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Fast and accurate measurements of T1 using a multi-readout single inversion-recovery sequence

✍ Scribed by P. A. Gowland; M. O. Leach

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
509 KB
Volume
26
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

TOMROP is a multiple readout single inversion‐recovery sequence which may potentially allow the measurement of multi‐exponential T~1~ recoveries in vivo by NMR imaging. It is shown that several important modifications must be made to this sequence to permit T~1~ to be measured accurately and reliably. With these modifications it is possible to measure T~1~ with a mean systematic error of ‐1.5% (‐0.3% for samples with T~1~ > 300 ms), a mean accuracy of 3.1% (2.1% for samples with T~1~ > 300 ms) and a mean repeatability of 1.4% (1.4% for samples with T~1~ > 300 ms), using data collected in 6.4 min from sixteen 128 × 128 matrix images.

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