Veterinary Radiology & Ultrasound最新文献_第2页

Diffusion-Weighted Imaging of Intracranial Ring-Enhancing Lesions. 颅内环形增强病变的弥散加权成像。

IF 1.5 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-09-01 DOI: 10.1111/vru.70085

Adrien M Dupanloup, Craig S Brown, Karen M Vernau, Ehren M McLarty, Peter J Dickinson

{"title":"Diffusion-Weighted Imaging of Intracranial Ring-Enhancing Lesions.","authors":"Adrien M Dupanloup, Craig S Brown, Karen M Vernau, Ehren M McLarty, Peter J Dickinson","doi":"10.1111/vru.70085","DOIUrl":"https://doi.org/10.1111/vru.70085","url":null,"abstract":"Ring-enhancing magnetic resonance imaging (MRI) lesions result from various diseases, including infection, neoplasia, inflammation, and vascular etiologies. Differentiation based on standard MRI sequences can be challenging. This study aims to compare the apparent diffusion coefficient (ADC) values of intracranial ring-enhancing lesions of infectious etiology with ring-enhancing lesions caused by other etiologies. Records were reviewed for MRI studies with diffusion-weighted imaging (DWI) and post-gadolinium T1-weighted ring-enhancing lesions with a definitive histopathological diagnosis or a microbiological diagnosis of brain infection. ADC maps were generated, and regions of interest were selected to evaluate ADC values of ring-enhancing lesions. Normalized ADC values (rADC) were calculated using ADC values from lesional and contralateral brain regions of interest (rADC = ADClesion/ADCCB). A total of 69 cases met the inclusion criteria (68 dogs, 1 cat). Median (range) rADC was significantly lower for intraparenchymal bacterial abscesses [0.54 (0.19-0.82)] compared to ring-enhancing gliomas [1.7 (0.80-3.9); p = 0.0003) and non-infectious inflammatory lesions [1.7 (0.74-3.3); p = 0.024], but not significantly different compared to intraparenchymal hemorrhage [0.54 (0.33-0.87); p > 0.99]. Extraparenchymal bacterial empyema and intraparenchymal fungal abscesses did not exhibit apparent restricted diffusion, with median rADC (range) of 2.8 (1.3-3.4) and 1.2 (1.1-1.8), respectively. With exclusion of hemorrhagic lesions, an rADC of 0.65 had a specificity/sensitivity of 98%/78% for intraparenchymal bacterial abscess. Apparent restricted diffusion on DWI and ADC is a useful marker for identifying intraparenchymal bacterial abscesses among ring-enhancing lesions. However, extraparenchymal bacterial empyema and fungal abscesses may not exhibit this feature.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 5","pages":"e70085"},"PeriodicalIF":1.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145076009","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}

引用次数: 0

Computed Tomographic Appearance of Intraocular Silicone Oil in a Dog. 犬眼内硅油的ct表现。

IF 1.5 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-09-01 DOI: 10.1111/vru.70061

Elodie Huguet, Mara Wanderer, Carmen M H Colitz, Victoria Cicchirillo, Regina Hayburn

引用次数: 0

Computed Tomographic Findings of Diaphragmatic Well-differentiated Liposarcoma in a Dog. 犬横膈膜高分化脂肪肉瘤的ct表现。

IF 1.5 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-09-01 DOI: 10.1111/vru.70082

Jeongyun Jeong, Jupill Chang, Seunghee Lee, Soeun An, Kyuchang Kim, Min Su Lee, Ji Young Yhee, Jaehwan Kim, Kidong Eom

引用次数: 0

Accuracy of Computed Tomographic Signs for the Detection of Severe Adhesions in Dogs with Abdominal Masses. 犬腹部肿块严重粘连的ct征象检测的准确性。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-07-01 DOI: 10.1111/vru.70058

