Nathan Scott White1, Josh Kuperman2,
Beth Ripley2, Ajit Shankaranarayanan3, Eric Han3,
Anders Dale2,4
1Dept. of Cognitive Science, University
of California, San Diego, La Jolla, CA, United States; 2Dept. of
Radiology, University of California, San Diego, La Jolla, CA, United States; 3Global
Applied Science Lab, GE Healthcare, Menlo Park, CA, United States; 4Dept.
of Neuroscience, University of California, San Diego, La Jolla, CA, United
States
We
present an extension to the real-time 3D "PROspective MOtion
correction" (PROMO) framework for online correction of between-scan
motion in 3D sequences through automatic slice plane positioning. Initial
results demonstrate an intra-subject alignment precision of better than 1
mm/deg, despite initial position/landmark differences of over 13 mm. Given
current scanner and computer hardware capabilities, the alignment procedure
can be done in about a second or two, making it suitable to be integrated as
part of a routine automatic pre-scan procedure.