent. They were subjected to multi-slice CT on the medial end of clavicles of both sides. The results revealed that the age of non - union was seen at 8­17 years; incomplete union at 15­20 years and complete union was seen at 20 years. It is concluded that the ossification of medial clavicular end could be used for age estimation. Also CT is a good visualization tool to be used. Regression...
Tipo: Journal article
Palavras-chave: Forensic science; Age estimation; Ossification status; Medial clavicular epiphysis; Sternal end of the clavicle; Identification; Computed tomography.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400038

The Carpal Joint of the Donkey (Equus asinus): Morphological Investigation
Provedor de dados: 77
Autores: Alsafy,Mohamed A. M; El-Gendy,Samir A.A; Abou-Ahmed,Howaida M.
The current study has been achieved to be an essential resource for all veterinary practitioners that deal with the anatomy of the carpal joint of the donkey. Ten adult donkeys of both sexes were used in the current study. The topographical approach to the carpal joint was investigated in this study. Radiography and computed tomography (CT) of the carpus delineated the articulations of the carpal joint: radiocarpal, intercarpal, and carpometacarpal. The carpal ligaments were well delineated and the carpal canal was demonstrated with its content such as superficial digital flexor tendon (SDFT) and deep digital flexor tendon (DDFT). The contrast radiography visualized that the radiocarpal joint outpouched proximal to the accessory carpal bone by large...
Tipo: Journal article
Palavras-chave: Carpal joint; Donkey; Radiography; Computed tomography; Scanning electron microscopy.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300023

ミシシッピーアカミミガメに対するCTの臨床応用
Provedor de dados: 19
Autores: 永田, 祥代; 山田, 一孝; 上野, 博史; 古林, 与志安; 佐藤, 基佳; NAGATA, Sachiyo; YAMADA, Kazutaka; UENO, Hiroshi; KOBAYASHI, Yoshiyasu; SATO, Motoyoshi.
カメの体幹部は甲羅に覆われているため、単純Ｘ線撮影では得られる情報が少ない。そこで今回、ミシシッピーアカミミガメに対するＸ線CTによる断層撮影検査の有用性について検討した。まず基礎的検討として、臨床的に健康な6匹を用い、軟部組織、肺および骨のCT値を計測し、その結果からそれぞれの組織の観察に適したウインドウを設定した。また、病理学的検索の結果、全ての個体において肝臓の脂肪変性が認められ、肝臓のCT値が低い個体ほど変性の程度が大きく、CT値の高い個体ほど変性の程度が小さかった。このことから、肝臓のCT値の差により脂肪変性の程度を診断することが可能であった。さらに、臨床例についてCT検査を実施したところ、それぞれ、消化管内異物、肺炎および卵塞の診断が可能であった。以上の成績より、ミシシッピーアカミミガメの臨床診断において従来の単純Ｘ線撮影では読影が困難であった体幹部軟部組織について、CTにより詳細な情報を得ることが可能であった。よって、カメの臨床診断にはCTによる断層画像診断の積極的な利用が望まれる。 In turtles，conventional radiographic techniques give little information on the interna1 organs because of the density of the shell. Therefore， computed tomography (CT) was attempted in six clinically normal red-eared sliders(Trachemys scripta elegans). The CT values were measured in soft tissues such as the...
Palavras-chave: CT; CT値; 脂肪変性; カメ; 単純X線; Computed tomography; CT value; Fatty metamorphosis; Turtle; X-ray.
Ano: 2001
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2928

