MR imaging of subchondral osteonecrosis of the vertebral body after percutaneous laser diskectomy

被引：9
|
作者：
Tonami, H
Kuginuki, M
Kuginuki, Y
Matoba, M
Yokota, H
Higashi, K
Yamamoto, I
Nishijima, Y
机构：
[1] Kanazawa Med Univ, Dept Radiol, Kahoku, Ishikawa 9200293, Japan
[2] Kanazawa Med Univ, Dept Orthopaed, Kahoku, Ishikawa 9200293, Japan
来源：
AMERICAN JOURNAL OF ROENTGENOLOGY | 1999年 / 173卷 / 05期
关键词：
D O I：
10.2214/ajr.173.5.10541125
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
OBJECTIVE. We describe four cases of subchondral osteonecrosis of the vertebral body that occurred after percutaneous laser diskectomy. Follow-up MR imaging after laser intervention showed abnormal findings in the vertebral body immediately adjacent to the site of diskectomy that are consistent with subchondral osteonecrosis. CONCLUSION. MR imaging features of this complication include a wedge-shaped low signal intensity on T1-weighted images, high and low signal intensities on T2-weighted images, and a contrast-enhanced area corresponding to high signal intensity on T2-weighted images. Possible causative mechanisms include thermal injury and photoacoustic shock.
引用
收藏
页码：1383 / 1386
页数：4
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