. Author manuscript; available in PMC: 2022 May 1.

Published in final edited form as: Magn Reson Imaging. 2021 Feb 4;78:7–17. doi: 10.1016/j.mri.2021.01.004

Table 1:

Summary of MR Imaging Parameters

	3D T₁w TSE				3D TOF
	Low-resolution		High-resolution		3D TOF

Field of view^a	230x230x210mm³		230x210x180mm³		105x180x190mm³
Voxel^a (Acq./Rec.)	1.5x1.5x1.5mm³/0.72x0.72x0.75mm³		0.5x0.5x0.5mm³/0.24x0.24x0.25mm³		1.0x0.5x0.5mm³/0.5x0.25x0.25mm³
Flip angle	90°				18°
Echo train length^b	5	40	30	40	N/A
VFA design^c	SNR prior		PSF prior	SNR prior	N/A
Echo spacing/time^d	3ms		5ms		3.45ms
Repetition time	800ms				20ms
Driven-equilibrium	Anti-drive				N/A
Fat suppression	Spectral adiabatic inversion recovery				No
Orientation	Sagittal				Axial
Acceleration	CS-SENSE x5		CS-SENSE x6		SENSE(RL) x2.2 Halfscan(RL) 0.75
Scan time	7:39	0:58	8:50	6:38	6:37

The imaging field of view and voxel size is represented in a format of FHxAPxRL.

The echo train length for turbo spin echo (TSE) scan only considers the number of acquired echoes, and the skipped start-up echoes at the beginning are not counted.

The SNR and PSF prior used in this VFA design category correspond to SNR and PSF priority VFA design approach, respectively. The PSF priority approach is the default VFA design on our scanner that tries to achieve an ideal/flat PSF (the first 11 echoes) given the minimum flip angle (50 degree) and start to decay once the calculated flip angle over a prescribed threshold (120 degree).

Echo spacing and echo time correspond to TSE and time-of-flight (TOF) scan respectively. TE was not a fixed value for TSE scans since different number of skipped echoes were investigated.