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Veterinary Radiology & Ultrasound

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https://www.readbyqxmd.com/read/28337826/diagnostic-outcome-of-contrast-videofluoroscopic-swallowing-studies-in-216-dysphagic-dogs
#1
Rachel E Pollard, Stanley L Marks, Diane M Cheney, Cecily M Bonadio
Determining the anatomic and functional origin for dysphagia is critical for development of an appropriate therapeutic plan and determination of the prognosis. The purpose of this retrospective study was to report the quantitative and qualitative outcome of contrast videofluoroscopic swallowing studies in a large cohort of dysphagic dogs presenting to a tertiary veterinary care hospital. The videofluoroscopic swallowing studies were reviewed to generate values for pharyngeal constriction ratio, timing of swallowing events (maximum pharyngeal contraction, opening of upper esophageal sphincter, closing of upper esophageal sphincter, and reopening of epiglottis), type of esophageal peristalsis generated, and esophageal transit time...
March 23, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28337816/vertebral-venous-system-abnormalities-identified-with-magnetic-resonance-imaging-in-sighthounds
#2
John C Vernon, Alexane Durand, Julien Guevar, Roberto José-López, Gawain Hammond, Catherine Stalin, Rodrigo Gutierrez-Quintana
In humans, abnormalities of the vertebral venous system are considered rare but significant causes of radiculopathy and myelopathy. Published information on abnormalities of the canine vertebral venous system is currently lacking. Aims of this retrospective descriptive study were to characterize magnetic resonance imaging (MRI) abnormalities of the vertebral venous system in a population of sighthounds, report prevalence of vertebral venous system abnormalities within that population and explore possible clinical significance...
March 23, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28335088/further-characterization-of-computed-tomographic-and-clinical-features-for-staging-and-prognosis-of-idiopathic-pulmonary-fibrosis-in-west-highland-white-terriers
#3
Florence Thierry, Ian Handel, Gawain Hammond, Lesley G King, Brendan M Corcoran, Tobias Schwarz
Idiopathic pulmonary fibrosis is an interstitial lung disease of unknown etiology resulting in progressive interstitial fibrosis, with a known predilection in West Highland white terriers. In humans, computed tomography (CT) is a standard method for providing diagnostic and prognostic information, and plays a major role in the idiopathic pulmonary fibrosis staging process. Objectives of this retrospective, analytical, cross-sectional study were to establish descriptive criteria for reporting CT findings and test correlations among CT, clinical findings and survival time in West Highland white terriers with idiopathic pulmonary fibrosis...
March 23, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28335080/comparisons-among-mri-signs-apparent-diffusion-coefficient-and-fractional-anisotropy-in-dogs-with-a-solitary-intracranial-meningioma-or-histiocytic-sarcoma
#4
Masae Wada, Daisuke Hasegawa, Yuji Hamamoto, Yoshihiko Yu, Aki Fujiwara-Igarashi, Michio Fujita
Although MRI has become widely used in small animal practice, little is known about the validity of advanced MRI techniques such as diffusion-weighted imaging and diffusion tensor imaging. The aim of this retrospective analytical observational study was to investigate the characteristics of diffusion parameters, that is the apparent diffusion coefficient and fractional anisotropy, in dogs with a solitary intracranial meningioma or histiocytic sarcoma. Dogs were included based on the performance of diffusion MRI and histological confirmation...
March 23, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28332267/dr-william-r-lee-bill-1978-2016
#5
Erica Baravik-Munsell
No abstract text is available yet for this article.
March 22, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28281306/injuries-of-the-sagittal-groove-of-the-proximal-phalanx-in-warmblood-horses-detected-with-low-field-magnetic-resonance-imaging-19-cases-2007-2016
#6
Sarah J Gold, Natasha M Werpy, Santiago D Gutierrez-Nibeyro
Sagittal groove injuries of the proximal phalanx are an important cause of lameness in performance horses. The purpose of this retrospective case series study was to describe standing low-field magnetic resonance imaging (MRI) characteristics of these injuries in a group of Warmblood horses. Horses with an MRI diagnosis of sagittal groove injuries involving the proximal phalanx and that had follow-up MRI and clinical outcome information were included. Findings from clinical examinations, diagnostic tests, and other imaging modalities were recorded...
