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Veterinary Radiology & Ultrasound

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https://www.readbyqxmd.com/read/28054404/improving-conspicuity-of-the-canine-gastrointestinal-wall-using-dual-phase-contrast-enhanced-computed-tomography-a-retrospective-cross-sectional-study
#1
Ella Fitzgerald, Richard Lam, Randi Drees
Gastrointestinal (GI) disease is a common clinical complaint in small animal patients; computed tomography (CT) examinations enable a global overview of the GI tract and associated structures. Previously, the GI wall has been reportedly identified from serosa to mucosa in 77% of standard postcontrast CT studies and wall layers seen in ultrasound have not been distinguished. Inconsistent strong contrast enhancement of the inner layer of the GI mucosal surface was noted on dual phase CT studies acquired in our institution, which increased the visibility of the GI tract and disease processes...
January 5, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28009075/assessment-of-sentinel-lymph-node-metastasis-in-canine-mammary-gland-tumors-using-computed-tomographic-indirect-lymphography
#2
Christina Soultani, Michail N Patsikas, Maria Karayannopoulou, Samuel Jakovljevic, Ioannis Chryssogonidis, Lysimachos Papazoglou, Nikolaos Papaioannou, Paraskevi Papadopoulou, Kyriaki Pavlidou, Georgia M Ilia, Dimitrios G Kaitzis, Tatiana M Ilia
In the staging process of the breast cancer, demonstrating metastasis of the sentinel lymph node (SLN) has an important prognostic value, in both humans and animals. The aim of this prospective case-control study was to determine the diagnostic value of computed tomographic indirect lymphography (CT-LG) for detecting SLN metastasis in dogs with mammary cancer. Thirty-three female dogs with tumors in the abdominal and inguinal mammary glands were prospectively selected and subjected to CT-LG, 1 and 5 min after injection of 1 ml of contrast agent (iopamidol) in the subareolar tissue of the neoplastic and the contralateral normal mammary glands...
December 23, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28005303/radiographic-appearance-of-presumed-noncardiogenic-pulmonary-edema-and-correlation-with-the-underlying-cause-in-dogs-and-cats
#3
Sarah Bouyssou, Swan Specchi, Loïc Desquilbet, Pascaline Pey
Noncardiogenic pulmonary edema is an important cause of respiratory disease in dogs and cats but few reports describe its radiographic appearance. The purpose of this retrospective case series study was to describe radiographic findings in a large cohort of dogs and cats with presumed noncardiogenic pulmonary edema and to test associations among radiographic findings versus cause of edema. Medical records were retrieved for dogs and cats with presumed noncardiogenic edema based on history, radiographic findings, and outcome...
December 22, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28000327/joint-virtual-issue-what-is-new-with-equine-imaging
#4
EDITORIAL
Mathieu Spriet
No abstract text is available yet for this article.
December 21, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27997705/magnetic-resonance-imaging-features-of-intraventricular-ependymomas-in-five-cats
#5
Antonia DeJesus, Eli B Cohen, Evelyn Galban, Jantra Ngosuwan Suran
Intraventricular ependymoma is a rare type of feline intracranial neoplasia and published information on magnetic resonance imaging (MRI) characteristics is currently lacking. The purpose of this retrospective case series study was to describe the clinical and MRI characteristics of histopathologically confirmed intraventricular ependymomas in a group of cats. Five cats met inclusion criteria. In relation to normal gray matter, ependymomas appeared hyperintense on T2W, T2W-FLAIR, PD, and DW-EPI images; isointense on ADC images; and had subtle to strong contrast enhancement...
December 20, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27992091/effects-of-x-ray-beam-angle-and-geometric-distortion-on-width-of-equine-thoracolumbar-interspinous-spaces-using-radiography-and-computed-tomography-a-cadaveric-study
#6
Julie D Djernaes, Jon V Nielsen, Lise C Berg
The widths of spaces between the thoracolumbar processi spinosi (interspinous spaces) are frequently assessed using radiography in sports horses; however effects of varying X-ray beam angles and geometric distortion have not been previously described. The aim of this prospective, observational study was to determine whether X-ray beam angle has an effect on apparent widths of interspinous spaces. Thoracolumbar spine specimens were collected from six equine cadavers and left-right lateral radiographs and sagittal and dorsal reconstructed computed tomographic (CT) images were acquired...
December 19, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27977066/single-shot-turbo-spin-echo-pulse-sequence-findings-in-dogs-with-and-without-progressive-myelomalacia
#7
Lindsey J Gilmour, Nick D Jeffery, Kristina Miles, Elizabeth Riedesel
Progressive myelomalacia is an uncommon type of ischemic, hemorrhagic spinal cord infarction. Diagnosis can be difficult, but prompt recognition is important. We hypothesized that cerebrospinal fluid signal attenuation on magnetic resonance (MR) images would be more extensive in dogs that developed progressive myelomalacia vs. control dogs. A retrospective analytic cohort study was designed. Dogs were included if they presented for acute paraplegia and loss of deep pain perception and had undergone MR imaging using both sagittal single-shot turbo spin echo (SSTSE) and standard sagittal T2-weighted fast spin echo (T2W) pulse sequences...
