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Registros recuperados: 37
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Accuracy of linear measurements performed with two imaging software in cone-beam computed tomography scans of dry human mandibles Anais da ABC (AABC)
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
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Acute-on-chronic subdural cranial hematoma in a dog: case report Arq. Bras. Med. Vet. Zootec.
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
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Age Estimation from Ossification of the Medial Clavicular Epiphysis by Computed Tomography International Journal of Morphology
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
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Bilateral Bifid Condylar Process International Journal of Morphology
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
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Bilateral Bifid Mandibular Condyle: A Case Report International Journal of Morphology
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
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Choroid plexus papilloma in a Rottweiler: computed tomographic, gross morfological and histological features Arq. Bras. Med. Vet. Zootec.
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
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Clinico-Radiographic Examination of Odontogenic Myxoma with Displacement of Unerupted Upper Third Molar: Review of the Literature International Journal of Morphology
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
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Computed tomography and magnetic resonance imaging findings for the initial stage of equine temporohyoid osteoarthropathy in a thoroughbred foal OAK
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
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Computed tomography assessment of lung structure in patients undergoing cardiac surgery with cardiopulmonary bypass BJMBR
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
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Computed tomography findings of hepatic veno-occlusive disease caused by Sedum aizoon with histopathological correlation BJMBR
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
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Cone-beam Computed Tomography Analysis of the Frontal Sinus in Forensic Investigation International Journal of Morphology
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
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Cranial cavity filled with cerebrospinal fluid in an otter (Lontra longicaudis) - case report Arq. Bras. Med. Vet. Zootec.
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
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DIAGNOSTIC APPLICATION OF MULTIROW COMPUTED TOMOGRAPHY OF THE HIP JOINT OF JAPANESE QUAILS (COTURNIX JAPONICA) Rev. Bras. Ciênc. Avic.
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 & 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
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Diagnostic value of computed tomography, radiography and ultrasonography in metacarpophalangeal joint disorders in horses Arq. Bras. Med. Vet. Zootec.
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
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Easy and Unbiased Determination of the Maxillary Sinus Volume International Journal of Morphology
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
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Establishment of patient-derived tumor xenograft (PDTX) models using samples from CT-guided percutaneous biopsy BJMBR
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&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
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Facial trauma in a dog: advantages of the use of computed tomography on diagnostic of caudal fractures of mandible Ciência Rural
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
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Intraventricular pneumocephalus associated with nasocephalic necrosis in a puppy: a case report Arq. Bras. Med. Vet. Zootec.
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
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Is a contrast study really necessary prior to ureteroscopy? BJMBR
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
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Marbling evaluation by using X-ray computed tomography on beef primal cuts OAK
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
Registros recuperados: 37
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