Veterinary Radiology & Ultrasound最新文献

{"title":"ECG-Gated Cardiac Multidetector CT Evaluation of the Normal Pulmonary Valve and Right Ventricular Outflow Tract in Dogs.","authors":"Chiara Massarenti, Marta Croce, Alessia Diana, Massimiliano Tursi, Eric Zini, Oriol Domenech, Edoardo Auriemma","doi":"10.1111/vru.70006","DOIUrl":"10.1111/vru.70006","url":null,"abstract":"<p><p>With the advancement in imaging technology, ECG-gated cardiac multidetector computed tomography (MDCT) has emerged as a tool for the anatomic evaluation of the pulmonary valve and right ventricular outflow tract (RVOT) in human medicine. Currently, the evaluation of the pulmonary valve relies primarily on echocardiographic examination. However, the bi-dimensional nature of this technique and the location/orientation of the pulmonary valve in the thoracic cavity can pose challenges. In human medicine, ECG-gated MDCT distinguishes four main anatomic components of the pulmonary valve and RVOT: the pulmonary valve leaflets, the sinotubular junction, the anatomic ventriculo-arterial junction and the hemodynamic ventriculo-arterial junction. Hence, this study aimed to describe the computed tomographic findings of the normal RVOT and pulmonary cusps in a population of dogs. This is an anatomic prospective descriptive study. A total of 24 dogs underwent a complete echocardiographic examination and an ECG-gated MDCT to rule out pulmonary valve abnormalities. Multiplanar reconstruction of the pulmonary valve was obtained. Additionally, hearts from three dogs euthanized for reasons unrelated to the study were collected and their gross and histological findings were compared with the CT images. The ECG-gated MDCT provided good visualization of the pulmonary valve leaflets, the sinotubular junction, the anatomic ventriculo-arterial junction and the hemodynamic ventriculo-arterial junction. Notably, the short-axis view of the pulmonary valve anatomy resembled the 'Mercedes-Benz sign' characteristic of the aortic valve in all dogs. In conclusion, this study provides the first description of the CT anatomy of the RVOT in dogs without pulmonary valve and RVOT abnormalities.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e70006"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143012765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive radiographic grading system and clinical outcomes of canine tibial avulsion fractures in dogs.","authors":"Oscar Alas, Aitor Gallastegui, Jorge Hernandez, Matthew Johnson","doi":"10.1111/vru.13473","DOIUrl":"10.1111/vru.13473","url":null,"abstract":"<p><p>The tibial apophysis is a separate center of ossification in the proximal tibia of skeletally immature dogs. Because it is made of cartilage during development, it is prone to fractures (avulsions) and other tensile-related injuries. One prior veterinary study proposed a classification system for proximal tibial apophyseal fractures, but this study did not include fractures that involved the proximal tibial physis or metaphysis, which have been described in human classification systems. The objectives of the study reported here were (1) to characterize and establish a radiographic grading system of proximal tibial apophyseal fractures in dogs, (2) to investigate the intra- and interobserver agreements of the proposed grading system, and (3) to identify associations between fracture types and patient signalment, surgical fixation, and clinical outcomes. This is a retrospective and observational study where images were assessed twice in a randomized order at least two weeks apart by three observers. The most frequent fracture configurations were type 1 (33/49, 67.3%) and type 5 (13/49, 26.5%), followed by type 4 (2/49, 4%) and type 2 (1/49, 2%). A fracture configuration type 3 was not identified. Dogs with a concurrent fibular fracture were associated with type 4 and 5 tibial avulsion fractures (P < .01). The intraobserver agreement for observers 1 and 2 was kappa ≥0.88, and for observer 3, kappa = 0.63. In conclusion, this study introduces an enhanced classification system for tibial apophyseal fractures in dogs, demonstrating substantial to moderate intraobserver reliability and moderate to modest interobserver agreement.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e13473"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142839598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of midline shift on survival time in dogs with structural brain disease diagnosed on MRI.","authors":"Bethany Guy, Paul Freeman, Sam Khan, Marie-Aude Genain","doi":"10.1111/vru.13450","DOIUrl":"10.1111/vru.13450","url":null,"abstract":"<p><p>The effect of midline shift identified on brain MRI on survival time in dogs with structural brain disease is relatively unknown. This retrospective single-centered cohort study reviewed medical and imaging data of 77 dogs with structural brain lesions evident on MRI. Images were reviewed for the presence of midline shift, brain edema, foramen magnum herniation, and ventriculomegaly. Kaplan-Meier method and Cox regression analysis were undertaken to compare survival between dogs with and without midline shift. Midline shift was present in 40 of 77 (52%) dogs and absent in 37 of 77 (48%). Univariate analysis revealed that dogs with midline shift had a median survival time of 34.5 days (95% CI, 4-108 days) compared with 241 days (95% CI, 133,- days) in dogs without midline shift (hazard ratio = 2.67, 95% CI, 1.5-4.49). Multivariate Cox regression analysis revealed a hazard ratio of 3.6 (95% CI, 1.7-7.6; P-value < .001) for dogs with midline shift. Shorter median survival times remained significant in all groups after segregation based on etiological diagnosis. The significantly shorter survival times observed herein for dogs with midline shifts, regardless of etiologic cause, provide further evidence that midline shift holds value as a negative prognostic factor in diagnostic imaging.