Mismatch of delayed perfusion volume between TTP and Tmax map of perfusion MRI

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• 作者：Sanghyeon Kim ; Myongjin Kang ; ^{myongjin.kang@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Sunseob Choi ; Dong Won Kim
• 关键词：Ischemic stroke ; Perfusion ; Time to maximum ; Time to peak
• 刊名：Clinical Imaging
• 出版年：2016
• 出版时间：January-February 2016
• 年：2016
• 卷：40
• 期：1
• 页码：63-67
• 全文大小：1083 K

文摘

To look for another set of parameters to predict the change in infarct size in acute stroke patients with a perfusion-weighted imaging (PWI)–diffusion-weighted imaging (DWI) mismatch.

Materials and Methods

We reviewed 54 patients who had PWI-DWI mismatch and vascular occlusion on initial MRI and no recanalization of occluded vessel.

Results

Time-to-peak and time-to-max (TTP-Tmax) perfusion mismatch volume was independently significant as a correlate of infarct volume change (P = .004).

Conclusions

The finding of a large TTP-Tmax perfusion delay mismatch volume in patients with acute stroke who have a PWI-DWI mismatch on an initial MRI may predict that the infarct volume will not increase despite persistent vascular occlusion.