Computed tomography and magnetic resonance imaging findings for the initial stage of equine temporohyoid osteoarthropathy in a thoroughbred foal
Provedor de dados: 19
Autores: Inui, Tomohiro; Yamada, Kazutaka; Itoh, Megumi; Yanagawa, Masashi; Higuchi, Tohru; Watanabe, Akiko; Imamura, Yui; Urabe, Mako; Sasaki, Naoki.
Temporohyoid osteoarthropathy (THO) is characterized by progressive osseous proliferation of the stylohyoid and petrous temporal bones. Generally, diagnosis is confirmed by guttural pouch endoscopy and skull radiography. In the present case, computed tomography (CT) and magnetic resonance imaging (MRI) were performed in a 6-month-old Thoroughbred foal showing signs of head tilt and unilateral ear droop, consistent with the presence of a vestibular disease and unilateral facial paralysis. CT revealed bony fusion and proliferation of the right temporohyoid joint, while MRI revealed that otitis media was responsible for THO. In conclusion, this report suggests that CT and MRI provide a more concrete diagnosis and better understandings of the mechanism of THO...
Palavras-chave: Computed tomography; Magnetic resonance imaging; Otitis media; Temporohyoid osteoarthropathy.
Ano: 2017
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4571

Marbling evaluation by using X-ray computed tomography on beef primal cuts
Provedor de dados: 19
Autores: 口田, 圭吾; 高長, 拓也; 山下, 直樹; 山口, 悠; 李, 奇子; 山田, 一孝; KUCHIDA, Keigo; YAMADA, Kazutaka.
X線Computed Tomography（CT）画像から牛部分肉における脂肪交雑の評価の可能性およびその精度を検証した．供試牛2頭から胸最長筋を含む8つのブロック肉を採取しCT撮影を行った．その後，ブロック肉を厚さ2cm間隔でスライスし，ミラー型撮影装置を用いて高精細画像を得た．CT画像および高精細画像（同一面60組）をそれぞれ画像解析し，画像解析4形質（筋肉面積，脂肪面積割合，あらさ指数，細かさ指数）について，それぞれの相関関係を調査した．CT画像と高精細画像から算出した筋肉面積（r＝0.991），脂肪面積割合（r＝0.927）およびあらさ指数（r＝0.861）の相関係数は有意に高い正の値を示した（P＜0.01）．細かさ指数では低い相関係数（r＝0.329，P＜0.05）が算出された．X線CT法は，非破壊的に脂肪交雑の面積割合やあらさをある程度，評価することが可能であった．
Palavras-chave: Computed tomography; Image analysis; Japanese Black.
Ano: 2014
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4081

DIAGNOSTIC APPLICATION OF MULTIROW COMPUTED TOMOGRAPHY OF THE HIP JOINT OF JAPANESE QUAILS (COTURNIX JAPONICA)
Provedor de dados: 89
Autores: Paśko,S; Bartyzel,BJ; Dzierzęcka,M; Murawska,D; Szlufik,K; Bakoń,L; Gruszczyńska,J; Grzegrzółka,B; Nowicki,M.
ABSTRACT The morphological assessment of selected parts of the hindlimb of Japanese quails (Temminck &amp; Schlegel, 1849), with particular emphasis on hip joint structures, was performed, using a 128-row scanner (GE Optima Aquilion, Toshiba, Japan). Eight dead 3-month-old Japanese quails were evaluated. During intravital examination of those birds, no hindlimb abnormalities or locomotion disorders were detected. Bird body, which hip joints and other structures of hindlimbs were studied, was examined in posterioranterior position. The following hip joint structures, on both sides, were assessed in this study: hip joint gap width, acetabulum width, femoral head diameter, and femoral shaft width. The applied imaging method allowed accurate assessment of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Hip joint; Japanese quail.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300501

X-ray microtomography in comparison to radiographic analysis of mechanically damaged maize seeds and its effect on seed germination
Provedor de dados: 1
Autores: Gomes Junior, Francisco Guilhien; Cícero, Silvio Moure; Vaz, Carlos Manoel Pedro; Lasso, Paulo Renato Orlandi.
Among the most relevant aspects of seed production, mechanical damage may affect seed germination and reduce health and vigor. This study introduces a noninvasive high-resolution imaging procedure for evaluating the mechanical damage to maize seeds and the effects on seed germination. Seeds with different levels of mechanical damage were evaluated using a benchtop micro-computed tomography system (micro-CT) and digital X-ray equipment. The two-dimensional transaxial, coronal and sagittal micro-CT sections were used to inspect the seed anatomy and the mechanical injuries in the internal seed tissue. Germination tests were performed using paper towel rolls (25°C for 7 days) in which the seedling length was evaluated on a daily basis, and the seedling dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Seed internal morphology; 3D X-ray imaging; Computed tomography.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42608

