Clinical Application of MRI Three-dimensional Visualization Reconstruction in the Evaluation of Complex Anal Fistula
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摘要:
目的 探讨MRI三维可视化(three-dimensional visualization,3DV)重建技术在复杂性肛瘘评估中的临床应用价值。 方法 回顾性收集手术证实为复杂性肛瘘46例患者的术前MRI影像资料。根据影像图像分为2D-MRI组和3DV-MRI组,分别观察内口、瘘管及脓腔的检出数量,以及根据李克特量表评分标准从临床比较关注的4个方面对2组图像进行评分。 结果 2组分别检出内口64个(检出率81.0%)、70个(88.6%),瘘管82条(85.4%)、84条(87.5%),脓腔33个(91.7%)、32个(88.9%)。2组对内口、瘘管及脓腔的检出准确性均较高,差异无统计学意义(P > 0.05),但3DV-MRI组检出内口、瘘管较2D-MRI组的数量分别多6个、2条。3DV-MRI组在临床关注的4个方面评分结果均高于2D-MRI组,2组对比4个方面评分差异均有统计学意义( P < 0.05)。 结论 2D-MRI图像及3DV-MRI重建图像对复杂性肛瘘的术前诊断均具有较高检出率及准确性;3DV-MRI图像较常规2D-MRI能够为临床医生在复杂性肛瘘的诊治中提供更多有价值的指导信息,增加临床医生对病变程度、范围及邻近结构的认识,对减少术后复发及对肛门括约肌的损伤具有较好的临床应用价值。 Abstract:Objective To explore the clinical value of MRI three-dimensional visualization (3DV) reconstruction technology in the evaluation of complex anal fistula. Methods The preoperative MRI data of 46 patients with complicated anal fistula confirmed by operation were collected retrospectively and divided into 2D-MRI group and 3DV-MRI group according to the image. The number of internal orifice, fistula and pus cavity were observed respectively, and the images of the two groups were scored according to the scoring standard of Likert scale from the four aspects of clinical concern. Results In the two groups, 64 (81.0%) and 70 (88.6%) internal orifices, 82 (85.4%) and 84 (87.5%) fistulas, 33 (91.7%) and 32 (88.9%) pus cavities were detected respectively. Conclusion Both 2D MRI and 3DV MRI reconstruction images have a high detection rate and accuracy in the preoperative diagnosis of complex anal fistula; Compared with conventional 2D-MRI, 3DV-MRI images can provide more valuable guidance information for clinicians in the diagnosis and treatment of complex anal fistula, increase clinicians' understanding of the extent, scope and adjacent structures of the disease, and have better clinical application value in reducing postoperative recurrence and damage to the anal sphincter. -
Key words:
- MRI /
- 2D /
- 3DV /
- Complex anal fistula
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表 1 内口、瘘管、脓腔检出数量
Table 1. Number of detected internal openings,fistulas,and pus cavities
分组 2D-MRI组 3DV-MRI组 χ2 P 内口(个)
检出数
未检出数
64
15
70
9
1.767
0.184
瘘管(条)
检出数
未检出数
82
14
84
12
0.178
0.673脓腔(个)
检出数
未检出数
33
3
32
4
0.158
0.691表 2 李克特量表[(M±Q),分]
Table 2. Likert scale [(M±Q),points]
分组 2D-MRI组 3DV-MRI组 Z P Q1内口方位判断 3.33(2.67,4) 3.67(3.33,4.33) −2.283 0.022* Q2瘘管数量及走行情况 3.67(3.33,4) 4.67(4.33,4.67) −7.160 < 0.001* Q3瘘管与肛门
括约肌关系判断3.67(3.33,3.67) 4.33(4.33,4.66) −7.144 < 0.001* Q4指导手术方式的选择 3.33(3,3.67) 4.67(4.33,4.67) −7.797 < 0.001* *P < 0.05。 -
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