March 9, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28264227/comparison-of-thoracic-ultrasonography-and-radiography-for-the-detection-of-induced-small-volume-pneumothorax-in-the-horse
#7
Jessica Partlow, Florent David, Luanne Michelle Hunt, Fabien Relave, Laurent Blond, Manuel Pinilla, Jean-Pierre Lavoie
Small volume pneumothorax can be challenging to diagnose in horses. The current standard method for diagnosis is standing thoracic radiography. We hypothesized that thoracic ultrasonography would be more sensitive. Objectives of this prospective, experimental study were to describe a thoracic ultrasound method for detection of small volume pneumothorax in horses and to compare results of radiography and ultrasound in a sample of horses with induced small volume pneumothorax. Six mature healthy horses were recruited for this study...
March 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28233422/forensic-radiology-and-imaging-for-veterinary-radiologists
#8
Elizabeth Watson, Hock Gan Heng
Imaging studies are often of evidentiary value in medicolegal investigations involving animals and the role of the veterinary radiologist is to interpret those images for courts as an expert or opinion witness. With progressing interest in prosecuting animal crimes and strengthening of penalties for crimes against animals, the participation of veterinary radiologists in medicolegal investigations is expected to increase. Veterinary radiologists who are aware of radiographic and imaging signs that result in animal suffering, abuse, or neglect; knowledgeable in ways radiology and imaging may support cause of death determinations; conversant in postmortem imaging; comfortable discussing mechanisms and timing of blunt or sharp force and projectile trauma in imaging; and prepared to identify mimics of abuse can assist court participants in understanding imaging evidence...
February 24, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28233385/enchondromatosis-in-an-adult-dog
#9
Rebeca Movilla, Elisabet Dominguez, Rosa Novellas, Jorge Martinez, Ignacio Mesa, Xavier Roura
A 7-year-old crossbreed dog presented for lameness with diffuse soft tissue swelling in the right fore limb. Radiographs identified increased opacity of medullary cavity involving the radius and ulna. Whole-body computed tomography (CT) revealed mineral attenuation in the medullary cavity of multiple bones. Histopathology of the right distal tibia showed a fibrocartilaginous matrix occupying intertrabecular spaces. The final diagnosis was enchondromatosis. Long-term favorable progression of the dog's clinical condition further supported the benign histopathologic classification...
February 24, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28233373/small-intestinal-intramural-hematoma-secondary-to-a-migrating-wire-foreign-body-in-a-dog
#10
Mukul Padalkar, Mason Savage, Eli B Cohen
A 12-year-old spayed female Labrador retriever was presented for a 5-day history of vomiting and inappetence. Radiographic findings included poor peritoneal serosal contrast, segmental small intestinal dilation, and multiple linear, metal opaque, intestinal and peritoneal wire foreign bodies. Sonographic findings included septated, hypoechoic, mural expansion of the distal duodenum and jejunum; and an intramural, thin, linear hyperechogenicity with distal acoustic shadowing consistent with a foreign body. Exploratory laparotomy was performed with resection of the affected distal duodenum and proximal jejunum...
February 24, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28233364/prospective-comparison-of-tumor-staging-using-computed-tomography-versus-magnetic-resonance-imaging-findings-in-dogs-with-nasal-neoplasia-a-pilot-study
#11
Cassie N Lux, William T N Culp, Lynelle R Johnson, Michael Kent, Philipp Mayhew, Lise A Daniaux, Alaina Carr, Sarah Puchalski
Identification of nasal neoplasia extension and tumor staging in dogs is most commonly performed using computed tomography (CT), however magnetic resonance imaging (MRI) is routinely used in human medicine. A prospective pilot study enrolling six dogs with nasal neoplasia was performed with CT and MRI studies acquired under the same anesthetic episode. Interobserver comparison and comparison between the two imaging modalities with regard to bidimensional measurements of the nasal tumors, tumor staging using historical schemes, and assignment of an ordinal scale of tumor margin clarity at the tumor-soft tissue interface were performed...
