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Veterinary Radiology & Ultrasound

Florence Thierry, Jennifer Chau, Mariano Makara, Swan Specchi, Edoardo Auriemma, Maurizio Longo, Ian Handel, Tobias Schwarz
Multiphasic multidetector computed tomographic angiography is a standard diagnostic test for canine abdominal vascular disorders. Three imaging protocols have been previously described. The test-bolus protocol allows precise timing but can be time consuming to perform. Bolus-tracking software is fast and easy to use but can be problematic for exact timing of vascular phases. A recently described fixed-injection-duration protocol is not influenced by body weight and provides a wider temporal window for arterial acquisitions...
September 7, 2018: Veterinary Radiology & Ultrasound
Yun-Hye Kim, Gum-Joo Choi, Chul Park
Although the major pathological feature of chronic mitral valve disease is mitral regurgitation, myocardial dysfunction has been suggested to be present in dogs with chronic mitral valve disease. However, accurate assessment of myocardial function remains challenging. Doppler-derived rate of left ventricular pressure change is a simple, less load-dependent method for evaluating myocardial function. We aimed to evaluate Doppler-derived rate of left ventricular pressure change for assessing myocardial function in different stages of dogs with chronic mitral valve disease...
September 5, 2018: Veterinary Radiology & Ultrasound
Meagan A Walker, Mathew R A MacCormick, Jessica J Kilkenny, John Phillips, Ameet Singh, Alex Zur Linden
Radiological skills including ultrasonography and fluoroscopy, require a combination of manual dexterity and visuospatial skill to develop competency. The ability to detect veterinary students with an interest in radiology but who are deficient in these skills, may permit more individual adaptations to training programs, allowing for students training in radiology to achieve maximal potential. The objective of this cohort study was to investigate whether innate dexterity and visuospatial skill could be used to predict performance of basic ultrasound and fluoroscopic skills in veterinary students...
September 4, 2018: Veterinary Radiology & Ultrasound
Kathleen Tsimbas, Michelle Turek, Neil Christensen, David M Vail, Lisa Forrest
Radiotherapy is the treatment of choice for non-resectable canine thyroid carcinoma. High tumor response rates and median survival times of 2 years or longer have been previously reported with conventionally fractionated and hypofractionated protocols, even in dogs with distant metastasis. The objective of this retrospective, descriptive, case series study was to evaluate the clinical outcomes of dogs with thyroid carcinoma irradiated with palliative intent using hypofractionated radiotherapy at our institution...
September 4, 2018: Veterinary Radiology & Ultrasound
Stefano Schiavo, Eugenio Cillán-García, Yvonne Elce, Tiziana Liuti, Sarah E Taylor
Solar foot penetration is one of the causes of deep digital flexor tendon injuries in horses, however, limited information is available on the prognosis for return to soundness in the absence of synovial sepsis. Objectives of this retrospective observational study were to describe low-field magnetic resonance imaging (MRI) findings and long-term outcome for a group of horses with this combination of clinical problems. Horses were included if low-field standing MRI of the foot was performed following puncture wounds, injury of the deep digital flexor tendon was diagnosed, and sepsis was confirmed to be absent in all adjacent synovial structures (distal interphalangeal joint, navicular bursa, and digital flexor tendon sheath)...
August 29, 2018: Veterinary Radiology & Ultrasound
Janina Bartels, Silke Hecht, Gordon A Conklin, Sun Xiaocun
As gadolinium-based contrast agents are paramagnetic and have T2 shortening effects, they have the potential to adversely affect gradient recalled echo sequences. The aim of this prospective, cross-sectional study was to evaluate the effects of gadolinium administration on T2*-weighted sequence diagnostic quality and signal intensity when imaging the canine brain. A total of 100 dogs underwent brain magnetic resonance imaging (MRI) including pre- and postcontrast T2*-weighted sequences acquired with a delay (Group A) or immediately (Group B) following gadolinium administration...
August 29, 2018: Veterinary Radiology & Ultrasound
Jodie Daglish, David D Frisbie, Kurt T Selberg, Myra F Barrett
High field magnetic resonance imaging (MRI) is increasingly used for horses with suspected stifle disease, however there is limited available information on normal imaging anatomy and potential incidental findings. The aim of this prospective, anatomic study was to develop an optimized high field MRI protocol for evaluation of the equine stifle and provide detailed descriptions of the normal MRI appearance of the stifle soft tissues, using ultrasound and gross pathological examination as comparison tests. Nine cadaver limbs were acquired from clinically normal horses...
