TABLE 3:

MRI Characteristics

Study	Magnet Strength (T)	Vendor	Machine	T2-Weighted Imaging FOV(cm)	T2-Weighted Imaging Matrix Size	In-Plane Voxel Size (mm)	EMVI Evaluation Sequence	Antispasmodic Agent
Brown et al. [15]	1.5	GE Healthcare	Horizon Advantage	16 × 16	256 × 256	0.6250	T2-weighted imaging	No
Smith et al. [10]	1.5	NA	NA	16 × 16	256 × 256	0.6250	T2-weighted imaging	NA
Rollvén et al. [9]	1.5	Philips Healthcare	Intera	37.5 × 26.2	NA	0.5–0.8	T2-weighted imaging	Yes
Sohn et al. [25]	3	Siemens Healthcare	Magnetom TimTrio	19.9 × 9.9–25 × 25	320 × 320–448 × 314	0.796	T2-weighted imaging	Yes
Chand et al. [12]	1.5	NA	NA	16 × 16	256 × 256	0.6250	T2-weighted imaging	NA
Hunter et al. [26]	1.5	Siemens Healthcare	Magnetom Avanto	17 × 17–42 × 42	256 × 256–320 × 320	0.66–1.3	T2-weighted imaging	Yes
Jhaveri et al. [27]	1.5 or 3	Siemens Healthcare	Avanto, Verio	20 × 20	350 × 263	0.6	T2-weighted imaging + contrast-enhanced MRI	Yes
Liu et al. [13]	3	GE Healthcare	Signa Excite	16 × 16	320 × 256	0.6	T2-weighted imaging	No
Yu et al. [28]	3	Siemens Healthcare	Magnetom TimTrio	22 × 22	384 × 296	0.57–0.74	T2-weighted imaging	NA
Dam et al. [29]	1.5	Philips Healthcare	Ingenia	NA	NA	NA	T2-weighted imaging + DWI	NA
Nerad et al. [16]	1.5	Philips Healthcare	Ingenia	39 × 39	392 × 392	1	T2-weighted imaging + DWI + contrast-enhanced MRI	Yes
El-Kady et al. [30]	1.5	Siemens Healthcare, Philips Healthcare, GE Healthcare	Magnetom Avanto, Signa HDxt, Gyroscan Intera	NA	NA	NA	T2-weighted imaging + DWI	NA
Lee et al. [31]	1.5 or 3	Philips Healthcare, GE Healthcare	Achieva, HDx, Signa	24 × 24	300 × 300	0.8	T2-weighted imaging	NA
Poulsen et al. [17]	1.5	NA	NA	16 × 16	256 × 256	0.6250	T2-weighted imaging	NA

Note—EMVI = extramural venous invasion, NA = not available.