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The purpose of the research is to identify the differences between image informa t ion of MRI Brain in axial plane Diffusion Weighted Image (DWI) sequence and variation b value in case ischemic stroke, and to determine optimal b value in examination MRI Brain in case Isch e mic Stroke. This research was a quantitative research with experimental approach. This research was done in Panti Rapih Hospital, Yogyakarta and use d 8 ischemic stroke patients with 3 variasion b value (500s/mm 2 , 1000 s/mm 2 , 1500 s/mm 2 ) and 3 radiologist s as respondents. The data were analy zed using Friedman test. Result showed that there was difference between image informa t ion of MRI Brain in axial plane Diffusion Weighted Image (DWI) sequence and variation b value in case ischemic stroke with p<0.05 which means there is a difference between Basal Ganglia, Cerebellum, and the border of the infarction . Meanwhile, Cortex Cerebri, Thalamus and Pons obtained no difference in image information and the optimal b value for MRI Brain examination of ischemic stroke 1500 s/mm2. Based on the result there was a difference  between image informa t ion of MRI Brain in axial plane Diffusion Weighted Image (DWI) sequence and variation b value in case ischemic stroke. Optimal value of variation b value for MRI Brain examination of ischemic stroke was 1500 s/mm2.

The Image Information Of Mri Brain In Axial Diffusion Weighted Image (Dwi) With Variation B Value In Ischemic Stroke