Abstract
We have developed a multislice protocol for quantitative T1 measurements in which the processing time and the acquisition time are under 2 minutes each for a complete brain study of 15 slices. An echoplanar, inversion- recovery image sequence is designed to collect data suitable for analysis using a linear regression algorithm. The precision is approximately twice the noise to signal ratio of the images. The accuracy of the protocol is better than 1% for T1 in the range 0-2 seconds and deviates slightly for longer T1 values. The protocol is insensitive to B1 field values. If needed, the data can be postprocessed using a slow, nonlinear algorithm to give an accuracy of less than 1% and a precision of approximately the noise to signal ratio throughout a range of T1 values from 0 to 4 seconds. (C) 2000 Wiley-Liss, Inc.
Original language | English (US) |
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Pages (from-to) | 360-367 |
Number of pages | 8 |
Journal | Journal of Magnetic Resonance Imaging |
Volume | 11 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2000 |
Keywords
- Canavan's disease
- Normal children
- Regression analysis
- Relaxation times
- T1
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging