Jian Wang1,
Jian-ping Lu1, Tom W J Scheenen2
1Radiology, Changhai Hospital, Shanghai,
China; 2Radiology, Radboud University Medical Centre Nijmegen,
Nijmegen, Gelderland, Netherlands
The
quality of data acquisition and post-processing of proton MRSI with and
without an endorectal coil at 1.5T and 3.0T was assessed with the use of a
prostate phantom. With fixed spine and body array surface coils and an
endorectal coil, 3D MRSI was performed repeatedly with 1) all coils, 2) only
endorectal coil and 3) only surface coils. The choline + creatine/citrate
(CC/C) ratio of each voxel was semi-automatically calculated and compared
between different coil use and field strengths. Significant differences in
CC/C existed between different field strengths and different locations within
the phantom, when these locations had large differences in magnetic field
homogeneity.