Computed tomography and magnetic resonance imaging features of lipid-rich neuroendocrine tumors of the pancreas

Table 1 Magnetic resonance imaging sequences and parameters

	TR (ms)	TE (ms)	FA (°)	Thickness (mm)	ETL	Matrix Size	FOV (mm)
Chemical-shift MRI
2D dual GRE with 1.5-T system (n = 15)	128-133	2.2-2.4, 4.4-4.8	70-75	4-7	-	134-205 × 256	320-380
2D dual GRE with 3.0-T system (n = 4)	197-238	1.2, 2.4	60	5-5.5	-	192-200 × 192-200	350-360
3D dual GRE with 3.0-T system (n = 10)	5.8	1.2, 2.4	10	2.5	-	192 × 256	350
Fat-suppressed T2-weighted imaging
Breath-hold half-Fourier single-shot TSE with 1.5-T system (n = 9)	Infinity	90	90	4-7	138	256 × 256	320-380
Respiratory-triggered multi-shot TSE with 1.5-T system (n = 6)	Respiratory intervals	80-85	90	5-6	15	256 × 336	320-350
Respiratory-triggered multi-shot TSE with 3.0-T system (n = 14)	Respiratory intervals	70-80	90	4-6	11-18	256-384 × 320-512	320-360

CT: Computed tomography; MRI: Magnetic resonance imaging; GRE: Gradient-echo; TSE: Turbo spin-echo; TR: Repetition time; TE: Echo time; FA: Flip angle; ETL: Echo train length; FOV: Field of view.