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Veterinary Radiology & Ultrasound

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https://read.qxmd.com/read/30776858/a-retrospective-analysis-of-radiation-oncology-related-scientific-articles-in-the-journal-veterinary-radiology-and-ultrasound-trends-over-40-years-1976-2015
#1
Koichi Nagata
The journal Veterinary Radiology & Ultrasound is a veterinary specialty journal devoted to the fields of veterinary diagnostic imaging and radiation oncology. The purpose of this retrospective, observational study is to evaluate progressive trends in radiation oncology articles published in Veterinary Radiology & Ultrasound during the 40-year period (1976-2015) and describe a shift of trends through several viewpoints. This 40-year period was divided into four subperiods: Period 1 (1976-1985), Period 2 (1986-1995), Period 3 (1996-2005), and Period 4 (2006-2015)...
February 18, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30768744/stifle-joint-osteoarthritis-at-the-time-of-diagnosis-of-cranial-cruciate-ligament-injury-is-higher-in-boxers-and-in-dogs-weighing-more-than-35-kilograms
#2
Samuel Gilbert, Anke Langenbach, Denis J Marcellin-Little, Anthony P Pease, Hongyu Ru
Osteoarthritis is a ubiquitous disease in dogs. The purpose of this retrospective study was to characterize the severity and distribution of osteoarthritis (OA) within the joint and to identify differences among dog breeds in the severity of OA in the cranial cruciate ligament (CCL)-deficient stifle joint. Radiographs of 240 stifles from 51 Boxers, 66 German Shepherds, 100 Labrador Retrievers, and 23 Siberian Huskies with confirmed CCL rupture were included. Radiographs of the stifle joint were evaluated and OA severity was graded at 33 sites within and around the joint, and patella alta was graded as present or absent for a potential total stifle OA score of 100...
February 15, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30746814/veterinary-radiology-history-purpose-current-status-and-future-expectations
#3
LETTER
Jerry M Owens, Robert Lewis, William Blevins, Sam Silverman, Daniel Feeney, John Mattoon
No abstract text is available yet for this article.
February 12, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30746806/treatment-of-leiomyosarcoma-in-a-tiger-panthera-tigris-with-stereotactic-radiotherapy
#4
Bonnie B Boudreaux, Susan M LaRue, Nathalie Rademacher, Daniel Neck, Britton Grasperge, Charles Wood, David G Baker
A 10-year-old male captive tiger (Panthera tigris) developed right-sided facial asymmetry and enlargement. Computed tomography revealed a destructive mass of the right maxillary bone with right nasal cavity involvement. Histopathology indicated a spindle cell sarcoma. A single fraction of 22 Gy using stereotactic radiotherapy was prescribed. After treatment, the facial conformation returned to normal and the tiger resumed normal behavior. Diagnostics 4 months later indicated severe metastatic disease. Humane euthanasia and necropsy were performed...
February 12, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30740815/ultrasonographic-features-of-mesenteric-cysticercosis-in-a-domestic-rabbit-oryctolagus-cuniculus
#5
Ariel Brody, Timothy B Kloer, Robert T Rush, Lauren J Harris, Lynn R Griffin, Miranda J Sadar
A 5-year-old, 0.92-kg (2-lb), spayed female Dwarf Hotot rabbit was evaluated for a 1-day duration of lethargy and anorexia. Survey radiographs revealed evidence of gastrointestinal stasis. Abdominal ultrasonography characterized multiple small, round, anechoic structures embedded in the mesentery. These structures were thin walled with hyperechoic strands/septations. Most of the structures contained a well-defined, eccentric, hyperechoic nodule adherent to the intraluminal wall. Mesenteric cysticercosis was confirmed via exploratory laparotomy and histopathology...
