Imaging Oxygen Metabolism In Acute Stroke Using MRI.

Abstract

The ability to image the ischemic penumbra during hyper-acute stroke promises to identify patients who may benefit from treatment intervention beyond population-defined therapeutic time windows. MR blood oxygenation level dependent (BOLD) contrast imaging has been explored in ischemic stroke. This review provides an overview of several BOLD-based methods, including susceptibility weighted imaging (SWI), R2, R2*, R2', R2* under oxygen challenge, MR_OEF and MROMI approaches to assess cerebral oxygen metabolism in ischemic stroke. We will review the underlying pathophysiological basis of the imaging approaches, followed by a brief introduction of BOLD contrast. Finally, we will discuss the applications of the BOLD approaches in patients with ischemic stroke. BOLD-based methods hold promise for imaging tissue oxygenation during acute ischemia. Further technical refinement and validation studies in stroke patients against positron emission tomography (PET) measurements are needed.

• Authors: Hongyu An, Andria L Ford, Katie D Vo, Qingwei Liu, Yasheng Chen, Jin-Moo Lee, Weili Lin
• Journal: Current radiology reports (Curr Radiol Rep) Vol. 2 Issue 3 Pg. 39 (Mar 01 2014) ISSN: 2167-4825 [Print] United States
• PMID: 24707451 (Publication Type: Journal Article)