Detection rates, sensitivity, and specificity of multislice spiral computed tomography, 1.5T and 3.0T magnetic resonance imaging in anal fistula diagnosis

doi:10.4240/wjgs.v18.i4.115864

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World Journal of Gastrointestinal Surgery

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1948-9366

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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Surg. Apr 27, 2026; 18(4): 115864
Published online Apr 27, 2026. doi: 10.4240/wjgs.v18.i4.115864

Table 1 Comparison of sequence parameters between 1.5T magnetic resonance imaging and 3.0T magnetic resonance imaging

Parameter	Sequence	1.5T MRI	3.0T MRI
TR (milliseconds)	Sagittal T2WI	4000	6000
	Coronal T2WI	4050	6500
	Axial T2WI	4400	6700
	Axial T1WI	680	600
	Axial T2WI FS	5500	8500
TE (milliseconds)	Sagittal T2WI	120	100
	Coronal T2WI	80	102
	Axial T2WI	100	102
	Axial T1WI	16	20
	Axial T2WI FS	90	110
FOV (mm)	Sagittal T2WI	280 × 280	300 × 300
	Coronal T2WI	280 × 320	240 × 240
	Axial T2WI	240 × 300	240 × 240
	Axial T1WI	280 × 280	240 × 240
	Axial T2WI FS	280 × 300	240 × 240
Slice thickness (mm)	Sagittal T2WI	4.0	4.0
	Coronal T2WI	4.0	3.5
	Axial T2WI	4.0	3.5
	Axial T1WI	4.0	4.0
	Axial T2WI FS	4.0	3.5
Inter-slice gap (mm)	Sagittal T2WI	1.0	0.4
	Coronal T2WI	1.0	0.4
	Axial T2WI	1.0	0.4
	Axial T1WI	1.0	0.35
	Axial T2WI FS	1.0	0.35
Number of slices	All sequences	24	25

TR: Repetition time; TE: Echo time; FOV: Field of view; T2WI: T2-weighted imaging; FS: Fat suppression; MRI: Magnetic resonance imaging.

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Citation: Tang JJ, Wang TH, Jia XF. Detection rates, sensitivity, and specificity of multislice spiral computed tomography, 1.5T and 3.0T magnetic resonance imaging in anal fistula diagnosis. World J Gastrointest Surg 2026; 18(4): 115864
URL: https://www.wjgnet.com/1948-9366/full/v18/i4/115864.htm
DOI: https://dx.doi.org/10.4240/wjgs.v18.i4.115864

Tang JJ, Wang TH, Jia XF. Detection rates, sensitivity, and specificity of multislice spiral computed tomography, 1.5T and 3.0T magnetic resonance imaging in anal fistula diagnosis. World J Gastrointest Surg 2026; 18(4): 115864 [DOI: 10.4240/wjgs.v18.i4.115864]

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