CAJ | 학술논문

磁敏感加权成像（SWI）是根据不同组织的磁敏感系数差异提供影像对比，在扫描过程中可以同时获得幅值和相位两组影像，通过定量测量信号值而对脑内的铁含量进行半定量测量，并且可以动态监测脑组织内铁含量的变化，其对铁的敏感性明显优于常规梯度回波序列。 SWI对于早期发现疾病、监测病情及指导治疗具有重要意义。就SWI检测脑内铁含量的原理、应用及前景予以综述。
자민감가권성상（SWI）시근거불동조직적자민감계수차이제공영상대비，재소묘과정중가이동시획득폭치화상위량조영상，통과정량측량신호치이대뇌내적철함량진행반정량측량，병차가이동태감측뇌조직내철함량적변화，기대철적민감성명현우우상규제도회파서렬。 SWI대우조기발현질병、감측병정급지도치료구유중요의의。취SWI검측뇌내철함량적원리、응용급전경여이종술。
Susceptibility-weighted imaging(SWI) is a high-spatial-resolution 3D MR imaging technique. SWI relys on the difference in magnetic susceptibility of tissues to show tissue contrast. It is superior to conventional gradient echo sequence in detecting iron deposit. Semi-quantitative measurement of iron and dynamically evaluating brain iron change can be archived by quantitatively measuring tissue signal intensity. SWI can provide important information in early disease detecting, monitoring disease progress, and evaluating efficiencies of treatments. In this article, we reviewed the principle and application of iron measurement in brain SWI.