High-resolution direct magnetic resonance imaging fistulography with hydrogen peroxide for diagnosing anorectal fistula: A preliminary retrospective study

doi:10.4329/wjr.v17.i1.101221

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Jan 28, 2025 (publication date) through Apr 15, 2025

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World Journal of Radiology

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1949-8470

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Study

World J Radiol. Jan 28, 2025; 17(1): 101221
Published online Jan 28, 2025. doi: 10.4329/wjr.v17.i1.101221

Table 4 Comparison of findings from different methods used for fistula-in-ano

Observational indicator	Evaluation methods	True positive	False positive	False negative	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Surgical outcome
Internal opening	Physical examination	72	36	81	47.06 (72/153)	63.64 (63/99)	66.67 (72/108)	43.75 (63/144)	153
	TPUS	99	27	54	64.71 (99/153)	72.73 (72/99)	78.57 (99/126)	57.14 (72/126)	153
	Low-spatial-resolution MRI	120	12	33	78.43 (120/153)	87.88 (87/99)	90.91 (120/132)	72.50 (87/120)	153
	High-resolution direct HPMRI fistulography	147	9	6	96.08 (147/153)	90.91 (90/99)	94.23 (147/156)	90.91 (90/96)	153
Fistula track	Physical examination	36	27	126	22.22 (36/162)	66.67 (54/81)	57.14 (36/63)	30.00 (54/180)	162
	TPUS	99	18	63	61.11 (99/162)	77.78 (63/81)	84.62 (99/117)	50.00 (63/126)	162
	Low-spatial-resolution MRI	120	9	42	74.07 (120/162)	88.89 (72/81)	93.02 (120/129)	63.16 (72/114)	162
	High-resolution direct HPMRI fistulography	150	6	12	92.59 (150/162)	92.59 (75/81)	96.15 (150/156)	86.21 (75/87)	162
Abscess	Physical examination	18	36	36	33.33 (18/54)	76.47 (117/153)	33.33 (18/54)	76.47 (117/153)	54
	TPUS	136	27	18	66.67 (36/54)	82.35 (126/153)	57.14 (36/63)	87.50 (126/144)	54
	Low-spatial-resolution MRI	45	9	9	83.33 (45/54)	94.12 (144/153)	83.33 (45/54)	94.12 (144/153)	54
	High-resolution direct HPMRI fistulography	54	6	0	100 (54/54)	96.08 (147/153)	90.00 (54/60)	100 (147/147)	54

HP: Hydrogen peroxide; MRI: Magnetic resonance imaging; TPUS: Trans-perineal ultrasonography.

Citation: Chang CC, Qiao LH, Zhang ZQ, Tian X, Zhang Y, Cheng WW, Wang X, Yang Q. High-resolution direct magnetic resonance imaging fistulography with hydrogen peroxide for diagnosing anorectal fistula: A preliminary retrospective study. World J Radiol 2025; 17(1): 101221
URL: https://www.wjgnet.com/1949-8470/full/v17/i1/101221.htm
DOI: https://dx.doi.org/10.4329/wjr.v17.i1.101221