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脑血管病因其发病率、致残率高等特点,成为当今危害人类健康的主要疾病之一。随着医学影像学技术不断发展,磁敏感加权成像新技术(SWI)在诊断及评价脑血管病有了新的认识。它利用不同组织间的磁敏感差异,采用完全流速补偿、三维、射频脉冲扰相、高分辨、3D梯度回波扫描等磁共振成像技术,突出强调出血液代谢产物中的顺磁性物质如脱氧血红蛋白等,对脑血管病特别是微小出血灶更加敏感。本文将SWI基本原理、其在脑血管疾病诊断方面的应用及未来展望作一综述。
Due to its morbidity and disability rate, cerebrovascular disease has become one of the major diseases that endanger human health. With the continuous development of medical imaging technology, the new technology of magnetic susceptibility weighted imaging (SWI) has gained a new understanding in the diagnosis and evaluation of cerebrovascular diseases. It utilizes magnetic susceptibility differences among different tissues and uses magnetic resonance imaging techniques such as full flow rate compensation, three-dimensional, radio frequency pulse scrambling, high resolution, 3D gradient echo scanning, etc., highlighting paramagnetic substances in blood metabolites such as deoxyhemoglobin And so on, especially for cerebrovascular disease more sensitive to small bleeding spots. This article will SWI basic principles, its application in the diagnosis of cerebrovascular disease and future prospects are reviewed.