1.5 T MR快速扫描在腹部疾病穿刺活检中的临床应用

The clinical Application of Percutaneous biopsyin Abdominal Diseases Under a Quick Scan of 1.5 T MR Guidance

目的探讨高场封闭式MR导向穿刺活检对诊断腹部不同疾病的临床应用价值。方法搜集高场MR导向穿刺活检的45例患者,其中肝脏8例,胰腺8例,肾脏9例,腹膜后10例,盆腔10例,对其穿刺活检结果与术后组织病理学诊断结果以及临床随访结果进行对照分析,并总结MR导向较其他导向设备活检的优势。结果45例患者在高场MR引导下顺利完成了穿刺,穿刺均一次性成功,手术均在局部麻醉下完成,术中患者耐受性良好,MR引导的穿刺活检均获得了足够的标本,且没有发生明显的并发症。穿刺结果与术后病理比较,总符合率为93.3%(42/45)。结论高场MR无电离辐射,具有较高的软组织分辨率,可任意方位断层成像,多个角度引导穿刺,故对于诊断腹部疾病简单、安全,取材准确可靠,准确率高。

Objective To investigate the clinical value of high field magnetic resonance（ MR） guided percutaneous biopsy in the diagnosis of different diseases of the abdomen. Methods 45 cases of percutaneous biopsy under high-field MR guidance were analyzed retrospectively,including 8 cases of liver,8 cases of pancreas,9 cases of kidney,10 cases of retroperitoneal and 10 cases of pelvic cavity. The biopsy results were compared with the histopathological diagnosis and followup results,and the advantages of MR guided biopsy were summarized. Results 45 cases of percutaneous biopsy guided by high-field MR were all successfully completed,punctures were successful all at once. Operations were done under local anesthesia and they were well tolerated by the patients. MR imaging guided biopsies obtained adequate specimens and without obvious complications. The total coincidence rate was 93. 3%（ 42 /45）,compared with the pathologic results after operation. Conclusion So for the diagnosis of abdominal diseases,high-field MR is advantageous because it has no ionizing radiation and has a high soft tissue resolution,arbitrary slice imaging,multiple angle guided puncture,it is simple,safe,drawing is accurate and reliable,high accuracy.