利用化学位移成像：使用反相位图像定位 MR 正常阑尾。

Taking advantage of chemical shift imaging: using opposed-phase images to locate the normal appendix on MR.

机构信息

Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.

出版信息

Clin Imaging. 2011 Nov-Dec;35(6):424-30. doi: 10.1016/j.clinimag.2010.10.004.

DOI:10.1016/j.clinimag.2010.10.004

PMID:22040785

Abstract

Multiple sequences of 50 consecutive adult pelvic MRI exams were retrospectively reviewed by two radiologists to determine if opposed-phase T1 gradient echo imaging can assist in locating the normal appendix on pelvic MRI. If the appendix was visualized, it was always seen on the T2 sequence, except for one exam. The opposed-phase sequence had the second highest visualization rate, and the appendix was identified the least on the post-gadolinium sequence. The presence of a "button nose" sign was also assessed and was present in one third of cases.

摘要

回顾性分析了 50 例连续成人盆腔 MRI 检查的多组序列，由两位放射科医生确定反相位 T1 梯度回波成像是否有助于在盆腔 MRI 上定位正常阑尾。如果阑尾可见，除了一次检查外，它总是在 T2 序列上看到。反相位序列的可视化率第二高，而在钆后序列上识别阑尾的情况最少。还评估了“纽扣鼻”征的存在情况，三分之一的病例存在该征。