Bosemani Thangamadhan, Poretti Andrea, Orman Gunes, Meoded Avner, Huisman Thierry A G M
Section of Pediatric Neuroradiology, Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine; Baltimore, MD, USA -
Neuroradiol J. 2013 Oct;26(5):579-83. doi: 10.1177/197140091302600512. Epub 2013 Nov 7.
Susceptibility-weighted imaging (SWI) is an advanced MRI technique providing information on the blood oxygenation level. Deoxyhemoglobin is increased in hypoperfused tissue characterized by SWI-hypointensity, while high oxyhemoglobin concentration within hyperperfused tissue results in a SWI iso- or hyperintensity compared to healthy brain tissue. We describe a child with a stroke, where SWI in addition to excluding hemorrhage and delineating the thrombus proved invaluable in determining regions of hyperperfusion or luxury perfusion, which contributed further to the prognosis including an increased risk of developing post-ischemic malignant edema.
磁敏感加权成像（SWI）是一种先进的磁共振成像技术，可提供有关血液氧合水平的信息。在以SWI低信号为特征的灌注不足组织中，脱氧血红蛋白增加，而与健康脑组织相比，灌注过度组织内高氧血红蛋白浓度导致SWI等信号或高信号。我们描述了一名患有中风的儿童，其中SWI除了排除出血和勾勒血栓外，在确定灌注过度或奢侈灌注区域方面被证明具有重要价值，这对预后有进一步影响，包括增加发生缺血后恶性水肿的风险。
