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Effects of slice selection and diffusion on T2 measurement

✍ Scribed by S. T. S. Wong; M. S. Roos

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
362 KB
Volume
5
Category
Article
ISSN
0740-3194

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✦ Synopsis

This study examines slice selection and diffusion as sources of systematic error in Tz estimates obtained from imaging experiments. The selective refocusing pulses in a multislice, two-echo, spin-warp experiment cause slice profiles of sequential echoes to change in shape. This results in bias in T2 images calculated from the two-echo data set. A method to correct the bias is presented. The effect of diffusion on T2 images obtained with typical two-echo imaging sequences was found to be negligible. 0 1987 Academic press, Inc.

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