X-ray microtomography in comparison to radiographic analysis of mechanically damaged maize seeds and its effect on seed germination
Provedor de dados: 1
Autores: Gomes Junior, Francisco Guilhien; Cícero, Silvio Moure; Vaz, Carlos Manoel Pedro; Lasso, Paulo Renato Orlandi.
Among the most relevant aspects of seed production, mechanical damage may affect seed germination and reduce health and vigor. This study introduces a noninvasive high-resolution imaging procedure for evaluating the mechanical damage to maize seeds and the effects on seed germination. Seeds with different levels of mechanical damage were evaluated using a benchtop micro-computed tomography system (micro-CT) and digital X-ray equipment. The two-dimensional transaxial, coronal and sagittal micro-CT sections were used to inspect the seed anatomy and the mechanical injuries in the internal seed tissue. Germination tests were performed using paper towel rolls (25°C for 7 days) in which the seedling length was evaluated on a daily basis, and the seedling dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Seed internal morphology; 3D X-ray imaging; Computed tomography.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42608

Accuracy of linear measurements performed with two imaging software in cone-beam computed tomography scans of dry human mandibles
Provedor de dados: 42
Autores: SILVA,ALESSANDRO A.L.S.; FRANCO,ADEMIR; FERNANDES,ÂNGELA; COSTA,CLAUDIO; BARBOSA,JORGE S.; WESTPHALEN,FERNANDO H.
ABSTRACT The present study aimed to assess the accuracy of linear measurements performed with two software packages in multislice (MSCT) and cone beam (CBCT) computed tomography (CT) images. The sample consisted of 10 human mandibles marked standardly 8 times with metallic orthodontic wires. The mandibles underwent both MSCT and CBCT scanning and were measured linearly and digitally with two software packages, namely Studio 3.1® (Anne Solutions®, SP, Brazil) (ST) and Implant Viewer 2.817® (Anne Solutions®, SP, Brazil) (IV). The linear measurements were the mandibular height (MH) and width (MW), and the distance from the alveolar ridge to the mandibular canal (AC). To validate the measurements, the mandibles were sectioned in the marked regions and measured...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Dental implant; Morphology; Radiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602865

Choroid plexus papilloma in a Rottweiler: computed tomographic, gross morfological and histological features
Provedor de dados: 45
Autores: Pinto,A.C.B.C. Fonseca; Villamizar,L.A.; Ghirelli,C.O.; Silva,T.R.C.; Baroni,C.O.; Banon,G.P.R.; Guerra,J.M.; Amaral,C.T.; Torres,L.N.
Among the tumors affecting the choroid plexus in dogs, the papilloma ranks second place in incidence after cell carcinoma tumors. Presumptive diagnosis can be made through imaging methods, such as computed tomography and magnetic resonance images. Definitive diagnosis of plexus choroid tumor is based on histopathological findings. This report presented the tomographic features of the brain in a 6-year-old intact female Rottweiler with choroid plexus papilloma. The computed tomography showed right lateral ventricle enlargement, midline deviation and an enhanced mass into the postcontrast phase. At necropsy, a mass on the floor of the right lateral ventricle was observed, associated with important ventricle dilatation. The histopathological analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Choroid plexus; Tumor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300023

Intraventricular pneumocephalus associated with nasocephalic necrosis in a puppy: a case report
Provedor de dados: 45
Autores: Sena,J.O.; Costa,K.C.R.; Costa,P.M.; Miranda,F.G.; Silva,J.F.; Tôrres,R.C.S.
ABSTRACT Pneumocephalus is defined as the presence of air in any of the intracranial compartments. Its most frequent causes are trauma and cranial surgery. Clinical signs occur as a result of increased intracranial pressure and vary with the location and extent of the lesion. A case involving a seven-month-old female Saint Bernard, who suffered cranial trauma caused by a bite to the face at ten days of age and had presented with seizures and localized pain four months previously is reported. A computed tomography scan of the skull revealed a nasocephalic mass with low contrast enhancement, bone lysis, and hypodensity (-940 Hounsfield units) of the lateral and third ventricles, indicating intraventricular pneumocephalus. During surgery, a fragment of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Intracerebral aerocele; Pneumoventricle.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200333

