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Real-time motion detection in spiral MRI using navigators

✍ Scribed by Todd S. Sachs; Craig H. Meyer; Bob S. Hu; Jim Kohli; Dwight G. Nishimura; Albert Macovski

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
691 KB
Volume
32
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A technique has been developed whereby motion can be detected in real time during the acquisition of data. This enables the implementation of an algorithm to accept or reject and reacquire data during a scan. Frames of data with motion are rejected and reacquired on the fly so that by the end of the scan, a complete motion‐free data set has been acquired. The algorithm has been implemented on several different types of sequences. Preliminary in vivo studies indicate that motion artifacts are dramatically reduced.

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