February 24, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28229501/comparison-between-sedation-and-general-anesthesia-for-high-resolution-computed-tomographic-characterization-of-canine-idiopathic-pulmonary-fibrosis-in-west-highland-white-terriers
#12
Elodie Roels, Thierry Couvreur, Frédéric Farnir, Cécile Clercx, Johny Verschakelen, Géraldine Bolen
Canine idiopathic pulmonary fibrosis is a progressive interstitial lung disease mainly affecting West Highland white terriers. Thoracic high-resolution computed tomographic (T-HRCT) findings for Canine idiopathic pulmonary fibrosis acquired under general anesthesia have been described previously. However, the use of general anesthesia may be contraindicated for some affected dogs. Sedation may allow improved speed and safety, but it is unknown whether sedation would yield similar results in identification and grading of Canine idiopathic pulmonary fibrosis lesions...
February 23, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28185349/indirect-computed-tomographic-lymphography-for-iliosacral-lymphatic-mapping-in-a-cohort-of-dogs-with-anal-sac-gland-adenocarcinoma-technique-description
#13
Stephanie A Majeski, Michele A Steffey, Mark Fuller, Geraldine B Hunt, Philipp D Mayhew, Rachel E Pollard
Sentinel lymph node mapping can help to direct surgical oncologic staging and metastatic disease detection in patients with complex lymphatic pathways. We hypothesized that indirect computed tomographic lymphography (ICTL) with a water-soluble iodinated contrast agent would successfully map lymphatic pathways of the iliosacral lymphatic center in dogs with anal sac gland carcinoma, providing a potential preoperative method for iliosacral sentinel lymph node identification in dogs. Thirteen adult dogs diagnosed with anal sac gland carcinoma were enrolled in this prospective, pilot study, and ICTL was performed via peritumoral contrast injection with serial caudal abdominal computed tomography scans for iliosacral sentinel lymph node identification...
February 9, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28185344/incidental-and-nonincidental-canine-thyroid-tumors-assessed-by-multidetector-row-computed-tomography-a-single-centre-cross-sectional-study-in-4520-dogs
#14
Giovanna Bertolini, Michele Drigo, Luca Angeloni, Marco Caldin
Thyroid nodules are common in dogs and are increasingly likely to be detected with the increased use of advanced imaging modalities. An unsuspected, nonpalpable, asymptomatic lesion, defined as a thyroid incidentaloma, may be discovered on an imaging study unrelated to the thyroid gland. The objective of this single-center cross-sectional study was to assess the prevalence and computed tomography (CT) characteristics of incidental and nonincidental thyroid tumors in a large population of dogs, using prospective recruitment of patients undergoing CT examination for various reasons during the period of 2005-2015...
February 9, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28176406/imaging-diagnosis-computed-tomographic-angiography-characteristics-of-multiple-vascular-anomalies-in-a-senior-dog-with-late-onset-regurgitation
#15
Hakyoung Yoon, Jaehwan Kim, Gi Bum Kwon, Jin Hyuk Lim, Kidong Eom
A 10-year-old dog weighing 3.4 kg presented with intermittent regurgitation. Esophagography revealed that the thoracic esophagus was compressed dorsally at the region of the fourth intercostal space and segmentally dilated from the second to third intercostal region. Three-dimensional computed tomographic (CT) angiography confirmed a suspected vascular ring anomaly and also revealed multiple other vascular anomalies. These included aberrant right subclavian artery, absence of bilateral external jugular veins, right-gastric caval shunt, and a completely duplicated caudal vena cava...
