Table 2.

Median values and ranges of MRI parameters at 3 T found in the literature.

MRI technique	Number of studies	TR (ms)	TE (ms)	Flip angle (°)	Spatial resolution (mm)	3D FOV (mm)	PLD (ms)	Label duration (ms)	GRAPPA/SENSE (number of studies)	SMS (number of studies)
BOLD GE-EPI	118	2,000 [66.4, 3,000]	30 [20, 50]	85 [40, 90]	3.44 × 3.44 × 4 [1.72 × 1.72 × 2, 4 × 4 × 8]	225 × 220 × 126 [192 × 150 × 18, 256 × 256 × 195]	-	-	2 [1.8, 3] (14)	3 [2, 6] (2)
pCASL GE-EPI	16	4,000 [3,000, 4,500]	14 [10, 20]	90 [90, 90]	3 × 3 × 6 [3 × 3 × 4, 7 × 7 × 7]	240 × 240 × 119 [220 × 220 × 54, 240 × 240 × 135]	1,525 [900, 2,000]	1,650 [1,500, 1,650]	2.5 [2, 2.5] (8)	(0)
Dual-echo pCASL/BOLD GE-EPI	22	4,000 [3,000, 4,500]	TE1 = 10 [8.4, 16]. TE2 = 30 [25, 47]	90 [90, 90]	3.44 × 3.44 × 5 [3 × 3 × 3.9, 4.5 × 4.5 × 7]	240 × 240 × 116.1 [192 × 192 × 87, 256 × 256 × 132]	1,220 [600, 1,868]	1,650 [1,200, 2,000]	2 [2, 2.3] (10)	(0)

PLD, post-labelling delay; TR, repetition time; TE, echo time; FOV, field-of-view; GE, gradient-echo; EPI, echo-planar imaging; SMS, simultaneous multi-slice.