Torisu Shidow, Washizu Makoto, Hasegawa Daisuke, Orima Hiromitsu
Laboratory of Veterinary Medical Teaching Hospital, Nippon Veterinary and Animal Science University, 1-7-1, Kyonan-cho, Musasino-shi, Tokyo 180-8602, Japan.
Vet Radiol Ultrasound. 2005 Nov-Dec;46(6):447-51. doi: 10.1111/j.1740-8261.2005.00082.x.
Animals with a portosystemic shunt (PSS) often have neurologic abnormalities. Diagnostic imaging, including brain magnetic resonance (MR) imaging, is not performed routinely in these animals. In this study, brain MR images were obtained in 13 dogs and three cats with a PSS, and in 15 dogs and five cats that were neurologically normal and used as controls. All animals with a PSS had widened sulci. In addition, 10 out of 13 dogs with a PSS and one out of three cats with a PSS had hyperintense focal areas in the lentiform nuclei on T1-weighted (T1W) images, which did not enhance after intravenous gadolinium. Following surgical correction of the PSS, MR imaging examinations were repeated in one dog and one cat. The hyperintensity of the lentiform nuclei had decreased. This study indicates that MR imaging findings of widened sulci and hyperintensity of the lentiform nuclei on T1W images may be found in dogs and cats with a PSS.
患有门体分流（PSS）的动物通常有神经学异常。包括脑磁共振（MR）成像在内的诊断性影像学检查在这些动物中并非常规进行。在本研究中，对13只患有PSS的犬和3只患有PSS的猫，以及15只神经学正常的犬和5只神经学正常的猫（用作对照）进行了脑MR成像检查。所有患有PSS的动物均有脑沟增宽。此外，13只患有PSS的犬中有10只，3只患有PSS的猫中有1只，在T1加权（T1W）图像上的豆状核有高信号灶，静脉注射钆后无强化。在对PSS进行手术矫正后，对1只犬和1只猫重复进行了MR成像检查。豆状核的高信号有所降低。本研究表明，在患有PSS的犬和猫中可能会发现T1W图像上脑沟增宽和豆状核高信号的MR成像表现。