February 10, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30656773/the-elekta-fraxion%C3%A2-system-is-not-suitable-for-maxillary-fixation-in-canine-conformal-radiation-therapy-techniques
#6
Sonya Yu, Deanna Morrow, Vaughan Moutrie, David Lurie
In this prospective, exploratory study, we evaluated the positioning accuracy in a group of 15 dogs undergoing fractionated stereotactic radiotherapy for tumors affecting the head, using a modified human maxillary fixation device (Elekta Fraxion™ system). Positioning was assessed using on-board volumetric imaging, with a six-degrees-of-freedom image registration technique. Prior to treatment delivery, CBCT images were obtained and patient alignment was corrected, in both translational and rotational planes, using a six-degrees-of-freedom robotic patient positioning system (HexaPOD Evo RT System)...
January 18, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30656772/improved-visualization-of-the-lumbar-spine-nerve-roots-in-dogs-using-water-excitation-proset-as-opposed-to-short-tau-inversion-recovery-a-retrospective-study-of-two-fat-suppression-mri-sequences
#7
Chiara Bergamino, Séamus E Hoey, Marie de Swarte, Cliona Skelly
Magnetic resonance imaging fat suppression techniques are commonly used for diagnosis of canine spinal disease, however, studies comparing different techniques are currently lacking. This retrospective, methods comparison study aimed to evaluate water excitation and STIR MRI pulse sequences for visualization of canine lumbar spinal nerve roots. For inclusion, all dogs had to have dorsal planar MRI studies of the lumbar spine using both sequences. Visual grading analysis was used for scoring the following five criteria: degree of fat suppression; nerve root visualization; subjective tissue contrast; presence of noise; and overall better image quality...
January 18, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30654407/canine-insulinomas-appear-hyperintense-on-mri-t2-weighted-images-and-isointense-on-t1-weighted-images
#8
Raelyn Walczak, Matthew Paek, Matthew Uzzle, Jim Taylor, Swan Specchi
Clinical and imaging diagnosis of canine insulinomas has proven difficult due to nonspecific clinical signs and the small size of these tumors. The aim of this retrospective case series study was to describe MRI findings in a group of dogs with pancreatic insulinomas. Included dogs were presented for suspected pancreatic insulinoma, MRI was used to assist with localization of the primary lesion, and the diagnosis was confirmed with surgical exploratory laparotomy and histopathology. The MRI studies for each dog were retrieved and the following data were recorded: T1-weighted and T2-weighted signal intensities, type of contrast enhancement, size and location of the primary lesion, and characteristics of metastatic lesions (if present)...
January 17, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30614116/use-of-contrast-enhanced-ultrasonography-in-the-diagnosis-of-a-liver-lobe-torsion-in-a-rabbit-oryctolagus-cuniculus
#9
Emmelie Stock, Katrien Vanderperren, Ilse Moeremans, Hilde de Rooster, Katleen Hermans, Jimmy H Saunders
A 1-year-old male French Lop rabbit (Oryctolagus cuniculus) was presented with a sudden onset of hyporexia. Physical examination revealed cranial abdominal discomfort. Liver enzymes were elevated on serum biochemistry profile. Abdominal radiographs showed diffusely gas-dilated small intestinal loops. On abdominal ultrasound, a lobe in the right aspect of the liver was hypoechoic with rounded margins and was surrounded by hyperechoic fat and anechoic fluid. Contrast-enhanced ultrasonography showed complete lack of perfusion in the abnormal right liver lobe...
January 4, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30604431/lack-of-radioprotection-knowledge-and-compliance-in-norwegian-equine-ambulatory-practice
#10
Marthe Aamodt Mikkelsen, Nina Ottesen, Bjørn Helge Knutsen, Åste Søvik
There is an increasing use of mobile radiographic units in equine ambulatory practices in Norway. Horse owners or handlers often participate in the radiographic examination in a non-controlled area. The aim of this descriptive, cross-sectional, survey study was to evaluate the radiation safety and protection in use of mobile radiography, and to identify areas where special attention from the regulatory authorities as well as veterinary educators would be required. A questionnaire was distributed to all equine veterinarians assumed to have access to mobile radiographic units, as part of a formal inspection in cooperation with the Norwegian Radiation Protection Authority...
