Peter Siegler1, Rachel W.-C. Chan2,
Elizabeth A. Ramsay1, Donald B. Plewes1
1Imaging Research, Sunnybrook Health
Sciences Centre, Toronto, Ontario, Canada; 2Department of Medical
Biophysics, University of Toronto, Toronto, Ontario, Canada
Dynamic
contrast-enhanced breast MRI shows a high sensitivity for breast cancer but
is commonly done in prone position which complicates its use for image-aided
strategies. Recently, supine unilateral breast MRI with compensation for respiratory
motion was successfully implemented. However, standard Cartesian sampling has
no isotropic spatial resolution, which is desirable for image-aided
applications. Here, 3D projection reconstruction based on multidimensional
golden means was tested for use in supine breast MRI. The technique allowed
post-processed compensation for respiratory motion, which is intrinsic in a
supine position of the patient, without the need to choose any
motion-compensation settings prior to the scan.