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T1 quantification with inversion recovery TrueFISP

✍ Scribed by Klaus Scheffler; Jürgen Hennig

Book ID
102529155
Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
208 KB
Volume
45
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A snapshot FLASH sequence can be used to acquire the time course of longitudinal magnetization during its recovery after a single inversion pulse. However, excitation pulses disturb the exponential recovery of longitudinal magnetization and may produce systematic errors in T~1~ estimations. In this context the possibility of using the TrueFISP sequence to detect the recovery of longitudinal magnetization for quantitative T~1~ measurements was examined. Experiments were performed on different Gd‐doped water phantoms and on humans. T~1~ values derived from inversion recovery TrueFISP were in excellent agreement with the single‐point method even for flip angles up to 50°. In terms of T~1~ accuracy and SNR, the proposed method seems to be superior to the conventional inversion recovery snapshot FLASH technique. Magn Reson Med 45:720–723, 2001. © 2001 Wiley‐Liss, Inc.

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