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目的探讨磁共振扩散加权成像(DWI)结合常规磁共振成像(MRI)在腹盆腔脓肿诊断中的应用价值。方法选取2015年2月至2016年2月于中国医科大学附属一院鞍山医院就诊的13例腹盆腔脓肿患者作为研究对象,所有患者均接受常规T1WI、T2WI、DWI扫描,对患者的磁共振DWI结合常规MRI影像学资料予以回顾性分析,分析其病灶位置、形态特征以及信号特征。结果本组13例患者共有21个腹盆腔脓肿,主要位于右结肠旁沟,其次是膈下;21个腹盆腔脓肿中,形态为圆形者占66.7%(14/21),有包膜者占90.5%(9/21),有分隔者占28.6%(6/21);本组13例患者中,早期脓肿6例,共9个病灶,在T1WI上,脓腔表现为低信号,在T2WI上表现为高信号,其中4个病灶DWI表现为高信号,5个为低信号,包膜T1WI表现为等信号或者低信号,而T2WI表现为低信号;中期或后期脓肿7例,共12个病灶,脓腔T1WI表现为低信号,DWI和T2WI则表现为稍高、高信号,T1WI、T2WI包膜均表现为低信号。结论磁共振DWI结合常规MRI在腹盆腔脓肿诊断中的临床价值确切,信号特点明显,能准确确定患者腹盆腔脓肿位置、形态特征,可作为腹盆腔脓肿临床检查的首选诊断方法。
Objective To investigate the value of diffusion weighted imaging (DWI) combined with conventional magnetic resonance imaging (MRI) in the diagnosis of abdominorectal abscess. Methods Thirteen patients with abdominal pelvic abscess treated at Anshan Hospital, the First Affiliated Hospital of China Medical University from February 2015 to February 2016 were selected as study subjects. All patients underwent routine T1WI, T2WI and DWI scans. Their MRI DWI Combined with conventional MRI data to retrospectively analyze the location of lesions, morphological features and signal characteristics. Results There were 21 abdominopelvic abscesses in this group of patients, mainly located in the right colonic gutter followed by subphrenic. In 21 abdominopelvic abscesses, 66.7% (14/21) Accounting for 90.5% (9/21), with separators accounted for 28.6% (6/21); in this group of 13 patients, 6 cases of early abscess, a total of 9 lesions in the T1WI, the abscess showed low signal in the T2WI showed high signal, of which 4 lesions DWI showed high signal, 5 low signal, T1WI capsule showed equal signal or low signal, and T2WI showed low signal; mid-term or late abscess in 7 cases, a total of 12 The lesions showed low signal intensity in T1WI of abscess and DWI and T2WI, while the signal of T1WI and T2WI showed low signal. Conclusions Magnetic resonance DWI combined with conventional MRI has definite clinical value in the diagnosis of abdomen pelvic abscess and obvious signal characteristics. It can accurately determine the location and morphological characteristics of abscess in patients with pelvic abscess. It can be used as the first choice of clinical diagnosis of abdominal pelvic abscess.