Abstract:
:The authors describe an adaptive motion correction method for three-dimensional magnetic resonance (MR) imaging. Three-dimensional imaging offers many advantages over two-dimensional multisection imaging but is susceptible to image corruption due to motion. Thus, it has been of limited use in the imaging of mobile structures, and the relatively long imaging times required have hindered its use in patients who tend to move during imaging. The authors' technique uses interleaved "navigator" echoes to provide a measure of displacement for each image echo in the acquisition and then uses this information to allow correction of the image data. The theory for signal corruption due to motion and the correction scheme that follows from it are presented. This method can produce excellent results when the motion is correctly modeled.
journal_name
Radiologyjournal_title
Radiologyauthors
Korin HW,Felmlee JP,Ehman RL,Riederer SJdoi
10.1148/radiology.177.1.2399320subject
Has Abstractpub_date
1990-10-01 00:00:00pages
217-21issue
1eissn
0033-8419issn
1527-1315journal_volume
177pub_type
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