Fast MR Imaging of the Paediatric Abdomen with CAIPIRINHA-Accelerated T1w 3D FLASH and with High-Resolution T2w HASTE: A Study on Image Quality

Table 1

Typical MRI scan parameters, as used in this study.

	Standard; 2D FLASH	CAIPIRINHA; 3D FLASH	T1w TSE; triggered	T2w TIRM	T2w HASTE FS
TR, ms	86.0	6.1	2000	8290	1000
TE, ms	3.8	3.0	2.5	84	102
Flip angle, °	90	10	15	180	160
Scan orientation	Transverse	Transverse	Transverse	Coronal	Coronal
In-plane resolution, mm	1.3 × 1.3	1.0 × 1.0	0.7 × 0.7	0.8 × 0.8	1.0 × 1.0
Slice thickness, mm	5	3–5	4	4	4
FOV, mm	250	250	350	350	350
iPAT	None	Acceleration; factor = 4	None	Acceleration; factor = 2	Acceleration; factor = 2
Breath-hold	22 s	15 s	Respiratory-triggered	20 s	21 s
Scan time	4 min 3 s	15 s	6 min 10 s	3 min 5 s	42 s

TR: repetition time, TE: echo time, FOV: field of view, and iPAT: Integrated Parallel Acquisition Techniques.