退化的狗椎间盘中的MRI信号空隙可能代表矿物化或气体
Yasamin Vali1, Carola Daniel2, Eberhard Ludewig1
1Diagnostic Imaging, Clinical Department of Companion Animals and Horses, University of Veterinary Medicine (Vetmeduni), Vienna, Austria.
概括
狗的MRI上存在的intradiskal信号空隙可以表示气体积累 (真空现象) 或矿化. 虽然MRI强度值没有差异,但信号空隙的位置变化表明有气体,但差异化仍然具有挑战性.
科学领域:
- 兽医辐射学 兽医辐射学
- 狗的脊柱成像 狗的脊柱成像
- 诊断成像 诊断成像 诊断成像
背景情况:
- 准确解释犬脊椎磁共振成像 (MRI) 对于诊断至关重要.
- 磁力共振成像上内盘信号空隙可能是由于气体积累或脊椎间盘 (IVD) 矿化而产生的真空现象 (VP) 的结果.
- 在MRI中,VP和IVD矿化都显示为信号空隙,使解释复杂化.
研究的目的:
- 在狗MRI上评估真空现象和IVD矿化特征.
- 将MRI发现与计算机断层扫描 (CT) 作为黄金标准进行比较.
- 确定MRI能否可靠地区分狗体内IVD中的气体和矿物化.
主要方法:
- 追溯多中心研究分析了在48小时内进行的狗脊柱CT和MRI扫描.
- 包括26项研究 (32个IVD空间) 证实了CT上的IVD矿化或气体.
- 在CT上记录IVD矿化/气体存在,以及MRI信号强度,位置和形状.
主要成果:
- 在VP和矿物化之间MRI像素值没有显著差异 (p = 0.5).
- 与CT相比,MRI上的信号空隙位置存在显著差异,特别是对于VP (p = 0.03).
- 没有特定的MRI特征可靠地区分VP和矿物化.
结论:
- 狗IVD中的MRI T2信号空隙可以表示气体 (VP).
- 仅基于MRI特征来区分VP与矿物化是不可靠的.
- 在狗MRI上,VP和矿化都应该被视为盘内信号空隙的差异诊断.
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