Síndrome de Kartagener em um cão (Canis lupus familiaris) da raça Cocker Spaniel Inglês
Provedor de dados: 45
Autores: Souza Junior,P.; Silva,S.S.R.; Martins,M.C.
Kartagener is syndrome is a rare disorder described in dogs determined by the triad situs inversus totalis, chronic sinusitis, and bronchial disease. The clinical signs of chronic respiratory and other less common presentations (such as hydrocephalus and subfertility) are due to a concomitant ciliary dysfunction. This article describes the clinical, radiographic, and computed tomography findings and treatment in a dog affected by Kartagener is syndrome since early months of life. This is the first case report of this syndrome in a domestic dog in Brazil and the only known scientific report in the English Cocker Spaniel.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dog; Kartagener's syndrome; Situs inversus totalis; Computed tomography.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300035

Acute-on-chronic subdural cranial hematoma in a dog: case report
Provedor de dados: 45
Autores: Bonelli,M.A.; Silva,I.C.C.; Fernandes,T.H.T.; Schwarz,T.; Costa,F.S.
ABSTRACT A ten-month-old male Yorkshire terrier dog was evaluated via CT four months after traumatic brain injury. The head CT scan showed dilated ventricles associated with a peripheral crescent-shaped collection of blood near the right parietal bone with a mineralized area. The visceral layer of the hematoma was hyperattenuating on the native scan and showed moderate contrast enhancement after administration of intravenous iodinated contrast medium. No fractures were identified in the calvarium. These findings were compatible with acute-on-chronic calcified subdural hematoma, which have been described with more detail in humans. This is the first report to include the description of the imaging findings related to this condition using computed tomography...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Head trauma; Traumatic brain injury; Computed tomography.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100131

Transitional carcinoma with extensive invasion of the bony orbit in a dog
Provedor de dados: 45
Autores: Paiva,S.C.C.S.; Werner,J.; Montiani-Ferreira,F.; Froes,T.R.; Machado,M.; Olbertz,L.; Lima,L.; Langohr,I.
A 12-year-old male English Pointer was examined due to a soft-tissue swelling at the medial canthus of the right orbital region, which was causing facial deformity. The dog had epiphora, purulent nasal discharge, epistaxis, dyspnea, and progressive weight loss. An intraoral mass was observed near the right maxillary premolars. Neoplastic disease was diagnosed based on ancillary tests, which included blood work, skull and intraoral radiographs, ocular ultrasonography and computed tomography. Histopathology revealed transitional carcinoma involving the nasal and oral cavities, maxilla, bony orbit and retrobulbar space. Nasal tumors represent approximately 2% of all tumors diagnosed in this species. Transitional carcinoma is the second most common type of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Respiratory neoplasm; Orbital neoplasm; Retrobulbar mass; Computed tomography.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400012

Cranial cavity filled with cerebrospinal fluid in an otter (Lontra longicaudis) - case report
Provedor de dados: 45
Autores: Costa,L.V.L.; Bonelli,M.A.; Silva,I.C.C.; Santos,M.S.; Fernandes,T.H.T.; Schwarz,T.; Costa,F.S.
ABSTRACT Computed tomography of the head of an otter with a history of incoordination, visual deficits, and seizures was performed. Intracranial images revealed a large non-enhancing fluid attenuating cystic lesion in the left frontoparietal region communicating with the left lateral ventricle and subarachnoid space. These findings are consistent with a congenital brain cavity filled by cerebrospinal fluid, with porencephaly being the most probable diagnosis based on the clinical and tomographic findings. The authors highlight the rarity of such a cystic lesion in wild animals, with this being the first report in otters.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central nervous system; Poroencephaly; Computed tomography; Congenital disorder; Wild animals.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601861

