THE DOUBLE-LINE SIGN OF OSTEONECROSIS - EVALUATION ON CHEMICAL-SHIFT MR IMAGES

被引：20

作者：

DUDA, SH

LANIADO, M

SCHICK, F

CLAUSSEN, CD

机构：

[1] Department of Diagnostic Radiology, Eberhard-Karls-Universität Tübingen

[2] Institute of Physics, Eberhard-Karls-Universität Tübingen

来源：

EUROPEAN JOURNAL OF RADIOLOGY | 1993年 / 16卷 / 03期

关键词：

BONES; MR STUDIES; NECROSIS; HIP;

D O I：

10.1016/0720-048X(93)90081-W

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：

The MR appearance of osteonecrosis was assessed on selective fat and water images to further evaluate the features of the double-line sign of osteonecrosis. Conventional T1- and T2-weighted spin-echo and frequency selective chemical shift images of eight patients with avascular necrosis of the femoral head and three patients with bone infarcts were retrospectively reviewed. Eight of 11 patients showed a double-line sign on T2-weighted spin-echo images. In these cases correlation with selective water images revealed that a chemical shift artifact contributed to the appearance and location of the hyperintense line. The double-line sign was not seen in three patients with radiologically and clinically proven osteonecrosis. It is concluded that chemical shift imaging improves our understanding of the nature of the double-line sign.

引用

页码：233 / 238

页数：6

共 19 条

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