Jung Hee-Sun, Jee Won-Hee, McCauley Thomas R, Ha Kee-Yong, Choi Kyu-Ho
Departments of Diagnostic Radiology, Catholic University of Korea, 505 Banpo-dong, Seocho-gu, Seoul 137-701, South Korea.
Radiographics. 2003 Jan-Feb;23(1):179-87. doi: 10.1148/rg.231025043.
A study was performed to determine which magnetic resonance (MR) imaging findings are useful in discrimination between metastatic compression fractures and acute osteoporotic compression fractures of the spine. The MR imaging findings in 27 patients with metastatic compression fractures and 55 patients with acute osteoporotic compression fractures were compared by using the chi(2) test. MR imaging findings suggestive of metastatic compression fractures were as follows: a convex posterior border of the vertebral body, abnormal signal intensity of the pedicle or posterior element, an epidural mass, an encasing epidural mass, a focal paraspinal mass, and other spinal metastases. MR imaging findings suggestive of acute osteoporotic compression fractures were as follows: a low-signal-intensity band on T1- and T2-weighted images, spared normal bone marrow signal intensity of the vertebral body, retropulsion of a posterior bone fragment, and multiple compression fractures. The signal intensity on fast spin-echo T2-weighted images obtained without fat suppression played little role in distinguishing between metastatic compression fractures and acute osteoporotic compression fractures.
一项研究旨在确定哪些磁共振（MR）成像结果有助于鉴别脊柱转移性压缩骨折和急性骨质疏松性压缩骨折。采用卡方检验比较了27例转移性压缩骨折患者和55例急性骨质疏松性压缩骨折患者的MR成像结果。提示转移性压缩骨折的MR成像结果如下：椎体后缘凸出、椎弓根或后部结构信号强度异常、硬膜外肿块、包绕性硬膜外肿块、局灶性椎旁肿块以及其他脊柱转移瘤。提示急性骨质疏松性压缩骨折的MR成像结果如下：T1加权和T2加权图像上的低信号带、椎体正常骨髓信号强度未受影响、后部骨碎片后凸以及多发压缩骨折。未进行脂肪抑制的快速自旋回波T2加权图像上的信号强度在鉴别转移性压缩骨折和急性骨质疏松性压缩骨折方面作用不大。
