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Veterinary Radiology & Ultrasound

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https://www.readbyqxmd.com/read/28929544/computed-tomographic-appearance-of-canine-tonsillar-neoplasia-14-cases
#1
Florence Thierry, Maurizio Longo, Evi Pecceu, Davide D Zani, Tobias Schwarz
The palatine tonsil is an uncommon site of oral canine neoplasia. For affected tonsils, squamous cell carcinoma is the most frequent type of neoplasia, followed by melanoma and lymphoma. Computed tomography (CT) is increasingly used for investigation of canine oropharyngeal pathology; however, limited information is available on the CT appearance of tonsillar neoplasms. Objectives of this retrospective descriptive case series were to characterize the CT features of canine tonsillar neoplasia and determine whether specific CT features differentiate nonneoplastic from neoplastic tonsils...
September 19, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28929541/abstracts
#2
(no author information available yet)
No abstract text is available yet for this article.
September 19, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28925085/-18-f-fdg-pet-ct-as-adjunctive-diagnostic-modalities-in-canine-fever-of-unknown-origin
#3
Megan Grobman, Leah Cohn, Stephanie Knapp, Jeffrey N Bryan, Carol Reinero
Fever of unknown origin (FUO) is a persistent or recurrent fever for which the underlying source has not been identified despite diagnostic investigation. In people, (18) F-fluoro-2-deoxyglucose positron emission tomography ((18) F-FDG-PET) alone or in combination with computed tomography (CT) is often beneficial in detecting the source of fever when other diagnostics have failed. Veterinary reports describing use of these modalities in animals with fever of unknown origin are currently lacking. Aims of this retrospective case series were to describe (18) F-FDG-PET or (18) F-FDG-PET/CT findings in a group of dogs with fever of unknown origin...
September 18, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28891234/retrospective-analysis-of-nonradiation-complications-in-dogs-undergoing-radiation-therapy
#4
John Farrelly, Qiuhu Shi
Dogs receiving radiation can develop complications unrelated to the radiation treatment. No study to date has described these complications in clinical patients undergoing multiple radiation therapy treatments. The purpose of this retrospective case-control study was to characterize the incidence and type of complications that occur in these dogs. A secondary goal was to evaluate whether patient and treatment characteristics could be identified to predict the risk of these complications. Medical records of 268 dogs receiving at least one radiation treatment at a single institution, between September, 2004 and June, 2007 were reviewed...
September 10, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28891169/computed-tomographic-findings-in-three-dogs-naturally-infected-with-crenosoma-vulpis
#5
Jeremy R Mortier, Caroline J Fina, Elsa Edery, Crystal L White, Marc P Dhumeaux
Crenosoma vulpis is a nematode lungworm found in wild and domestic canids in some parts of North America and Europe. Reported radiographic findings are nonspecific and consist of a combination of bronchial and interstitial changes of variable severity. This retrospective, case series study aimed to describe thoracic computed tomographic (CT) findings for a group of dogs with confirmed crenosomosis. Selection criteria were presentation with a chronic cough during the period of January 2016 to February 2017, evaluation by thoracic CT, and final diagnosis of C...
September 10, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28879674/comparisons-between-elastographic-stiffness-scores-for-benign-versus-malignant-lymph-nodes-in-dogs-and-cats
#6
Gabriela S Seiler, Emily Griffith
Lymph node evaluation is an important component of oncology staging in dogs and cats, however diagnosis of malignancy currently requires cytology or histopathology. Elastography is an ultrasound technique that allows estimation of tissue stiffness. In people, it has been shown to increase the sensitivity of sonography in detection of metastatic lymph nodes. The objective of this prospective, cross-sectional study was to determine if elastographic stiffness differs for malignant versus benign canine and feline lymph nodes that were considered abnormal in gray-scale ultrasound imaging...
September 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28879657/an-exploratory-investigation-of-echocardiographic-parameters-and-the-effects-of-posture-on-cardiac-structure-and-function-in-the-livingstone-s-fruit-bat-pteropus-livingstonii
#7
Aimee L Drane, Robert Shave, Andrew Routh, Alberto Barbon
There is growing evidence that dilated cardiomyopathy may be a major cause of death in captive Livingstone's fruit bats (Pteropus livingstonii). Therefore, the primary aim of this prospective, exploratory study was to examine whether a systematic cardiac ultrasound protocol is feasible in this critically endangered species and to report basic measures of cardiac structure and function from a cohort of apparently healthy bats. A secondary aim was to test the effect posture (dorsal recumbency vs. roosting) has upon cardiac function in this species...