Zygomatic arch fracture in a dog treated with Veterinary Cuttable Plate - case report
Provedor de dados: 45
Autores: Macedo,A.S.; Moens,N.M.M.
ABSTRACT The purpose of this paper is to describe a case of a right zygomatic arch fracture in a 5-year-old male Labrador Retriever diagnosed with aid of 3D Computed Tomography reconstruction. Because of the depressed fracture and interference with the eyeball, surgical repair of the right zygomatic arch fracture was performed with open reduction and stabilization with an 11-hole, 2.7mm Veterinary Cuttable Plate. Radiographs taken 60 days after surgery revealed that fracture healing occurred without complications with improved function and cosmetic appearance. Ninety days after surgery the patient was clinically discharged.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Veterinary orthopedics; Facial injury; Computed tomography; Canine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300675

Quantitative computed tomography of the renal cortex in healthy dogs and cats
Provedor de dados: 45
Autores: Oliveira,D.C.; Costa,L.A.V.S.; Silva,I.C.C.; Teixeira,M.W.; Costa,F.S.
Este estudo caracteriza a radiodensidade do córtex renal de 10 cães e 10 gatos adultos, clinicamente saudáveis, por meio de exames de tomografia computadorizada helicoidal. Em cada rim, a radiodensidade renal foi estimada pelo valor médio das três regiões de interesse na região cortical, selecionados no polo cranial, polo caudal e hilo renal. A radiodensidade média do córtex renal nos cães e nos gatos foi, respectivamente, 28,4±4,7 e 22,4±3,6 unidades Hounsfield (HU). Verificou-se que os gatos possuem córtex renal hipoatenuante quando comparado com cães, um fato que está associado à maior deposição de conteúdo lipídico nos rins felinos. A diferença na radiodensidade encontrada entre o córtex renal de cães e de gatos é importante para uma correta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Cat; Renal cortex; Computed tomography; Radiodensity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400043

Diagnostic value of computed tomography, radiography and ultrasonography in metacarpophalangeal joint disorders in horses
Provedor de dados: 45
Autores: Machado,V.M.V.; Aguiar,A.C.S.; Viana,G.F.; Crosignani,N.O.; Puoli Filho,J.N.P.
In modern society the work and athletic performance of horses has led to a very important animal production sector in which Brazil possesses the third largest horse stock. Among all equine lesions described, metacarpophalangeal (fetlock) joint lesions are considered one of the main causes of lameness. Consequently, there is a need to improve the understanding and diagnosis of these injuries. The most efficient imaging diagnostic methods for the fetlock region are computed tomography, radiography and ultrasound. Imaging studies of the anatomical structures involving this joint are extremely important to obtain a more precise diagnose. The present study was performed in order to evaluate the capacity of different imaging diagnostic modalities to detect a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Radiography; Ultrasonography; Metacarpophalangeal joint; Horses.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100066

Quantitative computed tomography of the liver in dogs submitted to prednisone therapy
Provedor de dados: 45
Autores: Costa,L.A.V.S.; Oliveira,D.C.; Lopes,B.F.; Lanis,A.B.; Teixeira,M.W.; Costa,F.S.
The aim of this study is to evaluate the possible alterations in radiodensity of the hepatic parenchyma and spleen resulting from the corticotherapy with prednisone, correlating these findings with serum biochemical hepatic transaminase activity. A clinical trial was performed on eight healthy dogs with the intent of evaluating possible hepatic alterations after prednisone therapy using quantitative computed tomography. All animals received prednisone orally at a dose of 2mg/kg of weight for 30 days. The radiodensity of the liver and spleen was determined before and after the period that the medication was administered. An increase in the radiodensity of the hepatic parenchyma between the initial and final experimental stages was observed. In the present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Glycogenosis; Radiodensity; Glucocorticoid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400020