Lauren A O'Mara, Anthony J Fischetti, Daniel I Spector, Joel G Weltman

{"title":"Accuracy of Computed Tomographic Signs for the Detection of Severe Adhesions in Dogs with Abdominal Masses.","authors":"Lauren A O'Mara, Anthony J Fischetti, Daniel I Spector, Joel G Weltman","doi":"10.1111/vru.70058","DOIUrl":"https://doi.org/10.1111/vru.70058","url":null,"abstract":"The preoperative detection of abdominal adhesions could influence surgical planning; however, imaging features of abdominal adhesions are minimally described in the veterinary literature. The purpose of this retrospective, diagnostic case-control study is to determine the preoperative CT imaging signs associated with surgically-confirmed, severe adhesions in dogs with abdominal masses. Dogs undergoing contrast-enhanced CT and surgery for abdominal masses from 2012 to 2022 were included in the study. Surgical records were evaluated and retrospectively reviewed by a board-certified surgeon to determine the severity of adhesions as pertaining to surgical planning and/or complications. The CTs of dogs with severe adhesions were mixed with age and weight-matched controls for review by a board-certified veterinary radiologist. A review of the literature on both people and animals determined the imaging features tested. The signs tested were fat stranding, fat stranding with vascular enhancement or vascular crowding, loss of fat planes (properitoneal fat sign), focal peritoneal enhancement with or without an alteration in visceral contour, loculation of fluid, and enhancing peritoneal bands. The presence of fat stranding (sensitivity 60.5; specificity 72.1), fat stranding with vascular enhancement (sensitivity 53.5, specificity 81.4), and loculation of peritoneal effusion (sensitivity 25.5; specificity 95.3) were significantly associated with the presence of adhesions at surgery. Loculation of peritoneal effusion surrounding the nondependent margin of an abdominal mass can alert imagers to the presence of severe adhesions. The absence of any of the signs tested does not exclude the presence of adhesions, especially in the retroperitoneum.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 4","pages":"e70058"},"PeriodicalIF":1.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144709020","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}

引用次数: 0

Diagnostic Utility of Triple-Phase CT: Differentiating Benign Liver Lesions from Hepatocellular Carcinoma in Dogs. 三期CT的诊断价值：鉴别犬肝良性病变与肝细胞癌。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-07-01 DOI: 10.1111/vru.70060

Joy Einwaller, Jan Wennemuth

{"title":"Diagnostic Utility of Triple-Phase CT: Differentiating Benign Liver Lesions from Hepatocellular Carcinoma in Dogs.","authors":"Joy Einwaller, Jan Wennemuth","doi":"10.1111/vru.70060","DOIUrl":"https://doi.org/10.1111/vru.70060","url":null,"abstract":"This study aimed to identify triple-phase computed tomographic features that can predict the histotype of focal liver lesions in dogs. The analysis included dogs with histopathologically diagnosed nodular hyperplasia (NH, n = 3), hepatocellular adenoma (HCA, n = 32), or hepatocellular carcinoma (HCC, n = 59). Consistent with previous studies (Kutara et al. 2014; Burti et al. 2021), significant differences were observed in maximum transverse diameter (p = .008) and enhancement patterns (p = .0031) among the lesion types. HCCs were significantly larger and exhibited heterogeneous enhancement compared with benign lesions. In the portal venous phase, benign lesions were significantly hyperattenuating (p < .001) with a mean HU of 175.3 (±38.8), while HCCs were significantly hypoattenuating (p < .001) with a mean HU of 123.9 (±28.8), relative to the surrounding liver parenchyma (mean HU 151.6 ± 17.7). In the delayed phase, benign lesions became isoattenuating (mean HU 117.2 ± 10.7) to the liver parenchyma (mean HU 122.6 ± 8.4), whereas HCCs remained hypoattenuating (mean HU 100.3 ± 12.7). A maximal transverse diameter greater than 9.8 cm (AUC = 0.73), a heterogeneous enhancement pattern in all three phases (AUC = 0.7), and a portal venous phase HU below 136 (AUC = 0.87) were significantly associated with HCC, achieving an accuracy of 89% and a positive predictive value of 91%. The study suggests that lesion HU in the portal venous phase, alongside lesion size and enhancement pattern, are strong predictors of HCC in dogs, with specific cutoff values serving as reliable indicators.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 4","pages":"e70060"},"PeriodicalIF":1.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643575","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}

