Veterinary Radiology & Ultrasound最新文献

{"title":"Radiographic, computed tomographic, and histologic characteristics of bone for clinically normal laying hens in a free-range housing system.","authors":"Jeryl Jones, Ahmed Ali, Cerano Harrison, Guillermo Rimoldi","doi":"10.1111/vru.13443","DOIUrl":"10.1111/vru.13443","url":null,"abstract":"<p><p>Laying hens are increasingly being kept in backyard flocks and considered family pets; however, diagnostic imaging characteristics of bone for clinically normal backyard hens are currently limited. This prospective, descriptive study was to describe radiographic, computed tomographic, and histologic characteristics of bone for a group of clinically normal laying hens housed in conditions comparable to those of backyard flocks. Sixteen 60-week-old Lohmann Brown laying hens were included. Hens were housed in a free-range unit with outdoor access at a university research and teaching farm. Hens were defined as clinically normal by the farm manager and a veterinary researcher in laying hen behavior and welfare. Findings from the horizontal beam, left lateral, sternal radiographs (n = 16), postmortem, and whole-body CT scans (n = 4) were recorded by a veterinary radiologist and a research technician. Histologic findings for sternal, femoral, and tibiotarsal bone samples (n = 5) were recorded by a veterinary pathologist. The most frequent radiographic findings for the sternal carina (keel bone) were smoothly marginated concave deviations of the ventral margin and caudal section fractures. Multiple punctate mineral opacities (PMOs) were present in radiographs and CT images for all hens and were involved in the sternal carina and multiple other bones in the axial and appendicular skeleton. No bone abnormalities were identified in any histologic sections where PMOs were radiographically detected. Authors propose that PMOs are normal radiographic and CT findings in the bones of mature, laying hens and may represent temporary calcium reservoirs formed during osteoclastic activities.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"e13443"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11617609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142366717","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":"Ultrasonographic assessment of equine metacarpal cartilage thickness is more accurate than computed tomographic arthrography.","authors":"Seamus Hoey, Ursula Fogarty, Hester McAllister, Antonella Puggioni, Brian Cloak, Hélène Richard, Cliona Skelly, Sheila Laverty","doi":"10.1111/vru.13444","DOIUrl":"10.1111/vru.13444","url":null,"abstract":"<p><p>Articular cartilage can be directly imaged using ultrasonography. The fetlock is a common site of osteochondrosis, with the sagittal ridge of the third metacarpal bone most commonly affected. In osteochondrosis, cartilage thickening may be an initial finding. This postmortem study investigated the ability of ultrasonography to accurately measure the dorsodistal articular cartilage of the third metacarpal bone in young horses, compared to computed tomographic arthrography (CTA) and histological measurements. A total of 33 metacarpophalangeal joints from 18 horses between the ages of 12 days and 10 months old were imaged ultrasonographically and with CTA and sectioned and measured using histology. Imaging measurements were made by two observers. Despite overall weak agreement between ultrasonography and histology, the best agreement was at the distal aspect of the sagittal ridge of the third metacarpal bone. Interobserver agreement at this site was also moderate. CTA showed poor agreement overall with histology. Cartilage thickness decreased with age on ultrasonography, CTA, and histology. In conclusion, ultrasonography is a more accurate imaging modality than CTA in the assessment of cartilage in young horses.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"e13444"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11617610/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142376111","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":"Subdural fluid accumulation with two meningiomas in a cat.","authors":"Mohammad Momin Iqbal, Rachel Lampe, Silke Hecht, Miranda Vieson","doi":"10.1111/vru.13451","DOIUrl":"10.1111/vru.13451","url":null,"abstract":"<p><p>A case of two separate meningiomas with concurrent subdural fluid accumulation is presented. A 13-year-old, male neutered domestic shorthair cat presented with behavior change and progressive neurologic signs localizing to the forebrain. Two extra-axial masses were seen along with a large subdural fluid collection on advanced imaging of the brain. Histology of the lesions was consistent with multiple meningiomas, while analysis of the subdural fluid was consistent with cerebrospinal fluid. A case of multiple feline meningiomas with peritumoral subdural fluid accumulation has not previously been reported.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":" ","pages":"e13451"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142476003","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":"May a Single Presurgical High-Field MRI Sequence Replace Standard Radiographs for TPLO Surgical Planning in Dogs?","authors":"Chiara Mattei, Andrea Pratesi, Marco Bernardini, Swan Specchi","doi":"10.1111/vru.70005","DOIUrl":"https://doi.org/10.1111/vru.70005","url":null,"abstract":"<p><p>Cranial cruciate ligament (CCL) disease causes variable stifle instability assessed by specific clinical tests. Radiographs are performed to measure the tibial plateau angle (TPA) for planning tibial plateau leveling osteotomy (TPLO) surgery. Concomitant damage to other intra-articular structures, for which clinical detection is unreliable, may occur and potentially affect the surgical outcome. Joint assessment during TPLO through instrumented inspection is therefore advised, though it increases the risk of complications. Magnetic resonance imaging offers a noninvasive alternative, adds information about intra- and periarticular structures, and could potentially be used for TPA measurements. This prospective study aimed to (1) assess the correlation between the TPA measured with the standard presurgical radiographs and with a single sagittal intermediate-weighted fat-saturated MRI sequence and (2) compare the surgical findings with the information obtained by the MRI sequence. Twenty-one stifles were included; TPA correlation using radiographs-MRI was available for 17 stifles, and surgery-MRI comparison was available for 18 stifles. A strong significant correlation was identified between the TPA measurements on radiographs-MRI (Pearson correlation coefficient 0.923; p-value <.0001). The sensitivity and specificity of MRI to detect surgically confirmed complete versus partial CCL rupture were 85.7% and 75%, respectively; MRI identified 7 of 8 surgically confirmed injured menisci and detected abnormal signal intensity in 8 of 10 medial menisci and nine caudal cruciate ligaments reported as normal intra-operatively. The MRI additionally identified abnormal subchondral bone signals in nine stifles and muscular hyperintensity in six cases. This presurgical MRI sequence might replace standard radiographs for TPA measurements and can provide information about concomitant joint injuries with potential prognostic impact.</p>","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":"66 1","pages":"e70005"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142955512","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":"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":"https://doi.org/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":"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":"https://doi.org/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}