Varicella pneumonia in immunocompetent adults: report of two cases, with emphasis on high-resolution computed tomography findings
Provedor de dados: 55
Autores: Gasparetto,Emerson L.; Warszawiak,Danny; Tazoniero,Priscilla; Escuissato,Dante L.; Marchiori,Edson.
We report two cases of varicella pneumonia in immunocompetent patients, with emphasis on high-resolution computer tomography manifestations. The predominant findings consisted of multiple bilateral nodules, ranging from 1-10 mm in diameter, with or without a surrounding halo of ground-glass attenuation. Other findings include ground-glass opacities, focal areas of consolidation and small pleural effusions.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Lung diseases; Lung infection; Computed tomography; High-resolution computed tomography.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000300010

Computed tomography findings of hepatic veno-occlusive disease caused by Sedum aizoon with histopathological correlation
Provedor de dados: 56
Autores: Shao,H.; Chen,H. Z.; Zhu,J. S.; Ruan,B.; Zhang,Z. Q.; Lin,X.; Gan,M. F.
This study investigated the value of computed tomography (CT) in the diagnosis and treatment of hepatic veno-occlusive disease (HVOD) caused by Sedum aizoon (SA). The clinical manifestations, treatment results, imaging findings, and histological findings of the liver were analyzed in 39 patients with HVOD caused by SA. Hepatomegaly, liver dysfunction, abdominal effusion, and geographic density changes on liver CT scans were found in all 39 patients. The pathological findings of histological liver examination included swelling and point-like necrosis of liver cells, significant expansion and congestion of the sinuses, endothelial swelling, and wall thickening with incomplete lumen occlusion of small liver vessels. CT geographic density changes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatic veno-occlusive disease; Sedum aizoon; Drug-induced liver disease; Computed tomography.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001201145

Radiography, computed tomography and magnetic resonance imaging at 0.5 Tesla of mechanically inducedosteoarthritis in rabbit knees
Provedor de dados: 56
Autores: Torelli,S.R.; Rahal,S.C.; Volpi,R.S.; Yamashita,S.; Mamprim,M.J.; Crocci,A.J.
In the present experimental study we assessed induced osteoarthritis data in rabbits, compared three diagnostic methods, i.e., radiography (XR), computed tomography (CT) and magnetic resonance imaging (MRI), and correlated the imaging findings with those obtained by macroscopic evaluation. Ten young female rabbits of the Norfolk breed were used. Seven rabbits had the right knee immobilized in extension for a period of 12 weeks (immobilized group), and three others did not have a limb immobilized and were maintained under the same conditions (control group). Alterations observed by XR, CT and MRI after the period of immobilization were osteophytes, osteochondral lesions, increase and decrease of joint space, all of them present both in the immobilized and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoarthritis; Rabbit knee osteoarthritis; Imaging diagnosis; Knee immobilization; Radiography; Computed tomography; Magnetic resonance imaging.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400006

Texture analysis of computed tomography images of acute ischemic stroke patients
Provedor de dados: 56
Autores: Oliveira,M.S.; Fernandes,P.T.; Avelar,W.M.; Santos,S.L.M.; Castellano,G.; Li,L.M.
Computed tomography (CT) images are routinely used to assess ischemic brain stroke in the acute phase. They can provide important clues about whether to treat the patient by thrombolysis with tissue plasminogen activator. However, in the acute phase, the lesions may be difficult to detect in the images using standard visual analysis. The objective of the present study was to determine if texture analysis techniques applied to CT images of stroke patients could differentiate between normal tissue and affected areas that usually go unperceived under visual analysis. We performed a pilot study in which texture analysis, based on the gray level co-occurrence matrix, was applied to the CT brain images of 5 patients and of 5 control subjects and the results were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Texture analysis; Computed tomography; Thrombolysis; Discriminant analysis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001100012