September 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28868753/a-spaghetti-sign-in-feline-abdominal-radiographs-predicts-spleno-systemic-collateral-circulation
#8
Swan Specchi, Ioannis Panopoulοs, Anna M Adrian, Giliola Spattini, Simona Morabito, Matthew Paek
A well-defined, tortuous, and tubular soft tissue opaque structure has been observed within the left mid abdominal cavity in digital radiographs of some cats. Authors hypothesized that this radiographic "spaghetti sign" is a predictor for spleno-systemic collateral circulation. The purpose of this multicenter, retrospective, descriptive study was to further characterize radiographic "spaghetti signs" in a group of cats and compare these signs with results of ultrasonography or computed tomography (CT). A multiinstitutional database was reviewed for radiographic reports describing the presence of a tubular tortuous structure within the left abdominal cavity of feline patients...
September 3, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28868643/comparison-of-radiography-and-computed-tomography-to-evaluate-fractures-of-the-canine-tarsus
#9
Danielle Butler, Sarah Nemanic, Jennifer J Warnock
Detection and accurate classification of traumatic tarsal fractures are important for identifying cases requiring surgical intervention. The aim of this prospective, experimental, methods comparison study was to directly compare the accuracy, sensitivity, and specificity of tarsal computed tomography (CT), ten-view and two-view digital radiographs for detecting traumatic fractures of the canine tarsus. The working hypothesis was that tarsal fractures would be detected with higher accuracy, sensitivity, and specificity using CT imaging compared to radiography, and a ten-view would be superior to a two-view radiographic study...
September 3, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28857335/comparison-of-a-computed-tomographic-pulmonary-trunk-to-aorta-diameter-ratio-with-echocardiographic-indices-of-pulmonary-hypertension-in-dogs
#10
James Sutherland-Smith, Elyshia J Hankin, Suzanne M Cunningham, Amy F Sato, Bruce A Barton
There are limited criteria for the detection of pulmonary hypertension in dogs undergoing computed tomography (CT) for pulmonary disease. This retrospective analytical exploratory study compared a CT pulmonary trunk to aorta ratio with echocardiographic estimates of pulmonary hypertension. Dogs having both a contrast thoracic CT and echocardiogram were selected and maximal pulmonary trunk and descending aorta diameters were measured by two observers on a single transverse CT image. Computed tomographic diameter ratios were compared with the echocardiographic parameters of tricuspid regurgitation gradient, right ventricular acceleration time-to-ejection time ratio, pulmonary insufficiency gradient, and pulmonary artery to aorta diameter...
August 30, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28791756/pulmonary-vasculature-in-dogs-assessed-by-three-dimensional-fractal-analysis-and-chemometrics
#11
Anna V Müller, Clara B Marschner, Annemarie T Kristensen, Bo Wiinberg, Amy F Sato, Jose M A Rubio, Fintan J McEvoy
Fractal analysis of canine pulmonary vessels could allow quantification of their space-filling properties. Aims of this prospective, analytical, cross-sectional study were to describe methods for reconstructing three dimensional pulmonary arterial vascular trees from computed tomographic pulmonary angiogram, applying fractal analyses of these vascular trees in dogs with and without diseases that are known to predispose to thromboembolism, and testing the hypothesis that diseased dogs would have a different fractal dimension than healthy dogs...
August 8, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28782274/radiographic-ultrasonographic-and-computed-tomographic-characteristics-of-an-accessory-liver-lobe-in-a-cat
#12
Marta Soler, Juana D Carrillo, Eliseo Belda, Antonio Buendía, Amalia Agut
A 5-year-old male Norwegian Forest cat presented with increased hepatic serum biochemical parameters. Abdominal radiography showed an oval cranioventral mass and ultrasound revealed a mobile mass attached to one hepatic lobe. Computed tomography (CT) confirmed that the mass was attached to the right medial liver lobe. Differential diagnoses were an accessory liver lobe, benign neoplasia, and focal nodular hyperplasia. The mass was removed and histopathology confirmed the mass to be normal liver tissue. Accessory liver lobe should be included in the differential diagnosis of a mobile cranial abdominal mass with a similar ultrasonographic or CT appearance to the liver...
August 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28758278/clinical-and-imaging-findings-treatments-and-outcomes-in-27-dogs-with-imaging-diagnosed-trigeminal-nerve-sheath-tumors-a-multi-center-study
#13
Katie E Swift, Stephanie McGrath, Michael W Nolan, Martin Young, Michael Reese, Sangeeta Rao, Elissa Randall, Del Leary, Susan LaRue
The clinical behavior of canine trigeminal nerve sheath tumors and benefits of previously reported treatments are incompletely defined. Aims of this retrospective, multicenter, observational study were to describe clinical signs, tumor localization characteristics, treatments, and clinical outcomes in a group of dogs with this neoplasm. Databases at four hospitals were reviewed for dogs with a trigeminal nerve sheath tumor diagnosis, magnetic resonance imaging (MRI) studies, and presentation between 2004 and 2014...
