Jung Yechan, Jeong Eunseok, Park Sangjun, Jeong Jimo, Choi Ul Soo, Kim Min-Su, Kim Namsoo, Lee Kichang
Veterinary Clinical Sciences, College of Veterinary Medicine, Chonbuk National University, Iksan 54596, Korea.
J Vet Sci. 2016 Sep 30;17(3):331-5. doi: 10.4142/jvs.2016.17.3.331.
This study was conducted to provide normal reference features for canine and feline anal sacs using ultrasound, low-field magnetic resonance imaging (MRI) and radiograph contrast as diagnostic imaging tools. A total of ten clinically normal beagle dogs and eight clinically normally cats were included. General radiography with contrast, ultrasonography and low-field MRI scans were performed. The visualization of anal sacs, which are located at distinct sites in dogs and cats, is possible with a contrast study on radiography. Most surfaces of the anal sacs tissue, occasionally appearing as a hyperechoic thin line, were surrounded by the hypoechoic external sphincter muscle on ultrasonography. The normal anal sac contents of dogs and cats had variable echogenicity. Signals of anal sac contents on low-field MRI varied in cats and dogs, and contrast medium using T1-weighted images enhanced the anal sac walls more obviously than that on ultrasonography. In conclusion, this study provides the normal features of anal sacs from dogs and cats on diagnostic imaging. Further studies including anal sac evaluation are expected to investigate disease conditions.
本研究旨在使用超声、低场磁共振成像（MRI）和造影X线摄影作为诊断成像工具，提供犬猫肛门囊的正常参考特征。总共纳入了10只临床健康的比格犬和8只临床健康的猫。进行了造影X线摄影、超声检查和低场MRI扫描。通过造影X线摄影可以显示位于犬猫不同部位的肛门囊。在超声检查中，肛门囊组织的大部分表面偶尔表现为高回声细线，被低回声的外括约肌肌肉包围。犬猫正常肛门囊内容物的回声性各不相同。低场MRI上犬猫肛门囊内容物的信号有所不同，使用T1加权图像的造影剂比超声检查更明显地增强了肛门囊壁。总之，本研究提供了犬猫肛门囊在诊断成像上的正常特征。预计包括肛门囊评估在内的进一步研究将调查疾病情况。
