肛瘘的MRI诊断

MRI Diagnosis of Perianal Fistulas

目的 探讨肛瘘的MRI表现与诊断价值。材料与方法 16例肛瘘患者 ,MRI行冠状面及横断面STIR序列扫描 ,冠状面及横断面FFE序列平扫及Gd DTPA增强扫描 ,检查结果与手术对照。结果 11例简单肛瘘 ,5例复杂肛瘘 ,MR检查结果与手术结果一致。STIR序列图像上 ,瘘管及肛周脓肿表现为条状及片状高信号。在FFE序列平扫图像上 ,瘘管及肛周脓肿表现为条状及片状低信号 ,增强扫描后瘘管及脓肿壁明显强化。结论 MRI是一种快速、无损伤及具有准确性相当高的肛瘘检查方法 。

Objective To study MRI manifestations of perianal fistulas.Materials and Methods MRI was performed in 16 patients with perianal fistula using STIR and both plain and Gd DTPA enhanced FFE sequences in axial and coronal planes. MRI findings were compared with the surgical results.Results Of 16 patients, 11 had simple inter sphincteric fistulas and 5 had complex fistulas. MRI findings were in accordance with the surgical results.Conclusion MRI is a noninvasive and highly accurate examination for perianal fistulas, which provides anatomic and pathologic information necessary for surgical management.