Evaluation of gold fiducial marker manual localisation for magnetic resonance-only prostate radiotherapy

Radiation Oncology

Table 1 Imaging parameters of the sequences used for gold FM manual localisation: the second column provides the details for the balanced steady-state free precession (bSSFP) sequence, the third column for the radio frequency spoiled gradient-recalled echo (SPGR) sequence acquired right after the bSSFP and the fourth column for the gradient-recalled echo (GRE) sequence acquired at the end of the examination

Imaging parameters	bSSFP	SPGR	GRE
TE₁/(TE₂)/TR [ms]	1.98/3.96	1.4/2.7/4.4	1.4/2.7/4.6
Flip Angle [°]	40	10	10
FOV^a [mm³]	250x250x90	467x467x300	449x449x90
Acquisition Matrix^a	252x234x90	312x314x200	376x376x75
Reconstruction Matrix^a	512x512x90	320x320x200	400x400x75
Reconstructed Voxel^a [mm³]	0.5x0.5x1.0	1.5x1.5x1.5	1.1x1.1x1.2
Bandwidth [Hz/voxel]	945	1078	1142
Readout direction	AP	AP	AP
Acquisition time	4 min 29 s	4 min 1 s	2 min 10 s

^aexpressed in terms of anterior-posterior, right-left and superior-inferior directions
The term FOV refers to field of view, AP to anterior-posterior

ISSN: 1748-717X