引用次数: 0

Computed Tomographic and Clinical Findings in Domestic Rabbits (Oryctolagus cuniculus domesticus) with Pulmonary Emphysema. 家兔肺气肿的计算机断层扫描及临床表现。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-07-01 DOI: 10.1111/vru.70063

Athinodoros Athinodorou, Nicolas Israeliantz, Jenna Richardson, Dario Costanza, Jorge Del Pozo, Tobias Schwarz

{"title":"Computed Tomographic and Clinical Findings in Domestic Rabbits (Oryctolagus cuniculus domesticus) with Pulmonary Emphysema.","authors":"Athinodoros Athinodorou, Nicolas Israeliantz, Jenna Richardson, Dario Costanza, Jorge Del Pozo, Tobias Schwarz","doi":"10.1111/vru.70063","DOIUrl":"10.1111/vru.70063","url":null,"abstract":"Pulmonary emphysema (PE) is a poorly understood condition in rabbits. This retrospective case-control study investigated the CT and clinical findings of rabbits with PE. Institutional archive review identified 724 thoracic CT studies of 529 rabbits, including 76 PE-positive studies of 59/529 rabbits. Twenty-five PE-negative cases were selected randomly as a control group. The mean age of affected rabbits was 9 years (range 5-13 years). Cranial lung lobes were more commonly affected (p < .01). The X-ray attenuation in Hounsfield units (HU) of the emphysematous lung areas (median -905 HU) was significantly lower than in nonemphysematous lung lobes of the case (median -667 HU) and control group (median -652 HU). There was significantly lower X-ray attenuation in peripheral and bullous emphysema than in diffuse emphysema. There was no statistical correlation between clinical lower respiratory signs and PE presence. However, the small portion (n = 6, 10.2%) of affected rabbits with severe respiratory signs, such as open-mouth breathing and cyanotic mucous membranes, all had advanced PE and poor outcome. Secondary changes attributable to PE included pathologic rib fractures in 3 (5.1%) and bulla rupture leading to pneumothorax in 2 (3.4%) rabbits. Of the 15 rabbits with repeat examinations, PE was progressive in 12 (80%) and static in 3 (20%). PE is a common condition in rabbits that is readily detectable with CT. The progressive nature of PE should be considered when detected in asymptomatic rabbits. In rabbits with severe lower respiratory signs, PE should be considered as a potential cause.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 4","pages":"e70063"},"PeriodicalIF":1.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265035/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643574","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}

引用次数: 0

Ultrasonographic Appearance of the Deferent Ducts in Dogs without Genitourinary Disease. 无泌尿生殖系统疾病犬不同导管的超声表现。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-07-01 DOI: 10.1111/vru.70055

Anna Palomares, Yvonne Espada, Mauricio Tobón Restrepo, Sonia González-Rellán, Rosa Novellas