January 2, 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30590864/videofluoroscopy-ct-angiography-and-ultrasonography-of-congenital-esophageal-stenosis-in-a-labrador-retriever
#11
Matthew A Kopke, Arnon Gal, Craig G Ruaux, Leah C Gans, Danielle Aberdein, Mark C Owen, Richard K Burchell
A 7-week-old Labrador retriever presented for further investigation into acute onset regurgitation, following weaning from liquid to solid food. A videofluoroscopic swallow study demonstrated a severe, focal esophageal dilation in the mid-cervical region, with marked luminal narrowing distally. Computed tomography with angiography revealed esophageal stenosis, extending from C4-T2, secondary to circumferential esophageal wall thickening. With the concern for development of secondary aspiration pneumonia, the owners elected to euthanize the dog and consented to postmortem examination...
December 27, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30585377/sentinel-lymph-node-mapping-of-the-canine-anal-sac-using-lymphoscintigraphy-a-pilot-study
#12
Daniel S Linden, Robert Cole, D Michael Tillson, Harry W Boothe, Brad M Matz
Sentinel lymph node mapping and biopsy are important parts of oncologic staging in human medicine. Sentinel lymph node mapping enables identification of the first lymph node to receive lymphatic drainage while avoiding unnecessary lymph node dissection. Anal sac adenocarcinoma is the most common malignant neoplasm of the canine perineal area. For dogs with anal sac adenocarcinoma, lympadenectomy and metastasis to the iliosacral lymphocentrum are negative prognostics indicators. The objectives of this prospective, two by two, crossover pilot study were to establish the feasibility of lymphoscintigraphy using Technetium-99 sulfur colloid of the canine anal sac of healthy dogs, compare two injection techniques, and the time for identification of sentinel lymph nodes using each technique...
December 25, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30575174/long-term-survival-with-stereotactic-radiotherapy-for-imaging-diagnosed-pituitary-tumors-in-dogs
#13
Katherine S Hansen, Allison L Zwingenberger, Alain P Théon, Michael S Kent
Published studies on the use of stereotactic radiotherapy for dogs with pituitary tumors are limited. This retrospective observational study describes results of stereotactic radiotherapy for 45 dogs with imaging-diagnosed pituitary tumors. All dogs were treated at a single hospital during the period of December 2009-2015. The stereotactic radiotherapy was delivered in one 15 Gray (Gy) fraction or in three 8 Gy fractions. At the time of analysis, 41 dogs were deceased. Four were alive and censored from all survival analyses; one dog received 8 Gy every other day and was removed from protocol analyses...
December 21, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30557908/nodules-and-masses-are-associated-with-malignant-pleural-effusion-in-dogs-and-cats-but-many-other-intrathoracic-ct-features-are-poor-predictors-of-the-effusion-type
#14
Jennifer A Reetz, Jantra N Suran, Allison L Zwingenberger, Darko Stefanovski
Thoracic CT may be used in the workup of patients with pleural effusion. In humans, certain pleural features on CT aid in diagnosing an underlying cause for pleural effusion, whereas this is not well studied in veterinary medicine. This retrospective cross-sectional analytical study assessed pleural and other intrathoracic abnormalities on CT in dogs and cats with pleural effusion and explored potential discriminatory features between effusion types. Eighty-nine dogs and 32 cats with pleural cytology and/or histopathology were categorized into malignant pleural disease (15 dogs and 11 cats), pyothorax (34 dogs and 7 cats), chylothorax (20 dogs and 11 cats), transudative (11 dogs and 2 cats), and hemorrhagic effusion (9 dogs and 1 cat)...