July 31, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28758345/does-the-computed-tomographic-appearance-of-the-lung-differ-between-young-and-old-dogs
#14
Natasha L Hornby, Christopher R Lamb
In computed tomographic (CT) images of humans, decreased lung attenuation, bronchial dilation, and/or thickening, air trapping, cysts, and thickened interlobular septa have been associated with increasing age. To determine if there are differences in the CT appearance of the lungs of young and old dogs that could affect interpretation of diagnostic studies, pulmonary CT images of dogs with conditions unrelated to the thorax were reviewed retrospectively in a case-control study. Computed tomography studies of 42 young dogs (range 0...
July 30, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28758273/assessment-of-computed-tomography-derived-cricoid-cartilage-and-tracheal-dimensions-to-evaluate-degree-of-cricoid-narrowing-in-brachycephalic-dogs
#15
Lynda Rutherford, Lee Beever, Mieghan Bruce, Gert Ter Haar
The aims of this observational, analytical, retrospective study were to (i) obtain computed tomographic (CT) cricoid dimensions (height, width, and transverse-sectional area), (ii) compare the cricoid dimensions between brachycephalic and mesaticephalic breeds, and (iii) compare cricoid cartilage dimensions between dogs without and affected with brachycephalic airway syndrome. The study is important to help to further evaluate and understand the anatomical components of brachycephalic airway syndrome. Measurements were performed in 147 brachycephalic and 59 mesaticephalic dogs...
July 30, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28752536/multimodality-imaging-of-primary-ureteral-hemangiosarcoma-with-thoracic-metastasis-in-an-adult-dog
#16
Daniele Troiano, Micaela Zarelli
A 12-year-old spayed female standard Poodle was presented for investigation of severe hematuria. Abdominal ultrasound and thoracic and abdominal computed tomography identified severe hydronephrosis due to an obstructive ureteral mass with no evidence of metastasis. Histological examination after nephrectomy and ureterectomy confirmed an obstructive ureteral hemangiosarcoma. Forty days after surgery, the dog was presented with severe dyspnea. Survey radiographs of the thorax revealed a severe diffuse nodular interstitial pattern...
July 27, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28752521/effect-of-catheter-size-and-injection-rate-of-contrast-agent-on-enhancement-and-image-quality-for-triple-phase-helical-computed-tomography-of-the-liver-in-small-dogs
#17
Sang-Kwon Lee, Dahae Lee, Dongeun Kim, Ahyoung Cha, Jihye Choi
Rapid contrast injection is recommended for triple-phase helical computed tomography (CT) of the liver. However, a large-gauge catheter is needed for faster contrast injection and this is not practical for small breed dogs or cats. The purpose of this crossover group study was to evaluate applicability of a lower injection rate with a small-gauge (G) catheter for triple-phase hepatic CT in small dogs. Triple-phase CT images were acquired for six beagle dogs using three protocols: an injection rate of 1.5 ml/s with a 24 G catheter, 3...
July 27, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28726346/imaging-characteristics-and-treatment-of-a-penetrating-brain-injury-caused-by-an-oropharyngeal-foreign-body-in-a-dog
#18
Jennifer McKenzie, Megan Cooper Murphy, Cameron Broome, Hamaseh Tayari, Rodrigo Gutierrez-Quintana
A 4-year-old Border collie was presented with one episode of collapse, altered mentation, and a suspected pharyngeal stick injury. Magnetic resonance imaging (MRI) and computed tomography showed a linear foreign body penetrating the right oropharynx, through the foramen ovale and the brain parenchyma. The foreign body was surgically removed and medical treatment initiated. Complete resolution of clinical signs was noted at recheck 8 weeks later. Repeat MRI showed chronic secondary changes in the brain parenchyma...
July 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28726244/computed-tomographic-morphometry-of-tympanic-bulla-shape-and-position-in-brachycephalic-and-mesaticephalic-dog-breeds
#19
Ben Mielke, Richard Lam, Gert Ter Haar
Anatomic variations in skull morphology have been previously described for brachycephalic dogs; however there is little published information on interbreed variations in tympanic bulla morphology. This retrospective observational study aimed to (1) provide detailed descriptions of the computed tomographic (CT) morphology of tympanic bullae in a sample of dogs representing four brachycephalic breeds (Pugs, French Bulldogs, English Bulldog, and Cavalier King Charles Spaniels) versus two mesaticephalic breeds (Labrador retrievers and Jack Russell Terriers); and (2) test associations between tympanic bulla morphology and presence of middle ear effusion...
July 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28714265/can-malignant-and-inflammatory-pleural-effusions-in-dogs-be-distinguished-using-computed-tomography
#20
Thom C Watton, Ana Lara-Garcia, Christopher R Lamb
Computed tomography (CT) is the primary imaging modality used to investigate human patients with suspected malignant or inflammatory pleural effusion, but there is a lack of information about the clinical use of this test in dogs. To identify CT signs that could be used to distinguish pleural malignant neoplasia from pleuritis, a retrospective case-control study was done based on dogs that had pleural effusion, pre- and postcontrast thoracic CT images, and cytological or histopathological diagnosis of malignant or inflammatory pleural effusion...
July 16, 2017: Veterinary Radiology & Ultrasound
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