August 22, 2018: Veterinary Radiology & Ultrasound
Toshiyuki Tanaka, Hideo Akiyoshi, Keiichiro Mie, Mari Okamoto, Yuuki Yoshida, Shohei Kurokawa
In humans, computed tomography (CT) is a widely performed technique for the diagnosis and staging of gastric tumors. The purpose of this retrospective case series study was to describe CT findings in a group of dogs with confirmed gastric tumors. For each included dog, the following CT parameters were recorded: gastric tumor location, tumor shape, gastric involvement pattern, tumor enhancement pattern in early and late phases, presence and location of lymphadenopathy, gastric tumor attenuation values, attenuation values of enlarged lymph nodes, maximum short-axis diameter (mm) of enlarged lymph node, maximum long-axis diameter (mm) of enlarged lymph node, and short-axis diameter to long-axis diameter ratio (short axis/long axis)...
August 19, 2018: Veterinary Radiology & Ultrasound
Rita Martins Garcia da Fonseca, Laurence Evrard, Silvia Rabba, Alexandra Salciccia, Valeria Busoni
Lesions of the manica flexoria are a tenoscopic finding in horses with digital flexor tendon sheath tenosynovitis. This retrospective case series study describes the ultrasonographic findings in seven horses admitted for digital flexor tendon sheath swelling associated with lameness and tenoscopic confirmation of a manica flexoria tear. Six horses had a partial manica flexoria tear, one a complete rupture. The ultrasonographic examination included a static examination on the weight and non-weight bearing limb and a dynamic limb assessment during flexion and extension...
August 19, 2018: Veterinary Radiology & Ultrasound
Mario Ricciardi
No abstract text is available yet for this article.
August 13, 2018: Veterinary Radiology & Ultrasound
Jenelle Soppet, Benjamin D Young, John F Griffin, Lindsey J Gilmour, Victoria Heffelman, Katherine Tucker-Mohl, David S Biller, Collin A Wolff, Kathy A Spaulding
Limited information is available on the ultrasonographic characteristics of extruded gallbladder mucoceles. The objective of this retrospective case series study was to describe the ultrasonographic features of extruded gallbladder mucoceles in a group of dogs. Medical records of four veterinary centers were searched between June 2010 and January 2018 for all dogs with a suspected extruded gallbladder mucocele based on abdominal ultrasound. Seven client-owned dogs met the inclusion criteria. All seven dogs had a discrete, heteroechoic, multilayered, stellate, or striated mass within the peritoneal cavity...
August 6, 2018: Veterinary Radiology & Ultrasound
Elizabeth M Dunfield, Michelle M Turek, Kevin A Buhr, Neil C Christensen
Radiotherapy plays an important role in curative and palliative cancer treatment. As a novel radiation delivery technique, stereotactic radiotherapy utilizes three-dimensional-conformal treatment planning, high-precision beam delivery technology, and patient specific position verification to target tumors, often in one to five high-dose fractions. Currently, there is no consensus about best stereotactic radiotherapy practices in veterinary radiotherapy. The objective of this study was to document the breadth of perspectives, techniques, and applications of stereotactic radiotherapy in veterinary medicine...
July 30, 2018: Veterinary Radiology & Ultrasound
Jean-François Boursier, Alexandre Fournet, Jean Bassanino, Mathieu Manassero, Anne-Sophie Bedu, Dimitri Leperlier
During minimally invasive spinal surgery, correct identification of the affected intervertebral disc space is critical. Percutaneous palpation is commonly used, but results may be unreliable. Fluoroscopy is the gold standard but can be cumbersome and exposes operators to ionizing radiation. Spinal ultrasound has been described in veterinary medicine and could be a feasible alternative. This prospective, methods comparison study mimicked a minimally invasive spinal surgery in 10 canine cadavers and compared the accuracy of ultrasound and percutaneous palpation for thoracolumbar intervertebral disc space identification, using fluoroscopy as the reference standard...
July 29, 2018: Veterinary Radiology & Ultrasound
Kelly R Cummings, Federico Vilaplana Grosso, George E Moore, Mark Rochat, Stephanie A Thomovsky, R Timothy Bentley
Toy breed dogs are overrepresented for atlantoaxial instability. Radiography is a standard diagnostic test, however published toy breed-specific radiographic measurements are lacking and diagnosis remains largely subjective. Aims of this retrospective, diagnostic accuracy study were to describe normal values and determine whether some quantitative radiographic criteria strongly support a diagnosis of atlantoaxial instability specific to toy breed dogs. Neutral lateral and ventrodorsal radiographs of 102 toy breed dogs (92 control, 10 affected) were reviewed...