December 15, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27935666/comparison-of-transverse-computed-tomographic-excretory-urography-images-and-maximum-intensity-projection-images-for-diagnosing-ectopic-ureters-in-dogs
#8
Scott Secrest, Andrew Bugbee, Kenneth Waller, David A Jiménez
Computed tomographic maximum intensity projection (MIP) images have been shown to improve reader confidence in their diagnoses and to improve detection of vascular structures and pulmonary nodules. The objectives of this method comparison study were to compare transverse source computed tomographic excretory urography (CTEU) images to two, five, and 10 slab thick MIP images for diagnosing canine ectopic ureters, compare reader confidence, and evaluate interobserver agreement. Two board-certified veterinary radiologists and a board-certified small animal internist blindly reviewed transverse source CTEU and two, five, and 10 slab thick MIP images of 24 dogs enrolled in the study...
December 9, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27922211/transrectal-ultrasonography-of-equine-lumbosacral-nerves-pilot-study-in-28-healthy-warmblood-horses
#9
Pablo Espinosa, Philippe Benoit, Isabel Salazar, Jesús de la Fuente, Philippe Heiles
A noninvasive method for visualizing lumbosacral nerves would be helpful for horses with suspected lumbosacral plexopathy or injury. The aim of this prospective descriptive pilot study was to characterize the ultrasonographic appearance of the lumbosacral nerves in a sample of healthy horses, and expand on the technique for image acquisition. Horses were recruited for inclusion if they were determined to be healthy and sound based on clinical and lameness evaluation. Transrectal ultrasound images of the lumbosacral nerves (L6, S1, and S2) were obtained for both sides...
December 6, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27922210/comparison-between-thoracic-radiographic-findings-and-postmortem-diagnosis-of-thoracic-diseases-in-dyspneic-companion-rats-rattus-norvegicus
#10
Virginie Fouriez-Lablée, Claire Vergneau-Grosset, Philip H Kass, Allison L Zwingenberger
Companion rats are often presented to veterinarians for respiratory difficulties. Dyspnea in rats is most commonly due to infectious pneumonia, and thoracic neoplasia can go undiagnosed ante mortem due to a mistaken interpretation of pneumonia. In domestic carnivores, pulmonary nodular patterns have been shown to correlate with lung neoplastic diseases and infectious diseases. The main objective of this retrospective case series study was to determine whether certain radiographic criteria could be correlated with the presence of thoracic infectious disease and neoplastic disease in companion rats...
December 6, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27918152/computed-tomographic-characteristics-of-the-thyroid-glands-in-eight-hyperthyroid-cats-pre-and-postmethimazole-treatment-compared-with-seven-euthyroid-cats
#11
Jennifer L Bush, Sarah Nemanic, Jana Gordon, Gerd Bobe
Hyperthyroidism is the most common feline endocrinopathy; thyroid computed tomography (CT) may improve disease detection and methimazole dose selection. Objectives of this experimental pre-post with historical case-control study were to perform thyroid CT imaging in awake or mildly sedated hyperthyroid cats, compare thyroid gland CT appearance in euthyroid and hyperthyroid cats pre- and postmethimazole treatment, and determine whether thyroid size or attenuation correlate with methimazole dose needed for euthyroidism...
December 5, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27910172/imaging-diagnosis-imaging-and-histopathologic-characteristics-of-a-vertebral-hamartoma-in-a-cat
#12
Frances E Taylor-Brown, Christopher R Lamb, Henny Martineau, Clare Muir, Elsa Beltran
A 9-month-old domestic shorthair cat had progressive ambulatory paraparesis, proprioceptive ataxia, and thoracolumbar hyperesthesia. An extradural mass affecting the left pedicle and lamina of the second lumbar vertebra (L2) causing marked spinal cord impingement was identified in magnetic resonance (MR) images. The mass was predominantly calcified in computed tomographic (CT) images. A hemilaminectomy was performed to resect the mass. Clinical signs were greatly improved at 12-month follow-up. The histopathologic diagnosis was vascular hamartoma...
December 1, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27910171/results-of-computed-tomography-in-dogs-with-suspected-wooden-foreign-bodies
#13
Christopher R Lamb, Elizabeth H W Pope, Karla C L Lee
Detection of wooden foreign bodies in dogs can be challenging. A retrospective, cross-sectional study was done to describe computed tomographic (CT) signs associated with wooden foreign bodies, and to estimate the accuracy of CT for detection of wooden foreign bodies. Patient records and CT images were reviewed for 72 dogs that had a history of suspected stick injury and CT of the affected body part, or possible wooden foreign object reported on CT, and had surgical exploration during the same period of hospitalization...
December 1, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27896903/imaging-diagnosis-magnetic-resonance-imaging-of-a-neuronal-heterotopia-in-the-brain-of-a-cat
#14
Antonia DeJesus, Bradley J Turek, Evelyn Galban, Jantra Ngosuwan Suran
A domestic shorthair kitten was presented for evaluation and further treatment of seizures. Magnetic resonance imaging of the brain revealed a large multilobulated mass in the third ventricle extending into the right lateral ventricle with secondary obstructive hydrocephalus. The mass was homogeneously isointense to gray matter on T2W, T2-FLAIR, T2(*) W, T1W, and ADC images, and hyperintense on DW-EPI. There was no appreciable contrast enhancement. Seizures were managed medically and with subsequent ventriculoperitoneal shunt placement...