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"e13450"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11617613/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142401473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiographic and ultrasonographic findings of seminal vesiculitis with nonmineral stones in a guinea pig: Case report.","authors":"Mariana Giendruczak de Souza, Felipe Augusto Ruiz Sueiro, Luis Felipe Bartholomeu Batalha, Marcus Antônio Rossi Feliciano","doi":"10.1111/vru.13458","DOIUrl":"10.1111/vru.13458","url":null,"abstract":"<p><p>This case report refers to a 1-year-old Guinea pig showing signs of anorexia and antipain posture. On abdominal radiography, five rounded mineral opaque structures were evident in the mid-caudal abdomen. On ultrasound, a right seminal vesicle with a reduction in diameter was observed, containing less echogenic material than the contralateral one, with five oval structures with a hyperechogenic contour and a central hypoechogenic area, forming acoustic shadowing. The left seminal vesicle presented with the usual characteristics. After bilateral vesiculectomy, the patient recovered well, with no further symptoms. The histopathological result was a suppurative/abscessive inflammatory process with an accumulation of proteinaceous material.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"e13458"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonographic features of feline gastrointestinal eosinophilic sclerosing fibroplasia on initial presentation and during follow-up.","authors":"Cristobal Lopez-Jimenez, Petra Černá, Kenjiro Fukushima, Ko Nakashima, Taisuke Nakagawa, Fiona Adam, Nicolas Israeliantz, Andrew Denning, Anna de la Puerta","doi":"10.1111/vru.13479","DOIUrl":"10.1111/vru.13479","url":null,"abstract":"<p><p>The aim of this study is to describe the ultrasonographic features of feline gastrointestinal eosinophilic sclerosing fibroplasia (FGESF) before histological diagnosis and during follow-up after surgical excision and/or medical treatment. This multicentric retrospective case series study includes medical records of cats diagnosed histologically, which had an ultrasound before diagnosis and a minimum of one follow-up ultrasound at least 4 weeks after treatment. Thirty cats were included in the study. The average age was 4.9 years (IQR 3.3-9.3 years). In 25 cases, the mass affected the gastrointestinal system, most commonly the proximal duodenum (36%: 9/25). Three masses originated from the lymph nodes, and two were mesenteric. The most common clinical signs were chronic vomiting, weight loss, and anorexia/reduced appetite. In 25 of 30 (83%) FGESF gastrointestinal cases, ultrasonographically, the lesions generally presented as focal, circumferential, eccentric masses with loss of layering, heterogeneous echogenicity, and hyperechoic areas. Hyperechogenicities in the peritoneum were observed in 63% of the cases, and enlarged lymph nodes (88%) were common. On final follow-up, 55% of the patients had complete resolution of the main lesion, peritoneal changes, and lymphadenopathies ultrasonographically. The disease recurred in 11 of 30 (37%), and progression was reported in 10 of 30 (33%) cases during the follow-up. Initially, 9 of these 10 were diagnosed via nonexcisional biopsy (endoscopic biopsy, Trucut biopsy, surgical incisional biopsy) and treated medically; only one patient had had surgical resection of the mass. Clinical signs at the time of recurrence or progression were inconsistent. Feline gastrointestinal eosinophilic sclerosing fibroplasia shows ultrasonographic features similar to neoplasia but commonly demonstrates hyperechoic areas. Data were assessed for normality and then assessed with appropriate parametric or nonparametric tests accordingly. Progression of the disease at any time during the follow-up was more common in cats treated medically than those treated surgically (P = .02). Clinical signs may or may not be present at the time of ultrasonographic recurrence or progression.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e13479"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142839732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic Resonance Cholangiopancreatography for Cholangiopancreatic Duct Imaging in Dogs.","authors":"Reina Fujiwara, Kie Yamamoto, Masahiro Yamasaki, Koichi Ohno","doi":"10.1111/vru.70008","DOIUrl":"10.1111/vru.70008","url":null,"abstract":"<p><p>Ultrasonography is often used to diagnose biliary diseases in dogs; however, it is difficult to delineate the entire bile and pancreatic ducts. Various imaging techniques for bile and pancreatic ducts have been attempted to overcome this problem. Magnetic resonance cholangiopancreatography (MRCP) is often used to evaluate the bile and pancreatic ducts in humans with obstructive jaundice, but very few reports exist on its usage in dogs. This study was designed as a prospective observational study to assess the feasibility and effectiveness of MRCP for visualizing the bile and pancreatic ducts in nondiseased dogs. Therefore, this study aimed to evaluate the visibility of the bile and pancreatic ducts through MRCP imaging using a 3.0 T-MRI system in dogs with no signs of hepatic, biliary, and pancreatic diseases. The detection rate for each anatomical structure was evaluated, with the highest observed in the gallbladder (100%), followed by the common bile duct (80%), cystic duct (70%), pancreatic ducts in the left and right lobe of the pancreas (70%), left and right hepatic ducts (60%), accessory pancreatic ducts (60%), and major pancreatic duct (40%). MRCP is a promising noninvasive imaging technique that can promptly and accurately visualize bile and pancreatic ducts in dogs without being influenced by the skill of the operator.