The value of time-signal intensity curve of magnetic resonance imaging combined with apparent diffusion coefficient in the evaluation of anal fistula activity
10.3760/cma.j.cn341190-20220312-00209
- VernacularTitle:磁共振时间-信号强度曲线联合ADC值在评估肛瘘活动性方面的价值研究
- Author:
Kaiyan HU
1
;
Junbo CHEN
Author Information
1. 宁波市鄞州第二医院放射科，宁波 315100
- Keywords:
Magnetic resonance imaging;
Diffusion magnetic resonance imaging;
Rectal fistula;
Evaluation studies;
Pathology
- From:
Chinese Journal of Primary Medicine and Pharmacy
2022;29(9):1337-1340
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the value of time-signal intensity curve (TIC) combined with apparent diffusion coefficient (ADC) obtained with 1.5T magnetic resonance imaging in the evaluation of anal fistula activity.Methods:The clinical, imaging, and pathological data of 71 patients with pathologically confirmed anal fistula who received treatment in Ningbo Yinzhou No.2 Hospital from June 2018 to February 2020 were retrospectively analyzed. These patients were divided into active phase group ( n = 42) and remission phase group ( n = 29) according to surgical findings and pathological tissue composition. Pearson's chi-square test was used to analyze TIC types. The ADC value was compared between the two groups. Results:TIC types: In the active phase group, the percentage of patients with type I curve (rising enhancement pattern) and type III curve (washout pattern) was 47.6% (20/42) and 35.7% (15/42) respectively, which were significantly higher than that of patients with type III curve [plateau pattern; 16.7% (7/42)], χ2 = 9.22, 3.94, both P < 0.05). In the remission phase group, the percentage of patients with type I and II curves was 34.5% (10/29) and 55.2% (16/29) respectively, which were significantly higher than that of patients with type III curve [10.3% (3/29), χ2 = 4.86, 13.23, both P < 0.05]. ADC value: ADC value in the active phase group was significantly lower than that in the remission phase group [(0.932 ± 0.074) × 10 -3 mm 2/s vs. (1.164 ± 0.061) × 10 -3 mm 2/s, t = -13.87, P < 0.001). Conclusion:TIC combined with ADC value can effectively evaluate anal fistula activity. It can be used as a routine method for preoperative evaluation and postoperative follow-up for patients with anal fistula.
