High-resolution MRI vs multislice spiral CT: Which technique depicts the trabecular bone structure best?
High-resolution MRI vs multislice spiral CT: Which technique depicts the trabecular bone structure best?
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DOI：
10.1007/s00330-002-1695-5
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发表时间：
2003-04-01
影响因子：
5.9
通讯作者：
Majumdar, S
中科院分区：
文献类型：
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作者：
Link, TM;Vieth, V;Majumdar, S
本研究的目的是比较高分辨率磁共振（HRMR）和多层计算机断层扫描（MSCT）图像获得的小梁骨结构参数与相应标本切片的接触x线片确定的参数。39例桡骨远端标本获得高分辨率MR和MSCT图像。利用三维t1加权自旋回波序列，HRMR平面内空间分辨率为0.152 x 0.153 mm(2)，切片厚度为0.9和0.3 mm。对于MSCT，分辨率为0.247 x 0.247 mm(2)，准直为1 mm。使用金刚石锯，从这些标本中获得了117个0.9至1毫米厚的切片，并获得了接触x射线照片。在相应的切片中，测定了类似于骨组织形态学的结构参数。发现MR和ct得出的结构参数与接触x线片得出的结构参数之间存在显著相关性(p
The purpose of this study was to compare trabecular bone structure parameters obtained from high-resolution magnetic resonance (HRMR) and multislice computed tomography (MSCT) images with those determined in contact radiographs from corresponding specimen sections. High-resolution MR and MSCT images were obtained in 39 distal radius specimens. For HRMR the in-plane spatial resolution was 0.152 x 0.153 mm(2) with a slice thickness of 0.9 and 0.3 mm using a 3D T1-weighted spin-echo sequence. For MSCT the resolution was 0.247 x 0.247 mm(2) with a collimation of 1 mm. Using a diamond saw, 117 0.9- to 1-mm-thick sections were obtained from these specimens and contact radiographs were acquired. In the corresponding sections structure parameters analogous to bone histomorphometry were determined. Significant correlations between MR- and CT-derived structure parameters and those derived from the contact radiographs were found (p