December 17, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30537414/contrast-enhanced-ultrasonography-is-a-feasible-technique-for-quantifying-hepatic-microvascular-perfusion-in-dogs-with-extrahepatic-congenital-portosystemic-shunts
#15
Masahiro Tamura, Hiroshi Ohta, Khoirun Nisa, Tatsuyuki Osuga, Noboru Sasaki, Keitaro Morishita, Mitsuyoshi Takiguchi
Extrahepatic-congenital portosystemic shunt is a vascular anomaly that connects the portal vein to the systemic circulation and leads to a change in hepatic microvascular perfusion. However, an assessment of hepatic microvascular perfusion is limited by conventional diagnostic modalities. The aim of this prospective, exploratory study was to assess hepatic microvascular perfusion in dogs with extrahepatic-congenital portosystemic shunt using contrast-enhanced ultrasonography (CEUS) using perfluorobutane (Sonazoid® )...
December 9, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30475441/electrocardiography-gated-cardiac-ct-angiography-can-differentiate-brachycephalic-dogs-with-and-without-pulmonary-valve-stenosis-and-findings-differ-from-transthoracic-echocardiography
#16
Ada To, Eric T Hostnik, Jaylyn D Rhinehart, Brian A Scansen
Pulmonary valve stenosis (PS) is one of the most commonly diagnosed congenital heart defects in dogs. Currently, transthoracic echocardiography (TTE) is the standard modality used to evaluate PS. Image acquisition by TTE can be challenging in some brachycephalic breeds of dogs. The use of echocardiographic-gated CT angiography (ECG-gated CTA) in veterinary medicine is limited. This retrospective method comparison study investigated right and left ventricular outflow diameters by sedated ECG-gated CTA and unsedated TTE in 14 brachycephalic dogs with PS and 12 brachycephalic dogs without PS...
November 26, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30475439/contrast-enhanced-ultrasonography-characteristics-of-intrathoracic-mass-lesions-in-36-dogs-and-24-cats
#17
Thorsten Rick, Miriam Kleiter, Ilse Schwendenwein, Eberhard Ludewig, Martin Reifinger, Katharina M Hittmair
Contrast-enhanced ultrasonography (CEUS) is increasingly available for veterinary patients, however limited studies describe the use of this method for characterizing intrathoracic mass lesions. The aim of this prospective, observational study was to describe CEUS enhancement patterns for intrathoracic mass lesions in a sample of cats and dogs. Sixty patients (36 dogs, 24 cats) were included. Standardized CEUS examinations were performed for 41 pulmonary masses (68%) and 19 mediastinal masses (32%). Final diagnosis was based on cytology and/or histopathology...
November 26, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30475434/bone-marrow-lesions-of-the-distal-condyles-of-the-third-metacarpal-bone-are-common-and-not-always-related-to-lameness-in-sports-and-pleasure-horses
#18
Cécile De Guio, Emilie Ségard-Weisse, Aurélie Thomas-Cancian, Michael Schramme
The metacarpophalangeal joint is a common site of pain in horses. Little information is available about bone marrow lesions in the distal condyles of the third metacarpal bone in sports and pleasure horses. Aims of this prospective, retrospective, observational study were to evaluate the prevalence of bone marrow lesions in the distal condyles of the third metacarpal bone, to describe their anatomic distribution and to correlate lesions with the presence of lameness and the level and type of activity. All sports and pleasure horses undergoing standing low-field MRI of the front fetlock region between 2009 and 2016 were included and divided into three lameness groups according to the results of diagnostic analgesia...
November 26, 2018: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30632252/acknowledgment-of-2018-reviewers-and-editorial-board-members-for-veterinary-radiology-ultrasound
#19
EDITORIAL
Jeryl Jones, Lucinda Ayres
No abstract text is available yet for this article.
January 2019: Veterinary Radiology & Ultrasound
https://read.qxmd.com/read/30632251/american-college-of-veterinary-radiology-european-college-of-veterinary-diagnostic-imaging-calendar-of-important-dates
#20
(no author information available yet)
No abstract text is available yet for this article.
January 2019: Veterinary Radiology & Ultrasound
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