Role of Diffusion‑weighted Imaging in Acute Stroke Management using Low‑field Magnetic Resonance Imaging in Resource‑limited Settings

A variety of imaging modalities exist for the diagnosis of stroke. Several studies have been carried out to ascertain their contribution tothe management of acute stroke and to compare the benefits and limitations of each modality. Diffusion‑weighted imaging (DWI) hasbeen described as the optimal imaging technique for diagnosing acute ischemic stroke, yet limited evidence is available on the valueof DWI in the management of ischemic stroke with low‑field magnetic resonance (MR) systems. Although high‑field MR imaging (MRI)is desirable for DWI, low‑field scanners provide an acceptable clinical compromise which is of importance to developing countriesposed with the challenge of limited availability of high‑field units. The purpose of this paper was to systematically review the literatureon the usefulness of DWI in acute stroke management with low‑field MRI scanners and present the experience in Nigeria.