July 16, 2018: Veterinary Radiology & Ultrasound
Garrett S Oetelaar, Chee Kin Lim, Hock Gan Heng, Christopher M Fulkerson, Marejka H Shaevitz, Craig A Thompson
A 10-year-old male neutered Domestic Shorthair cat was referred for chronic inappetence, weight loss, and hematochezia and an abdominal mass. Abdominal ultrasonography revealed a heterogeneously hypoechoic transmural colonic mass, which extended beyond the serosa and into the adjacent mesentery. Cytology and clonality assays of fine needle aspirates of the mass and mesenteric nodules yielded a diagnosis of B-cell lymphoma. Colonic lymphoma with mesenteric involvement can have a similar appearance to carcinomatosis, therefore a definitive diagnosis requires sampling and further testing of the mesenteric lesions...
July 16, 2018: Veterinary Radiology & Ultrasound
Raul Altuzarra, Rebeca Movilla, Xavier Roura, Yvonne Espada, Natalia Majo, Rosa Novellas
A 5-year-old castrated male Domestic Shorthair cat presented for evaluation of chronic history of nasal discharge and nasal stridor. On computed tomography (CT), a destructive ill-defined mass of soft tissue attenuation was occupying the right nasal cavity and extending into the left nasal cavity, nasopharynx, and rostral cranial cavity. Histopathology of the rhinoscopically excised samples consisted with destructive granulomatous rhinitis secondary to Leishmania spp. Chronic granulomatous rhinitis with intracranial and nasopharyneal extension secondary to Leishmania spp...
July 11, 2018: Veterinary Radiology & Ultrasound
Sarah J Woods, Carrie Palm, Matt Sheley, Edward C Feldman, Rachel E Pollard
Ultrasound is used to evaluate the parathyroid glands of several species but there are limited reports of its use in cats. With this prospective anatomic study, we hypothesized that ultrasound could identify two parathyroid glands as hypoechoic nodules associated with each thyroid lobe and that a normal size range could be established. Six cat cadavers were imaged with ultrasound and histopathology of the thyroid and parathyroid tissue was performed for comparison. In addition, clinically healthy adult cats were prospectively recruited and placed in Group 1 (2-6 years; n = 11) or Group 2 (7-13 years; n = 9)...
July 11, 2018: Veterinary Radiology & Ultrasound
Jeryl C Jones, Johanna J Lascano
Meeting the changing needs of journal users is important for veterinary editors. The objective of this prospective survey study was to analyze user opinions for the journal Veterinary Radiology & Ultrasound. An online survey was developed based on a consensus among the journal's Editor-in-Chief and Editorial Board members, an industrial organizational psychologist, Executive Council members for the journal's owner organization, representatives of the journal's publisher, and members of the authors' University Institutional Review Board...
July 11, 2018: Veterinary Radiology & Ultrasound
Krista Estell, Mathieu Spriet, Kathryn L Phillips, Monica Aleman, Carrie J Finno
Previously published myelographic studies do not report findings at the junction between the seventh cervical (C7) and first thoracic vertebrae (T1). Modern digital radiographic equipment allows improved visualization of C7-T1. Based on clinical experience, we hypothesized that 50% reduction of the dorsal myelographic column or 20% reduction of the dural diameter, criteria commonly used as a supportive finding for spinal cord compression in the cervical vertebral column, do not apply at C7-T1. A myelographic study was performed on 12 healthy, neurologically normal horses...
July 11, 2018: Veterinary Radiology & Ultrasound
Andrew J Leffler, Eric T Hostnik, Emma E Warry, Gregory G Habing, Danelle M Auld, Eric M Green, Wm Tod Drost
Transitional cell carcinoma is the most common cancer of the canine urinary tract. The inconsistent appearance of transitional cell carcinoma in patients introduces error if applying mathematic models for extrapolating total tumor volume from linear measurements. Reliable techniques to assess tumor size are important for monitoring treatment response. A method comparison study was performed comparing four techniques for calculating tumor volume were compared: (1 and 2) contoured tracing of tumor margins using serial computed tomography (CT) images using pre-(1) and postintravenous (2) contrast medium studies, (3) longest three linear dimensions using CT, and (4) longest three linear dimensions on abdominal ultrasound...
July 10, 2018: Veterinary Radiology & Ultrasound
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