✦ LIBER ✦

A k-Space Analysis of MR Tagging

✍ Scribed by William S Kerwin; Jerry L Prince

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 245 KB
Volume: 142
Category: Article
ISSN: 1090-7807
DOI: 10.1006/jmre.1999.1946

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✦ Synopsis

We present a k-space approximation that directly relates a pulse sequence to its residual pattern of z-directed magnetization M z , in a manner akin to the k-space approximation for small tip-angle excitation. Our approximation is particularly useful for the analysis and design of tagging sequences, in which M z is the important quantity-as opposed to the transverse magnetization components M x and M y considered in selective excitation. We demonstrate that our approximation provides new insights into tagging, can be used to design novel tag patterns, and, more generally, may be applied to selective presaturation sequences for purposes other than tagging.

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