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e70008"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11742707/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143012767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Case of Prostatic Lymphoma in a Dog with Symptoms of a Uroperitoneum Evaluated with Ultrasonography and Fluoroscopy.","authors":"Ashika Seshadri, Britt Thevelein, Brian Thomas Huber, Michael Perlini","doi":"10.1111/vru.70007","DOIUrl":"10.1111/vru.70007","url":null,"abstract":"<p><p>A 10-year-old neutered male Labrador mix dog presented with a few-day history of stranguria and dysuria. Results of physical examination, laboratory findings, and imaging were consistent with a uroperitoneum and prostatomegaly. Ultrasound showed an enlarged, heterogeneous, and lobular prostate with mineralization, and fluoroscopy showed extravasation of contrast from the prostatic urethra through the prostatic parenchyma into the abdomen. The dog was diagnosed with prostatic lymphoma via cytology and ultimately euthanized. This is the first report of prostatic lymphoma with a concurrent uroperitoneum due to urine leakage from the prostatic urethra through the prostatic parenchyma and capsule into the abdomen.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e70007"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calendar of important events.","authors":"","doi":"10.1111/vru.13461","DOIUrl":"10.1111/vru.13461","url":null,"abstract":"","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics and diagnostic performance of nonechoplanar diffusion-weighted imaging in detecting canine tympanokeratoma (cholesteatoma).","authors":"Charlotte Coeuriot, Hugues Gaillot, Albert Agoulon, Stephane Madec, Guillaume Michel, Pascal Prelaud, Amaury Briand, Emmanuel Bensignor, Vincent Bruet, Jérôme Abadie, Yannick Ruel, Marion Fusellier","doi":"10.1111/vru.13435","DOIUrl":"10.1111/vru.13435","url":null,"abstract":"<p><p>Tympanokeratomas (cholesteatomas) are destructive keratinic masses of the middle ear that are often treated surgically. In humans, nonechoplanar (non-EP) diffusion-weighted (DW) MRI is efficient in diagnosing tympanokeratomas and differentiating recurrent tympanokeratomas from granulation or fibrous tissue after surgery. The objectives of this study were to (1) determine the characteristics of non-EP DWI of histologically or cytologically confirmed canine tympanokeratomas, (2) determine the performance of non-EP DW images, apparent diffusion coefficient (ADC) map and ADC values in discriminating between tympanokeratomas and other causes of otitis media in dogs, and (3) find an optimal ADC cut-off value. Medical records of dogs diagnosed on MRI with otitis media in two veterinary hospitals were retrospectively reviewed. Sixty-two ears with a cytological or pathological diagnosis of either tympanokeratoma (36/62) or nontympanokeratoma otitis media (26/62) were selected. Diffusion-weighted images had an accuracy of 77.4%, a sensitivity of 94.4%, and a specificity of 53.8% for the detection of tympanokeratoma. The ADC value of middle ear content ranged from 517 to 1355.10^-6 mm²/s in tympanokeratoma and from 454 to 2447 × 10^-6 mm²/s in nontympanokeratoma otitis media. An ADC value below 916 × 10^-6 mm²/s interpreted as a tympanokeratoma yielded an accuracy of 78.7%, a sensitivity of 92.6%, and a specificity of 60%. In the study population, combined qualitative analysis of DW images and ADC maps was the most effective method for diagnosing tympanokeratomas with an accuracy of 80.9%, a sensitivity of 92.6%, and a specificity of 65%.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"836-843"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142354789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative MRI for brain lesion diagnosis in dogs and cats: A comprehensive overview.","authors":"Cassandra Céré, Valentina Curcio, Hugo Dorez, Maud Debreuque, Florence Franconi, David Rousseau","doi":"10.1111/vru.13434","DOIUrl":"10.1111/vru.13434","url":null,"abstract":"<p><p>MRI is widely used for the detection and characterization of brain lesions. There is a growing interest in the potential benefits of quantitative MRI (qMRI) in veterinary brain lesion diagnosis. Yet, the use of data processing tools in the veterinary field is not as democratized as for the diagnosis of human brain pathologies. Several reviews have addressed the characterization of brain lesions in cats and dogs. None of them is specifically focused on quantitative MRI data processing techniques for the diagnosis of brain lesions in the veterinary field. This paper aims to provide an overview of the evolution of qMRI on cats and dogs both in the clinical and preclinical fields. We analyze the achievements in the field as well as the remaining challenges in the diffusion of data processing tools for veterinary brain lesions characterization.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"849-864"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142354808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}