使用低翻转角稳态自由进动序列进行单次屏气T1测量。

Single breath-hold T1 measurement using low flip angle TrueFISP.

作者信息

Bokacheva L, Huang A J, Chen Q, Oesingmann N, Storey P, Rusinek H, Lee V S

机构信息

Department of Radiology, New York University School of Medicine, New York, New York 10016, USA.

出版信息

Magn Reson Med. 2006 May;55(5):1186-90. doi: 10.1002/mrm.20845.

DOI:10.1002/mrm.20845

PMID:16572392

Abstract

A method for estimating T1 using a single breath-hold, segmented, inversion recovery prepared, true fast imaging with steady-state precession (sIR-TrueFISP) acquisition at low flip angle (FA) was implemented in this study. T1 values measured by sIR-TrueFISP technique in a Gd-DTPA-doped water phantom and the human brain and abdomen of healthy volunteers were compared with the results of the standard IR fast spin echo (FSE) technique. A good correlation between the two methods was observed (R2=0.999 in the phantom, and R2=0.943 in the brain and abdominal tissues). The T1 values of the tissues agreed well with published results. sIR-TrueFISP enables fast measurements of T1 to be obtained within a single breath-hold with good accuracy, which is particularly important for chest and abdominal imaging.

摘要

本研究实施了一种在低翻转角（FA）下使用单次屏气、分段、反转恢复准备的稳态进动真快速成像（sIR-TrueFISP）采集来估计T1的方法。将sIR-TrueFISP技术在钆喷酸葡胺掺杂水模体以及健康志愿者的人脑和腹部中测量的T1值与标准反转恢复快速自旋回波（FSE）技术的结果进行比较。观察到两种方法之间具有良好的相关性（在模体中R2 = 0.999，在脑和腹部组织中R2 = 0.943）。组织的T1值与已发表结果吻合良好。sIR-TrueFISP能够在单次屏气内快速且准确地测量T1，这对于胸部和腹部成像尤为重要。