{"title":"Ultrasonographic Appearance of the Deferent Ducts in Dogs without Genitourinary Disease.","authors":"Anna Palomares, Yvonne Espada, Mauricio Tobón Restrepo, Sonia González-Rellán, Rosa Novellas","doi":"10.1111/vru.70055","DOIUrl":"10.1111/vru.70055","url":null,"abstract":"In veterinary medicine, deferent ducts are described as being visible on ultrasound only when pathologically enlarged. Abnormal ultrasonographic enlargement of the deferent ducts has primarily been described secondary to infectious and neoplastic diseases; however, no studies have evaluated the normal ultrasonographic features of these structures. This prospective observational study aimed to describe the ultrasonographic appearance of deferent ducts and assess ultrasound reliability in their identification in intact and neutered dogs without genitourinary disease. The study aimed also to compare ultrasonographic measurements with postmortem anatomical ones and to investigate the relationship between duct identification, size, and intrinsic factors of the patient. The study consisted of ex vivo and in vivo phases in which ultrasonographic assessments of the ducts were conducted at the level of the prostate in longitudinal (location 1) and transverse (location 2) planes and the inguinal canal (location 3) and scrotal region (location 4) in longitudinal planes. A total of 80 deferent ducts were included. The ducts were visible as paired tubular hypoechoic structures delimited by two thin hyperechoic lines, with a target-like appearance on the transverse plane. The deferent ducts were identified in 97.5% of our population in at least one location, with locations 1 and 2 being the most reliable ones. Identification of the ducts was independent of reproductive status; however, reproductive status appeared to be the most significant factor influencing deferent duct size, with neutered dogs exhibiting smaller deferent ducts.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 4","pages":"e70055"},"PeriodicalIF":1.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12137774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144226802","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}

引用次数: 0

Prevalence and Radiographic Appearance of the Os Clitoridis (Baubellum) in Female Domesticated Ferrets (Mustela putorius furo). 雌性家养雪貂阴蒂阴囊病（Baubellum）的发病率和放射学表现。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-07-01 DOI: 10.1111/vru.70068

Annalisa Wager, Silke Hecht, Emi Knafo, Danielle Tarbert, Robert Reed, Xiaocun Sun

引用次数: 0

Computed Tomographic Evidence for United Airway Disease in Cats: Concurrent Middle Ear, Upper and Lower Airway Disease. 猫联合气道疾病的计算机断层扫描证据：并发中耳、上、下气道疾病。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-05-01 DOI: 10.1111/vru.70032

Bas Wetzels, Gert Ter Haar, Erik den Hertog, Susanne Boroffka

{"title":"Computed Tomographic Evidence for United Airway Disease in Cats: Concurrent Middle Ear, Upper and Lower Airway Disease.","authors":"Bas Wetzels, Gert Ter Haar, Erik den Hertog, Susanne Boroffka","doi":"10.1111/vru.70032","DOIUrl":"https://doi.org/10.1111/vru.70032","url":null,"abstract":"United airway disease (UAD) expresses an association between inflammatory upper and lower airway disease in humans but has not been reported in clinically affected feline patients. The purpose of this retrospective case series study is to determine the prevalence of CT changes consistent with feline lower airway disease (FLAD; feline asthma/chronic bronchitis) in cats with inflammatory upper airway disease including otitis media. Included were 549 cats with clinical complaints of inflammatory upper airway disease and/or otitis media and CT examinations of the head, neck, and thorax. CT examinations were reviewed for changes consistent with inflammatory upper airway disease (rhinitis, nasopharyngitis, otitis media) and FLAD. Odds ratios for FLAD were calculated for cats with rhinitis, nasopharyngitis, or otitis media and cats with a combination of rhinitis and otitis media. Rhinitis was diagnosed in 348 cats, nasopharyngitis in 253 cats, otitis media in 287 cats, and FLAD in 338 cats. The odds ratio for the concurrent presence of FLAD in cats with rhinitis, nasopharyngitis, or otitis media were 1.62, 1.46, and 1.46, respectively. The odds ratio for FLAD for cats with a combination of rhinitis and otitis media was 2.27. Otitis media was found to be an independent risk factor for FLAD. CT evidence of FLAD is common in cats with inflammatory upper airway disease, and especially in cats with a combination of rhinitis and otitis media. These findings strongly suggest the presence of United Airway Disease in cats.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 3","pages":"e70032"},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144014747","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}

引用次数: 0

Correction to "Right Cranial Lung Lobe Torsion in a Domestic Ferret (Mustela putorius furo)". “家貂右颅肺叶扭转一例”的矫正。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2025-05-01 DOI: 10.1111/vru.70028

引用次数: 0