Magnetic resonance imaging findings of carcinoma arising from anal fistula: A retrospective study in a single institution

Table 2 Sequence parameters for magnetic resonance imaging in carcinoma arising from anal fistula

	1.5 T					3.0 T
	T1WI	T2WI	FS-T2WI	DWI	T1-DCE	T1WI	T2WI	FS-T2WI	DWI	T1-DCE
Imaging plane	Axial	Axial/coronal/sagittal	Axial/coronal/sagittal	Axial	Axial/coronal/sagittal	Axial	Axial/coronal/sagittal	Axial/coronal/sagittal	Axial	Axial/coronal/sagittal
TE/TR (ms)	21/658	84/2400	80/2530	95/5800	2.3/4.9	12/970	93/5600	85/3400	76/10900	1.4/4.0
Field of view (mm)	220	220	220	220	220	220	220	220	220	220
Matrix size	256/256	256/256	256/256	256/256	256/256	416/224	416/224	416/224	416/224	416/224
Slice thickness (mm)	4.0	4.0	4.0	5.0	3.0	4.0	4.0	4.0	5.0	3.0
Intersection gap (mm)	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5

T1WI: T1-weighted magnetic resonance imaging; FS-T2WI: Fat-suppressed T2-weighted magnetic resonance imaging; DWI: Diffusion-weighted imaging; DCE: Dynamic contrast enhanced.