MAGNETIC RESONANCE IMAGING IN STROKE EVALUATION: ADVANCES IN DIAGNOSTIC TECHNOLOGY AND MR SPECTROSCOPY

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Background: Stroke remains a primary etiology of death and disability globally.The primary objective of stroke imaging is to assess the parenchyma, perfusion, and intracranial circulation to differentiate salvageable tissue from infarcted tissue.Aim: To evaluate the role of MRI in the assessment of stroke, determine the vascular territories involved, and analyze MR spectroscopy (MRS) findings in ischemic stroke. Materials and Methods:A prospective cross-sectional study was conducted on 55 patients (aged 18-80 years) presenting with clinical suspicion of stroke at Jamia Hamdard, New Delhi.Imaging was performed using a 1.5T Siemens MAGNETOM ESSENZA.The protocol included T1W, T2W, FLAIR, DWI, GRE, 3D TOF MRA, and MRS.Results: 44 (80%) patients had ischemic infarcts.Hypertension (58.18%) and Diabetes (52.73%) were the predominant risk factors.The MCA was the most common territory involved (45.46%).DWI detected 100% of acute infarcts, compared to 58.06% by T2W.MRS showed decreased NAA and a lactate peak in 100% of acute infarct cases.Conclusion: MRI, particularly utilizing DWI and MRS, is a highly sensitive modality for early stroke detection, offering metabolic insights into the ischemic penumbra that conventional imaging lacks.

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