Veterinary Radiology & Ultrasound最新文献_第5页

Intradural-extramedullary inflammatory pseudotumour of the cervical spinal cord of a dog. 一只狗的颈脊髓硬膜外炎性假瘤。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-09-01 Epub Date: 2024-06-09 DOI: 10.1111/vru.13384

Henry Mendo Reyes, Erica Fiorentino, Kaspar Matiasek, Marika Menchetti

引用次数: 0

Imaging diagnosis: Disseminated hemangiosarcoma in a Welsh pony. 影像诊断：一匹威尔士小马患上了播散性血管肉瘤。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-09-01 Epub Date: 2024-05-24 DOI: 10.1111/vru.13386

Brianna Farber, Rebecca Urion, Eric T Hostnik

引用次数: 0

Effect of gadolinium contrast medium administration on susceptibility-weighted imaging of the canine brain. 使用钆造影剂对犬大脑感度加权成像的影响

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-09-01 Epub Date: 2024-06-17 DOI: 10.1111/vru.13395

Martina Mugnai, Edoardo Auriemma, Barbara Contiero, Delia Franchini, Eric Zini, Federica Tirrito

{"title":"Effect of gadolinium contrast medium administration on susceptibility-weighted imaging of the canine brain.","authors":"Martina Mugnai, Edoardo Auriemma, Barbara Contiero, Delia Franchini, Eric Zini, Federica Tirrito","doi":"10.1111/vru.13395","DOIUrl":"10.1111/vru.13395","url":null,"abstract":"Susceptibility-weighted imaging (SWI) is a gradient echo (GE) MRI sequence. Intravenous administration of gadolinium (Gd) may affect GE images, but its effect on SWI has not been investigated in veterinary medicine. This cross-sectional prospective study evaluated the effects of Gd on SWI. Seventy-one dogs that underwent brain MRI were included and distributed in two groups. Susceptibility-weighted imaging was performed pre- and postcontrast, obtained immediately after Gd administration (Group A: n = 35) or delayed (Group B: n = 36; median delay 19.9 min). Pre- and post-Gd SWI were analyzed for signal intensity changes in the lentiform nuclei of gray matter (GM), in the centrum semiovale of white matter (WM), and in brain lesions. No difference in GM signal intensity was identified in either group between pre- and postcontrast images (Group A, P = .395; Group B, P = .895). In group A, WM signal intensity was lower in pre- than post-Gd sequences (P = .019). Brain lesions were identified in 30/71 (41%) cases; the signal intensity of intracranial lesions was significantly lower in pre- than post-Gd images in both groups (P < .001); the number of lesions influenced the difference in signal intensity in group B (P = .043). Susceptibility artifacts did not change in appearance between pre- and postcontrast images in either the normal brain or in parenchymal lesions. In conclusion, Gd may modify the signal intensity of WM and brain lesions but does not affect the susceptibility artifacts and does not interfere with SWI interpretation.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141331912","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 anatomic variations of the phrenicoabdominal veins in cats. 猫膈腹静脉的计算机断层扫描解剖变异。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-09-01 Epub Date: 2024-07-09 DOI: 10.1111/vru.13408

Dario Nappo, Chiara Massarenti, Maria Elena Andreis, Eric Zini, Giuseppe Lacava, Silvia Rabba, Edoardo Auriemma

{"title":"Computed tomographic anatomic variations of the phrenicoabdominal veins in cats.","authors":"Dario Nappo, Chiara Massarenti, Maria Elena Andreis, Eric Zini, Giuseppe Lacava, Silvia Rabba, Edoardo Auriemma","doi":"10.1111/vru.13408","DOIUrl":"10.1111/vru.13408","url":null,"abstract":"There are no published reports describing the anatomic variations of the phrenicoabdominal (PhAbd) veins in cats. The aim of this study was to evaluate the anatomic variations of the PhAbd veins in cats without adrenal disease. This is an anatomic study. Abdominal CT images of cats acquired from January 2021 to February 2023 were retrospectively reviewed. Inclusion criteria were the presence of pre- and postcontrast CT images of the abdomen and the absence of any abdominal diseases that compromise the left and right PhAbd veins visualization. A total of 128 cats were included. Three different vascular anatomic variations were found in the distal pericaval segment of the left phrenicoabdominal (LPhAbd) vein. In the first type, found in 65 cases (50.8%), the LPhAbd vein drained directly into the caudal vena cava. In the second type defined IIa, found in 25 cases (19.5%), the LPhAbd vein drained into the distal third of the left renal vein, less than 5 mm from its opening into the caudal vena cava. In the third type defined IIb, found in 38 cases (29.7%), the LPhAbd vein drained into the distal third of the left renal vein, more than 5 mm from its opening into the caudal vena cava. The right phrenicoabdominal vein had a consistent path and drained into the caudal vena cava in all cases. The knowledge of these vascular variations is expected to help the surgeon during adrenalectomy due to masses with vascular invasion in cats.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141559899","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

