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Veterinary Radiology & Ultrasound

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https://www.readbyqxmd.com/read/28233422/forensic-radiology-and-imaging-for-veterinary-radiologists
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/28133916/computed-tomographic-features-of-incisor-pseudo-odontomas-in-prairie-dogs-cynomys-ludovicianus
#14
Igor Pelizzone, Francesco Di Ianni, Antonella Volta, Giacomo Gnudi, Sabrina Manfredi, Mara Bertocchi, Enrico Parmigiani
Maxillary incisor pseudo-odontomas are common in pet prairie dogs and can cause progressive respiratory obstruction, while mandibular pseudo-odontomas are rarely clinically significant. The aim of this retrospective cross-sectional study was to describe CT features of maxillary and mandibular incisor pseudo-odontomas vs. normal incisors in a group of pet prairie dogs. All pet prairie dogs with head CT scans acquired during the period of 2013-2015 were included. A veterinary radiologist who was aware of final diagnosis reviewed CT scans and recorded qualitative features of affected and normal incisors...
January 29, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28133850/imaging-diagnosis-radiographic-ultrasonographic-and-computed-tomographic-characteristics-of-a-duodenal-duplication-cyst-in-a-young-cat
#15
Amalia Agut, Juana D Carrillo, Miryam Martínez, Jose Murciano, Eliseo Belda, Antonio Bernabé, Marta Soler
A 7-month-old, 2.8 kg, intact female Siamese cat was evaluated for repetitive and intermittent episodes of vomiting and anorexia. Abdominal palpation revealed a round, firm, nonpainful mass in the right cranial abdomen. Ultrasonography findings were consistent with a cystic structure adjacent to the descending duodenum. The structure exhibited a "muscular rim sign." A duodenal duplication cyst was confirmed by histopathological analysis. Computed tomography ruled out concurrent vertebral anomalies and clarified anatomic relationships for surgical planning...
January 29, 2017: Veterinary Radiology & Ultrasound
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
#16
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
#17
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
#18
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
#19
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
#20
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
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