TY - GEN
T1 - 3-D optimization of magnetic field shimming in MRI by convex programming approach
AU - Attardo, Elia A.
AU - Cerquera, Manuel Perez
AU - Andriulli, Francesco P.
AU - Vecchi, Giuseppe
PY - 2012
Y1 - 2012
N2 - Spatial uniformity of amplitude and polarization of the RF magnetic field, associate to SAR limitation constitute a crucial problem in the design of advanced Magnetic Resonance Imaging (MRI) equipment. As a result, the issue of shimming the RF magnetic field (i.e. optimizing its space uniformity) has received considerable attention in the recent literature. Recently these authors have introduced and tested in 2D a specialized optimization for this task, where constraints on minimum field, on polarization and SAR limitation have been enforced in an essentially-convex manner by using a convex-under-constraint optimization. Here we discuss the impact of a full 3D scenario, outlining the perceived limits of achievable performance.
AB - Spatial uniformity of amplitude and polarization of the RF magnetic field, associate to SAR limitation constitute a crucial problem in the design of advanced Magnetic Resonance Imaging (MRI) equipment. As a result, the issue of shimming the RF magnetic field (i.e. optimizing its space uniformity) has received considerable attention in the recent literature. Recently these authors have introduced and tested in 2D a specialized optimization for this task, where constraints on minimum field, on polarization and SAR limitation have been enforced in an essentially-convex manner by using a convex-under-constraint optimization. Here we discuss the impact of a full 3D scenario, outlining the perceived limits of achievable performance.
UR - http://www.scopus.com/inward/record.url?scp=84870485109&partnerID=8YFLogxK
U2 - 10.1109/APS.2012.6349162
DO - 10.1109/APS.2012.6349162
M3 - Conference contribution
AN - SCOPUS:84870485109
SN - 9781467304627
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
BT - 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings
T2 - Joint 2012 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, APSURSI 2012
Y2 - 8 July 2012 through 14 July 2012
ER -