Correction of misaligned slices in multi-slice cardiovascular magnetic resonance using slice-to-volume registration.
A popular technique to reduce respiratory motion for cardiovascular magnetic resonance is to perform a multi-slice acquisition in which a patient holds their breath multiple times during the scan. The feasibility of rigid slice-to-volume registration to correct for misalignments of slice stacks in such images due to differing breath-hold positions is explored. Experimental results indicate that slice-to-volume registration can compensate for the typical misalignments expected. Correction of slice misalignment results in anatomically more correct images, as well as improved left ventricular volume measurements. The interstudy reproducibility has also been improved reducing the number of samples needed for cardiac MR studies.
Chandler
Adam G
AG
King's College London, Division of Imaging Sciences, St Thomas' Hospital, London, UK. adam.chandler@ge.com
Pinder
Richard J
RJ
Netsch
Thomas
T
Schnabel
Julia A
JA
Hawkes
David J
DJ
Hill
Derek L G
DL
Razavi
Reza
R
D000465:Algorithms; D016477:Artifacts; D002318:Cardiovascular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D003198:Computer Simulation; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging; D008297:Male; D008955:Models, Cardiovascular; D015588:Observer Variation; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012119:Respiration; D016277:Ventricular Function, Left