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Veterinary Radiology & Ultrasound

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https://www.readbyqxmd.com/read/29134728/recent-advances-in-veterinary-radiation-oncology
#1
EDITORIAL
Michael S Kent, Michelle M Turek, John Farrelly
No abstract text is available yet for this article.
November 13, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29110365/magnetic-resonance-imaging-features-of-canine-gliomatosis-cerebri
#2
Daniela Schweizer-Gorgas, Diana Henke, Anna Oevermann, Johann Lang, Marc Vandevelde, Frank Steffen
A retrospective, case series study was undertaken to identify magnetic resonance imaging (MRI) characteristics of gliomatosis cerebri in dogs. Fourteen dogs were included by review of histopathological records and contemporaneous MRI. On MRI, all lesions presented as ill-defined, intraaxial lesions within the left and right forebrain hemispheres with involvement of white and gray matter. Lesions presented as hyperintense areas on T2-weighted and FLAIR sequences and as hypointense or isointense areas on T1-weighted images, with mild parenchymal contrast enhancement in three dogs...
November 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29094513/accuracy-of-3-tesla-magnetic-resonance-imaging-using-detection-of-fiber-loss-and-a-visual-analog-scale-for-diagnosing-partial-and-complete-cranial-cruciate-ligament-ruptures-in-dogs
#3
Constance G Fazio, Peter Muir, Susan L Schaefer, Kenneth R Waller
Canine cranial cruciate ligament rupture is often bilateral and asymmetrical, ranging from partial to complete rupture. The purpose of our diagnostic accuracy study was to assess the accuracy of 3 Tesla magnetic resonance imaging (MRI) detection of fiber loss and use of a visual analog scale in the diagnosis of complete versus partial cranial cruciate ligament rupture in 28 clinical dogs with unilateral complete rupture and contralateral partial rupture. Three Tesla MRI was performed on 56 stifles using sagittal sequences (T2-weighted fast spin echo with fat saturation, proton density fast spin echo, and T2-weighted 3D fast spin echo CUBE)...
November 1, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29094440/prospective-evaluation-of-abdominal-ultrasonographic-findings-in-35-dogs-with-leptospirosis
#4
Juliette Sonet, Anthony Barthélemy, Isabelle Goy-Thollot, Céline Pouzot-Nevoret
Despite the emergence of new serovars, a detailed and current abdominal ultrasonographic description of dogs with leptospirosis is lacking. The purpose of this prospective, observational, single cohort study was to illustrate abdominal ultrasonographic findings in 35 dogs with confirmed leptospirosis. At least one ultrasonographic abnormality was seen in all of the dogs. Ultrasound renal abnormalities were found in all the dogs and included increased renal cortical echogenicity (100%), increased medullary echogenicity (86%), reduced corticomedullary definition (80%), cortical thickening (74%), renomegaly (60%), pelvic dilation (31%), and medullary band (14%)...
November 1, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29044898/use-of-computed-tomography-and-minimum-intensity-projection-in-the-detection-of-lobar-pneumonia-mimicking-lung-lobe-torsion-in-a-dog
#5
Sang-Kwon Lee, Kyoung-Oh Cho, Mia Madel Alfajaro, Juhwan Lee, Dohyeon Yu, Jihye Choi
A 10-year-old female spayed Dachshund was referred with progressive coughing for 1 month. The dog was tentatively diagnosed with right middle lung torsion based on pleural effusion, vesicular emphysema, abruptly ending bronchus in consolidated right middle lung, and no contrast enhancement of the affected lobe on radiography and computed tomography (CT). There was no evidence of torsion upon thoracotomy, and histological examination confirmed lobar pneumonia. The CT images were reevaluated using minimum intensity projection and revealed normal bronchial courses...
October 16, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29024279/computed-tomographic-lymphography-as-a-complementary-technique-for-lymph-node-staging-in-dogs-with-malignant-tumors-of-various-sites
#6
Federica Rossi, Maximilian Körner, José Suárez, Gregorio Carozzi, Valeria S Meier, Malgorzata Roos, Carla Rohrer Bley
Locoregional lymph nodes are routinely examined in order to define the spatial extent of neoplastic disease. As draining patterns of certain tumor types can be divergent from expected anatomical distribution, it is critical to sample the lymph nodes truly representing the draining area. The aim of this bicenter prospective pilot study was to describe the technique of computed tomographic (CT)-lymphography for primary draining lymph node mapping in tumor staging in dogs. Forty-five dogs with macro- or microscopic tumors in specified localizations were evaluated...
