Accurate T1 determination from inversion recovery images: Application to human brain at 4 Tesla
✍ Scribed by Seong-Gi Kim; Xiaoping Hu; Kamil Ugurbil
- Book ID
- 102955877
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 506 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
It is well known that the signal polarity in inversion‐recovery (IR) images changes with inversion time, complicating the determination of T~1~ To avoid this problem, a simple subtraction method is implemented. In this method, k‐space data of the longest inversion time are subtracted from the corresponding data of each inversion time. This subtraction yields IR images of same polarity, making it straightforward to derive T~1~ using a standard fitting routine. Phantom T~1~ studies with IR Turbo‐FLASH images demonstrate that this technique is robust and accurate. Four Tesla T~1~ values of the human brain were also determined by this method to demonstrate its in vivo utility.