Use of cardiac gated computed tomography in the diagnosis of a rare congenital cardiovascular anomaly in an adult alpaca. 利用心脏门控计算机断层扫描诊断成年羊驼罕见的先天性心血管异常。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-26 DOI: 10.1111/vru.13424

Zoe Friel, Devon England, Christiane Loehr, Lauren Newsom

引用次数: 0

Intranasal Linguatula serrata (tongue worm) in canids and vulpids can be detected using computed tomography. 使用计算机断层扫描可以检测犬科动物和秃鹫科动物的鼻内舌丝虫（Linguatula serrata）。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-25 DOI: 10.1111/vru.13428

Alice Birckhead, David Jenkins, Shokoofeh Shamsi, Richard Malik, Ann Carstens

{"title":"Intranasal Linguatula serrata (tongue worm) in canids and vulpids can be detected using computed tomography.","authors":"Alice Birckhead, David Jenkins, Shokoofeh Shamsi, Richard Malik, Ann Carstens","doi":"10.1111/vru.13428","DOIUrl":"https://doi.org/10.1111/vru.13428","url":null,"abstract":"Linguatula serrata (\"tongue worm\") is a zoonotic intranasal parasite found globally in wild dogs, free-ranging dogs, some domestic dogs, and vulpids. Since there are no sensitive tests currently available, infections are underdiagnosed. This is a pilot observational prospective study aimed at determining whether nasal linguatulosis can be diagnosed using CT. The secondary aims were to evaluate radiography, rhinoscopy, and nasal egg swabs as methods in the diagnosis of tongue worms. Fifty-four wild canids and three vulpids euthanased by gunshot were sourced from pest-control officers. Cadaver heads were subjected to helical CT examination, nasal-swabbed for tongue worm eggs, and necropsied. Radiographs and rhinoscopy were performed on cadavers suspected to be infected based on preliminary CT examination. Tongue worms were retrieved at necropsy in 25 dogs and one fox. CT findings in animals with no nasal cavity ballistic damage were reviewed in six infected dogs and one infected fox. Adult female tongue worms were identified in 4 of 6 dogs and 1 of 1 fox as long, tubular, slightly heterogeneously attenuating structures in the mid to caudal nasal cavities. They were not clearly visible in CT scans when surrounded by nasal fluid, and small parasites (male and immature females) were not discernible. Radiographic findings were mild and nonspecific. One tongue worm was detected in 1 of 12 dogs examined rhinoscopically. Tongue worm eggs were found in swabs from 7 of 25 dogs. While small tongue worms could not be detected with CT, CT proved to be a useful diagnostic method for visualizing adult female tongue worms.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142056647","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 features of suspected arterial pseudoaneurysm in the head and neck of four dogs. 四只狗头颈部疑似动脉假性动脉瘤的计算机断层扫描特征。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-25 DOI: 10.1111/vru.13427

Goncalo N V Ramalho, Sophie Dennison-Gibby, Sumari Dancer, Kelly Blacklock, Ofer Cherbinsky, Aaron Schechter, Tobias Schwarz

{"title":"Computed tomographic features of suspected arterial pseudoaneurysm in the head and neck of four dogs.","authors":"Goncalo N V Ramalho, Sophie Dennison-Gibby, Sumari Dancer, Kelly Blacklock, Ofer Cherbinsky, Aaron Schechter, Tobias Schwarz","doi":"10.1111/vru.13427","DOIUrl":"https://doi.org/10.1111/vru.13427","url":null,"abstract":"Computed tomography is a valuable diagnostic technique in the clinical work-up of dogs with oropharyngeal trauma and bleeding. Traumatic extravasation can manifest as a pseudoaneurysm. A pseudoaneurysm is an extraluminal accumulation of blood that is contained by the adventitia layer or neighboring tissues. The purpose of this retrospective, multicenter, observational case series study was to describe the CT features in dogs with presumed oropharyngeal arterial pseudoaneurysm and its potential association with trauma. Imaging archives were searched for canine patients with head and neck CT studies showing visible extravasation of contrast-enhanced blood contained by soft tissue structures. Medical records of these patients were reviewed for oropharyngeal bleeding or trauma and reported. Four dogs met the inclusion criteria. CT findings included a well-defined, confined area of vascular contrast enhancement adjacent to the common carotid artery or its branches. The mean contrast enhancement in the corresponding artery and pseudoaneurysm lesion was similar, suggesting that these lesions represent active arterial extravasation. Four-dimensional CT was performed in one case and demonstrated contrast medium leaking from an artery and being contained by adjacent soft tissue structures. All dogs had a history and imaging findings consistent with oropharyngeal bleeding and trauma. Arterial pseudoaneurysm should be considered as a differential diagnosis in dogs with oral trauma and CT features of a well-defined, periarterial, strongly contrast-enhancing lesion.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142056646","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