November 28, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27885739/analysis-of-factors-affecting-outcome-of-ultrasound-guided-radiofrequency-heat-ablation-for-treatment-of-primary-hyperparathyroidism-in-dogs
#15
Daniel Bucy, Rachel Pollard, Richard Nelson
Radiofrequency (RF) parathyroid ablation is a noninvasive treatment for hyperparathyroidism in dogs. There are no published data assessing factors associated with RF parathyroid ablation success or failure in order to guide patient selection and improve outcome. The purpose of this retrospective analytical study was to determine whether imaging findings, biochemical data, or concurrent diseases were associated with RF heat ablation treatment failure. For inclusion in the study, dogs must have had a clinical diagnosis of primary hyperparathyroidism, undergone cervical ultrasound and RF ablation of abnormal parathyroid tissue, and must have had at least 3 months of follow-up information available following the date of ultrasound-guided parathyroid ablation...
November 24, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27873382/use-of-a-novel-board-game-in-a-clinical-rotation-for-learning-thoracic-differential-diagnoses-in-veterinary-medical-imaging
#16
Christopher P Ober
When confronted with various findings on thoracic radiographs, fourth-year veterinary students often have difficulty generating appropriate lists of differential diagnoses. The purpose of this one-group, pretest, posttest experimental study was to determine if a game could be used as an adjunct teaching method to improve students' understanding of connections between imaging findings and differential diagnoses. A novel board game focusing on differential diagnoses in thoracic radiography was developed. One hundred fourth-year veterinary students took a brief pretest, played the board game, and took a brief posttest as a part of their respective clinical radiology rotations...
November 21, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27866381/cardiac-magnetic-resonance-imaging-of-patent-ductus-arteriosus-in-three-dogs
#17
Youngjae Lee, Jaihyun Jung, Junyong Park, Jiyoon Jeong, Seokho Jeon, Sunyoung Park, Jinhwa Chang, Ji-Houn Kang, Chulhyun Lee, Dongwoo Chang
Patent ductus arteriosus (PDA) is the most common congenital cardiovascular disorder in dogs and requires an accurate diagnosis for an appropriate treatment. Cardiac MRI (cMRI) has been reported as a method for characterization of canine thoracic vasculature. However, to the authors' knowledge, no published studies describe evaluation of canine PDA through cMRI. Three dogs were selected for this exploratory study. Electrocardiogram gating and breath-hold techniques were performed using a 3T MR scanner. Both black blood imaging and bright blood cine acquisitions were performed...
November 20, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27866380/imaging-diagnosis-ultrasound-uncommon-features-of-an-abdominal-gossypiboma-in-a-dog
#18
Arnaud Louvet, Anne-Carole Duconseille
An abdominal mass was incidentally detected in a 12-year-old, neutered female, crossed breed dog. Abdominal ultrasonographic examination showed a well-delineated, irregular, heterogeneous mass that did not generate any distal acoustic shadowing. Transcutaneous US-guided biopsy of the mass were nonconclusive but raised the possibility of neoplasia. Surgery discovered a mass embedded in the omentum and a large quantity of surgical sponges were identified in cut section. To the authors' knowledge, this represents the first published case of gossypiboma casting no characteristic distal acoustic shadowing...
November 20, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27859901/radiographic-measurements-of-hoof-balance-are-significantly-influenced-by-a-horse-s-stance
#19
Frederik E Pauwels, Chris W Rogers, Heather Wharton, Hailey Flemming, Paul F Wightman, Ron W Green
Hoof balance radiographs are commonly used as the basis for corrective farriery decision-making in horses, however there are limited published data quantifying effects of the stance of the horse or the horizontal radiographic beam angle. In this analytical study, the influence of variation of the horse's stance in the craniocaudal and lateromodial plane on hoof balance measurements as well as the influence of variation of the horizontal radiographic beam angle on dorsopalmar hoof balance measurements was examined...
November 17, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27862599/effects-of-image-plane-patient-positioning-and-foraminal-zone-on-magnetic-resonance-imaging-measurements-of-canine-lumbosacral-intervertebral-foramina
#20
Claudia Zindl, Russell L Tucker, Jelena Jovanovik, Constanza Gomez Alvarez, David Price, Noel Fitzpatrick
Degenerative lumbosacral stenosis has been suspected to have a dynamic component, especially regarding encroachment of the L7 nerve roots exiting the lumbosacral foramina. Angled cross-sectional imaging of the neuroforamina has been found improve the accuracy of the diagnosis of stenosis in humans. In this anatomic study, foraminal apertures were evaluated by MRI at the entry, middle, and exit zones of the nerve roots in 30 dogs that were clinically affected by lumbosacral disease. Standard vs. oblique planar orientation and neutral vs...
November 16, 2016: Veterinary Radiology & Ultrasound
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