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磁敏感加权成像(SWI)是一种采用完全流动补偿、高分辨率、三维梯度回波的MRI成像新技术,其通过相位后处理突出显示血液中的顺磁性物质,例如去氧血红蛋白、细胞内的高铁血红蛋白、血铁质等,特别适用于检测静脉血管内含脱氧血红蛋白的血液和血管外的血液代谢物,其对铁沉积、钙化等亦十分敏感。现总结SWI在小新生儿损伤、脑出血、脑血管畸形、脑梗死、脑肿瘤以及钙化或铁质沉积等相关神经系统疾病的临床应用新进展,以期对新生儿常见神经系统疾病的MRI诊断提供新的认识和视角。
Magnetic Susceptibility Weighted Imaging (SWI) is a new MRI imaging technique that uses full-flow compensation, high-resolution, and three-dimensional gradient echoes that highlight paramagnetic substances in the blood through phase postprocessing such as deoxyhemoglobin, intracellular Of methemoglobin, blood iron, etc., is particularly suitable for detecting venous blood containing deoxy-hemoglobin and extravascular blood metabolites, the iron deposition, calcification, etc. are also very sensitive. The clinical application of SWI in nervous system diseases such as neonatal injury, cerebral hemorrhage, cerebrovascular malformations, cerebral infarction, brain tumors and calcifications or iron deposits is summarized. The aim of this study is to provide MRI diagnosis of common neurological diseases in neonates New understanding and perspective.