MAGNETIC RESONANCE IMAGING FEATURES OF DISCOSPONDYLITIS IN DOGS
MAGNETIC RESONANCE IMAGING FEATURES OF DISCOSPONDYLITIS IN DOGS
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DOI：
10.1111/j.1740-8261.2010.01756.x
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发表时间：
2011-03-01
影响因子：
1.7
通讯作者：
Goncalves, Rita
中科院分区：
文献类型：
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作者：
Carrera, Ines;Sullivan, Martin;Goncalves, Rita
椎间盘炎的诊断主要基于诊断影像和实验室结果。在此，我们描述了 13 只患有椎间盘炎的狗的磁共振成像 (MRI) 结果。总共有 17 个椎间盘炎部位。 11 只 (81.1%) 的狗有超过 3 周的脊柱疼痛和不同程度的神经系统症状。两只狗出现脊椎疼痛和共济失调4天。对其中九只狗进行了射线检查。在 MR 图像中，总是涉及两个相邻的椎骨终板和相关的椎间盘。所有犬的短tau反转恢复(STIR)图像中受累终板和邻近骨髓均呈T1低信号伴高信号，所有犬的终板和椎旁组织也有对比增强。椎间盘在 T2W 和 STIR 图像中呈高信号，并以 15 个部位（88.2%）的对比度增强为特征。 15 个部位 (88.2%) 存在终板侵蚀，并与邻近的 T2 低信号骨髓有关。在两个部位（11.8%），终板侵蚀没有通过 MR 图像或射线照相检测到。这些部位的椎骨骨髓呈 T2 高信号。硬膜外扩张在 15 个部位（88.2%）的造影后图像中很明显。 15 个部位（88.2%）出现脊髓受压，所有受影响的狗都有神经系统症状。两个部位存在半脱位（11.8%）。 MRI 显示椎间盘炎的特征，并且可以识别感染的确切位置和范围（硬膜外腔和椎旁软组织）。此外，MRI 使早期椎间盘炎的病变更加明显，而放射线照相术可能无法显示这些病变。 (C) 2010 年兽医放射学与超声，卷。 52，第 2 期，2011 年，第 125-131 页。
The diagnosis of discospondylitis is based mainly on diagnostic imaging and laboratory results. Herein, we describe the magnetic resonance imaging (MRI) findings in 13 dogs with confirmed discospondylitis. In total there were 17 sites of discospondylitis. Eleven (81.1%) of the dogs had spinal pain for > 3 weeks and a variable degree of neurologic signs. Two dogs had spinal pain and ataxia for 4 days. Radiographs were available in nine of the dogs. In MR images there was always involvement of two adjacent vertebral endplates and the associated disk. The involved endplates and adjacent marrow were T1-hypointense with hyperintensity in short tau inversion recovery (STIR) images in all dogs, and all dogs also had contrast enhancement of endplates and paravertebral tissues. The intervertebral disks were hyperintense in T2W and STIR images and characterized by contrast enhancement in 15 sites (88.2%). Endplate erosion was present in 15 sites (88.2%) and was associated with T2-hypointense bone marrow adjacent to it. In two sites (11.8%) endplate erosion was not MR images or radiographically. The vertebral bone marrow in these sites was T2-hyperintense. Epidural extension was conspicuous in postcontrast images at 15 sites (88.2%). Spinal cord compression was present at 15 sites (88.2%), and all affected dogs had neurologic signs. Subluxation was present in two sites (11.8%). MRI shows characteristic features of discospondylitis, and it allows the recognition of the exact location and extension (to the epidural space and paravertebral soft tissues) of the infection. Furthermore, MRI increases lesion conspicuity in early discospondylitis that may not be visualized by radiography. (C) 2010 Veterinary Radiology & Ultrasound, Vol. 52, No. 2, 2011, pp 125-131.