February 8, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28176404/clinical-and-magnetic-resonance-imaging-features-of-idiopathic-oculomotor-neuropathy-in-14-dogs
#16
Roser Tetas Pont, Courtenay Freeman, Ruth Dennis, Claudia Hartley, Elsa Beltran
Ophthalmoplegia/ophthalmoparesis (internal, external, or both) has been reported in dogs secondary to neoplasia affecting the oculomotor nerve and is usually given a poor prognosis. The purpose of this retrospective study was to describe the clinical findings, magnetic resonance imaging (MRI) findings, management, outcome, and follow-up in a group of canine cases with idiopathic oculomotor neuropathy. Inclusion criteria included cases with ophthalmoplegia/ophthalmoparesis (internal, external or both) as sole neuroophthalmologic signs, complete ophthalmic and neurologic examination, head MRI, and a minimum follow-up period of 1 year...
February 8, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28176448/intraoperative-image-navigation-experimental-study-of-the-feasibility-and-surgeon-preference-between-a-sterile-encased-nintendo-wii-tm-remote-and-standard-wireless-computer-mouse
#17
Ryan Appleby, Alex Zur Linden, William Sears
Diagnostic imaging plays an important role in the operating room, providing surgeons with a reference and surgical plan. Surgeon autonomy in the operating room has been suggested to decrease errors that stem from communication mistakes. A standard computer mouse was compared to a wireless remote-control style controller for computer game consoles (Wiimote) for the navigation of diagnostic imaging studies by sterile personnel in this prospective survey study. Participants were recruited from a cohort of residents and faculty that use the surgical suites at our institution...
February 7, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28176395/imaging-diagnosis-computed-tomography-findings-in-a-dog-with-spontaneous-transmural-migration-of-a-textiloma-into-the-cecum
#18
Agustina Anson, Juana D Carrillo, Alejandro Bayon, Maria Teresa Escobar, Juan Seva, Amalia Agut
A 3-year-old spayed female dog was presented with 3-month history of severe bilateral uveitis subsequent to previous ovariohysterectomy. Physical examination revealed moderate abdominal pain. Computed tomography showed a nonobstructive heterogeneous mass-like lesion with a speckled gas pattern (spongiform pattern) within the cecum. Exploratory laparotomy revealed a surgical swab in the lumen of the cecum with severe adhesions. Histopathological examination demonstrated a chronic inflammatory pyogranulomatous reaction to the retained swab embedded within the intestinal wall, consistent with transmural migration of the swab from the peritoneal cavity into the cecum...
February 7, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28176389/imaging-diagnosis-antemortem-detection-of-oligodendroglioma-cerebrospinal-fluid-drop-metastases-in-a-dog-by-serial-magnetic-resonance-imaging
#19
Mariana Vigeral, R Timothy Bentley, Nicholas J Rancilio, Margaret A Miller, Hock Gan Heng
An English Bulldog underwent radiation therapy of an intracranial, left lateral ventricle mass. Following resolution of the primary mass, an intraventricular fourth ventricle lesion developed. Subsequently, multiple lesions developed from the cervical central canal and leptomeninges. Serial magnetic resonance imaging documented the propagation of lesions along the cerebrospinal fluid (CSF) pathways, known as "CSF drop metastasis." Histopathology confirmed multifocal intraventricular and leptomeningeal oligodendroglioma...
February 7, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28160358/imaging-diagnosis-radiography-ultrasonography-and-computed-tomography-of-a-giant-fecaloma-causing-stercoral-perforation-of-the-colon-in-a-dog-with-a-prostatic-abscess
#20
Jaehwan Kim, Hakyoung Yoon, Kidong Eom
A mixed-breed dog presented with tenesmus, hematochezia, and abdominal distension of 2 weeks duration. Radiography showed a large round mass with a "soap-bubble" appearance and shell-like mineralization in the caudal abdomen. Computed tomography revealed a lamellate mineralized mass 8 cm in diameter and containing air in the descending colon and prostatic abscess. Heterogeneously contrast-enhanced, irregularly thickened colonic wall with intramural and peritoneal free gas indicated stercoral colonic perforation...
February 4, 2017: Veterinary Radiology & Ultrasound
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