Intraosseous contrast administration for coelomic computed tomography angiography in green iguanas (Iguana iguana): Preliminary findings show promise as an alternative to the intravenous route. 在绿鬣蜥（Iguana iguana）腹腔计算机断层扫描血管造影中使用骨内造影剂：初步研究结果表明，这种方法有望替代静脉注射。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-24 DOI: 10.1111/vru.13416

Maëva C M Erickson, Karine P Gendron, Laura A B Aguilar, Jeanette Wyneken, Gregory B Walth, Nicole L Gottdenker, Stephen J Divers

{"title":"Intraosseous contrast administration for coelomic computed tomography angiography in green iguanas (Iguana iguana): Preliminary findings show promise as an alternative to the intravenous route.","authors":"Maëva C M Erickson, Karine P Gendron, Laura A B Aguilar, Jeanette Wyneken, Gregory B Walth, Nicole L Gottdenker, Stephen J Divers","doi":"10.1111/vru.13416","DOIUrl":"https://doi.org/10.1111/vru.13416","url":null,"abstract":"Computed tomography is commonly used to evaluate the reptile coelom. One challenge in the acquisition of contrast-enhanced CT studies in reptiles is the difficulty in placing intravenous catheters due to the poor conspicuity of peripheral vessels. To overcome these limitations, intraosseous catheterization of the long bones (humerus, femur, and tibia) can be used. The purpose of this prospective study was to assess the feasibility and diagnostic value of contrast-enhanced CT of the coelom using a femoral intraosseous route for contrast administration. Twelve healthy juvenile green iguanas were enrolled. In 9 of 12 iguanas, vascular phases were obtained, providing strong, homogeneous enhancement of the arterial and venous tree concurrently. In these nine cases, Phase #1, acquired 60 s after beginning the injection of contrast medium, provided maximal contrast between the hepatic parenchyma and hepatic vasculature. In the remaining three cases, injection failure resulted from intracortical placement of the catheter tip. Histological examination of the liver, kidneys, and femur was performed to determine the pathomorphological correlates of the CT findings; in a third of patients, some degree of contrast-induced renal toxicity was documented, which in mammalians shows potential for reversibility. Four iguanas had iatrogenic structural damage to the femoral growth plates attributed to intraosseous catheter placement. A femoral intraosseous route can be used in green iguanas for iodinated contrast medium administration for CT angiography. For the greatest contrast between coelomic organs and vascular structures, at least one postcontrast acquisition 60 s after initiation of contrast administration is recommended when using this technique.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047270","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 characteristics of anatomical variations of external and internal jugular veins in dogs. 狗颈外静脉和颈内静脉解剖变异的计算机断层扫描特征。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-19 DOI: 10.1111/vru.13419

Seng Fong Lau, Brooke Dubansky, Chin-Chi Liu, Nathalie Rademacher

{"title":"Computed tomographic characteristics of anatomical variations of external and internal jugular veins in dogs.","authors":"Seng Fong Lau, Brooke Dubansky, Chin-Chi Liu, Nathalie Rademacher","doi":"10.1111/vru.13419","DOIUrl":"https://doi.org/10.1111/vru.13419","url":null,"abstract":"The external jugular vein (EJV) has been commonly used for clinical procedures in veterinary medicine, while the internal jugular vein (IJV) has been used mainly for research. Limited literature regarding anatomical variants in both EJV and IJV is available. The objectives of this descriptive retrospective study were to identify the number of dogs with variations of the jugular veins in canine patients undergoing CT of the head and neck and characterize these variations. Of 1000 dogs, 193 dogs (19.3%) had anatomical variations. Six types of anatomical variations were identified. The most common Type I was the absence of the linguofacial vein (72.0%, n = 139), with the lingual, facial, and maxillary veins entering the EJV at a common branching point. Type II described a variable course of the EJV and IJV, which in some dogs resulted in the absence of the EJV (14.0%, n = 27). Type III was a variable anastomotic loop formed by the linguofacial or maxillary vein cranial or at the junction of the EJV (4.2%, n = 8). In Type IV, the EJV was either suspected to be aplastic or markedly reduced in diameter compared with the contralateral side just distal to its formation (3.6%, n = 7). Type V was found in only six dogs (3.1%) with unilateral differences in the diameter of the IJV. Six of 193 dogs had a combination of more than one variation (Type VI, 3.1%). Type I was significantly observed more frequently in meso- and dolichocephalic breeds. Type II was significantly observed more frequently in brachycephalic breeds.","PeriodicalId":23581,"journal":{"name":"Veterinary Radiology & Ultrasound","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005404","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

Initial treatment experience obtained with the real-time predictive motion tracking radiotherapy platform Synchrony: A pilot study. 使用实时预测运动跟踪放疗平台 Synchrony 获得的初步治疗经验：一项试点研究。

IF 1.3 2区农林科学

Veterinary Radiology & Ultrasound Pub Date : 2024-08-19 DOI: 10.1111/vru.13421

Nathaniel Van Asselt, Neil Christensen

引用次数: 0