利用磁敏感加权成像检测正常脊髓静脉

Detection of normal spinal veins by using susceptibility-weighted imaging.

作者信息

Ishizaka Kinya, Kudo Kohsuke, Fujima Noriyuki, Zaitsu Yuri, Yazu Rie, Tha Khin Khin, Terae Satoshi, Haacke E Mark, Sasaki Makoto, Shirato Hiroki

机构信息

Department of Radiology, Hokkaido University Hospital, Sapporo, Japan.

出版信息

J Magn Reson Imaging. 2010 Jan;31(1):32-8. doi: 10.1002/jmri.21989.

DOI:10.1002/jmri.21989

PMID:20027570

Abstract

PURPOSE

To evaluate the visualization of the spinal veins using susceptibility-weighted imaging (SWI).

MATERIALS AND METHODS

A 1.5-T magnet equipped with a spine matrix coil was used. Axial SWI scans of 20 healthy volunteers were obtained with a three-dimensional fast low-angle shot (3D-FLASH) sequence. Maximum intensity projection (MIP) of the phase images were reconstructed and five MIP images (at the levels of T11, T11/12, T12, T12/L1, and L1) were selected for the evaluation. The anterior median vein (AMV), posterior median vein (PMV), anterior radiculomedullary vein (ARV), posterior radiculomedullary vein (PRV), and sulcal vein (SV) were evaluated using a 4-grade scale (0, none; 1, weak; 2, moderate; and 3, prominent).

RESULTS

The AMV was detected in all the subjects (100%). The detection rates of the other veins were lower: PMV, 65%; right ARV, 45%; left ARV, 15%; right PRV, 10%; left PRV, 30%; and SV, 0%. The average scores for AMV, PMV, right ARV, left ARV, right PRV, left PRV, and SV were 0.98, 0.24, 0.20, 0.08, 0.08, 0.14, and 0, respectively.

CONCLUSION

SWI of the spine is feasible. The extrinsic spinal veins can be visualized by SWI without using contrast materials.

摘要

目的

利用磁敏感加权成像（SWI）评估脊髓静脉的显影情况。

材料与方法

使用配备脊柱矩阵线圈的1.5-T磁共振成像仪。采用三维快速低角度激发（3D-FLASH）序列对20名健康志愿者进行轴向SWI扫描。重建相位图像的最大强度投影（MIP），并选取5幅MIP图像（T11、T11/12、T12、T12/L1和L1水平）进行评估。使用4级评分标准（0，未显示；1，显示不清；2，显示中等；3，显示清晰）对前正中静脉（AMV）、后正中静脉（PMV）、前根髓静脉（ARV）、后根髓静脉（PRV）和沟静脉（SV）进行评估。

结果

所有受试者（100%）均检测到AMV。其他静脉的检出率较低：PMV为65%；右侧ARV为45%；左侧ARV为15%；右侧PRV为10%；左侧PRV为30%；SV为0%。AMV、PMV、右侧ARV、左侧ARV、右侧PRV、左侧PRV和SV的平均评分分别为0.98、0.24、0.20、0.08、0.08、0.14和0。