Establishment of patient-derived tumor xenograft (PDTX) models using samples from CT-guided percutaneous biopsy
Provedor de dados: 56
Autores: Zhuang,Y.-P.; Zhu,Y.-P.; Wang,H.-Y.; Sun,L.; Zhang,J.; Hao,Y.-P.; Wang,L.
This study aimed to investigate the feasibility of the establishment of a human cancer xenograft model using samples from computed tomography (CT)-guided percutaneous biopsy. Fresh tumor tissues obtained from 10 cancer patients by CT-guided percutaneous biopsy were subcutaneously inoculated into NOD-Prkdcem26Il2rgem26Nju (NCG) mice to establish human patient-derived tumor xenograft (PDTX) models. The formation of first and second generation xenografts was observed, and tumor volume was recorded over time. Tumor tissue consistency between the PDTX model and primary tumors in patients was compared using H&amp;E staining and immunohistochemistry. Pharmacodynamic tests of clinically used chemotherapeutic drugs were conducted on second generation xenografts,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cancer; Patient-derived tumor xenografts (PDTX); Computed tomography; X-ray; Percutaneous biopsy; Mouse models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600705

Is a contrast study really necessary prior to ureteroscopy?
Provedor de dados: 56
Autores: Bayrak,O.; Demirbas,A.; Doluoglu,O.G.; Karakan,T.; Resorlu,B.; Kardas,S.; Tepeler,A.; Tangal,S.; Adanur,S.; Celik,O.
This study aimed to evaluate the effect of preoperative imaging techniques on the success and complication rates of ureteroscopy. We performed a retrospective analysis of 736 patients (455 males and 281 females), with a mean age of 45.5±15.2 years (range, 1-88 years), who underwent rigid ureteroscopic procedures for removal of ureteral stones. Patients were divided into 4 groups according to the type of imaging modality used: group I, intravenous urography (n=116); group II, computed tomography (n=381); group III, computed tomography and intravenous urography (n=91), and group IV, ultrasonography and abdominal plain film (n=148). Patients’ demographics, stone size and location, prior shock wave lithotripsy, lithotripsy technique, operation time, success...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Imaging; Intravenous urography; Stone; Ureteroscopy.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100703

Computed tomography assessment of lung structure in patients undergoing cardiac surgery with cardiopulmonary bypass
Provedor de dados: 56
Autores: Rodrigues,R.R.; Sawada,A.Y.; Rouby,J.-J.; Fukuda,M.J.; Neves,F.H.; Carmona,M.J.; Pelosi,P.; Auler,J.O.; Malbouisson,L.M.S.
Hypoxemia is a frequent complication after coronary artery bypass graft (CABG) with cardiopulmonary bypass (CPB), usually attributed to atelectasis. Using computed tomography (CT), we investigated postoperative pulmonary alterations and their impact on blood oxygenation. Eighteen non-hypoxemic patients (15 men and 3 women) with normal cardiac function scheduled for CABG under CPB were studied. Hemodynamic measurements and blood samples were obtained before surgery, after intubation, after CPB, at admission to the intensive care unit, and 12, 24, and 48 h after surgery. Pre- and postoperative volumetric thoracic CT scans were acquired under apnea conditions after a spontaneous expiration. Data were analyzed by the paired Student t-test and one-way repeated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypoxemia; Computed tomography; Coronary artery bypass graft; Cardiopulmonary bypass.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000600014

Facial trauma in a dog: advantages of the use of computed tomography on diagnostic of caudal fractures of mandible
Provedor de dados: 65
Autores: Carvalho,Vanessa Graciela Gomes; Pinto,Ana Carolina Fonseca; Gioso,Marco Antônio; Correa,Herbert Lima; Cavalcanti,Marcelo Gusmão Paraíso.
A multiple mandible fracture was diagnosed in a mixed breed dog. After clinical examination, extra-oral radiographs were used to evaluate the trauma but, a complete visualization of the fractures extension was difficult due to the great of structures of cranium. Then, the computed tomography was accomplished to help and to find all osseous tissues fractured, their exact location, existent fragments and their positions; being superior to the radiograph exam in the accurate diagnosis realized.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Facial; Trauma; Dog; Mandible; Fracture.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000600046