October 11, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29024163/ultrasonographic-measurement-of-caudal-vena-cava-to-aorta-ratios-for-determination-of-volume-depletion-in-normal-beagle-dogs
#7
Jungmin Kwak, Hakyoung Yoon, Jaehwan Kim, Minjoo Kim, Kidong Eom
A noninvasive method for quantifying hydration status would be helpful for clinical management and for research applications in dogs. This prospective, experimental, pilot study aimed to assess the feasibility of ultrasonographic measurement of the caudal vena cava to aorta ratio as a method for quantifying volume depletion in dogs. In 12 normal beagle dogs, furosemide was administered intravenously at a dose of 1 mg/kg, every 2 h, for 8 h, to induce consecutive volume depletion. Every 30 min after administration, ultrasonographic images of the caudal vena cava and aorta, and physical and biological parameters related to dehydration were acquired...
October 10, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28994206/the-computed-tomographic-tree-in-bud-pattern-characterization-and-comparison-with-radiographic-and-clinical-findings-in-36-cats
#8
Harriet Hahn, Swan Specchi, Isabelle Masseau, Carol Reinero, Ghita Benchekroun, Jaime Rechy, Gabriela Seiler, Pascaline Pey
In humans, a CT "tree-in-bud" pattern has been described as a characteristic of centrilobular bronchiolar dilation, with bronchiolar plugging by mucus, pus, or fluid. Aims of this retrospective, descriptive, multi-center study were to characterize the CT appearance of a "tree-in-bud" pattern in a group of cats, and compare this pattern with radiographic and clinical findings. Databases from four hospitals were searched during the period of January 2012 to September 2015 and cats with thoracic radiographs, thoracic CT scans and CT reports describing findings consistent with a "tree-in-bud" pattern were included...
October 9, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28994151/negative-hepatic-computed-tomographic-attenuation-pattern-in-a-dog-with-vacuolar-hepatopathy-and-hepatic-fat-accumulation-secondary-to-cushing-s-syndrome
#9
Andrea Carloni, Michaela Paninarova, Damiano Cavina, Mariarita Romanucci, Leonardo Della Salda, Simone Teodori, Massimo Vignoli
This report describes an unusual computed tomographic (CT) hepatic pattern, characterized by negative attenuation values (from -19.59 to -28.85 Hounsfield Units, HU) in a canine patient with severe Cushing's syndrome. Attenuation values of the splenic parenchyma (63.26 HU) and abdominal fat (-118.34 HU) were within normal limits. The negative hepatic attenuation values allowed a CT diagnosis of severe hepatic fatty infiltration that was subsequently confirmed by tissue-core biopsy and histopathological examination...
October 9, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28967190/multimodality-imaging-characteristics-of-tension-pyopneumothorax-secondary-to-pulmonary-carcinoma-in-a-cat
#10
Jaehwan Kim, Hakyoung Yoon, Soyoung Kim, Kidong Eom
A 3-year-old Himalayan cat was presented with respiratory distress. Radiography showed multiple gas opacity foci, with the locations dependent on patient positioning, and severe pleural effusion with a contralateral mediastinal shift. A large volume of fluid and air was aspirated, and the fluid components were consistent with a nonseptic exudate. A pulmonary mass, pleural nodules, and an air-fluid interface with air bubbles trapped in fibrous septations were identified using thoracic ultrasonography and CT...
October 1, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28929544/computed-tomographic-appearance-of-canine-tonsillar-neoplasia-14-cases
#11
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/28925085/-18-f-fdg-pet-ct-as-adjunctive-diagnostic-modalities-in-canine-fever-of-unknown-origin
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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/29115015/dr-christina-chesvick
#20
Sukey Barnum
No abstract text is available yet for this article.
November 2017: Veterinary Radiology & Ultrasound
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