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| Registros recuperados: 37 | |
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| 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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| 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 |
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| 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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| 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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| 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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| 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 |
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| 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 |
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| 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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| 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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| 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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| 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 |
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| Registros recuperados: 37 | |
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