CAJ | 학술논문

目的：探讨低场 MRI在四肢木、竹类异物诊治中的应用价值。方法：回顾性分析本院2007年－2013年行MRI检查并经手术探查取出四肢木、竹类异物的15例患者（27块异物）的临床和 MRI 资料，15例均行 SE T1 WI、FSE T2 WI、STIR及GRE T2*WI扫描，分析比较4种序列对异物及周围改变的显示情况。结果：15例患者的27块异物中，SE T1 WI显示13块，FSE T2 WI显示22块，STIR显示27块，GRE T2*WI显示26块。FSE T2 WI、STIR、GRE T2*WI对异物显示率高于SE T1 WI。SE T1 WI对出血的显示率高于FSE T2 WI。SE T1 WI 和GRE T2*WI 对挫伤的显示率均低于FSE T2 WI和STIR。结论：MRI是检出四肢木、竹类异物十分有效的方法，STIR和GRE T2*WI是检出异物最敏感的序列，STIR是显示异物周围改变最敏感的序列，综合运用多种序列可提高异物的检出率，为避免漏诊、误诊应行双侧对比检查。
목적：탐토저장 MRI재사지목、죽류이물진치중적응용개치。방법：회고성분석본원2007년－2013년행MRI검사병경수술탐사취출사지목、죽류이물적15례환자（27괴이물）적림상화 MRI 자료，15례균행 SE T1 WI、FSE T2 WI、STIR급GRE T2*WI소묘，분석비교4충서렬대이물급주위개변적현시정황。결과：15례환자적27괴이물중，SE T1 WI현시13괴，FSE T2 WI현시22괴，STIR현시27괴，GRE T2*WI현시26괴。FSE T2 WI、STIR、GRE T2*WI대이물현시솔고우SE T1 WI。SE T1 WI대출혈적현시솔고우FSE T2 WI。SE T1 WI 화GRE T2*WI 대좌상적현시솔균저우FSE T2 WI화STIR。결론：MRI시검출사지목、죽류이물십분유효적방법，STIR화GRE T2*WI시검출이물최민감적서렬，STIR시현시이물주위개변최민감적서렬，종합운용다충서렬가제고이물적검출솔，위피면루진、오진응행쌍측대비검사。
Objective:To investigate the clinical value of low field MRI in the diagnosis of wooden or bamboo foreign bodies in limbs.Methods:Low field MRI of 27 pieces of wooden or bamboo foreign bodies in 15 patients were performed and confirmed by surgery.MRI pulse sequences included SE T1 WI、FSE T2 WI、STIR and GRE T2 *WI.Results:Of the 27 pieces of foreign bodies,13 were detected on SE-T1 WI,22 were detected on FSE-T2 WI,27 were detected on STIR,26 were detec-ted on GRE T2 *WI.The detection rates of FSE T2 WI、STIR、GRE T2 *WI were higher than SE T1 WI.The detection rate of SE T1 WI was higher than FSE T2 WI.The detection rates of SE T1 WI and GRE T2 *WI were higher than FSE T2 WI and STIR.Conclusion:MRI is an effective method in detection of wooden or bamboo foreign bodies.STIR and GRE T2 *WI is the most sensitive sequence in detection of such foreign bodies,while STIR is most sensitive in the detection of the changes around foreign bodies.Scanning of bilateral limbs for comparison is necessary to avoid misdiagnosis.