 Good morning, everyone. I am Dr. Vazika, post-project second year student from Department of Radial Diagnosis, Dvipartil Medical College and Hospital, Palapur. My paper presentation topic is diffusion-weighted MR imaging versus CT brain, diagnostic accuracy in hyperacute stroke. Aim of this study was to compare the diagnostic accuracy of non-enhanced computer tomography and diffusion-weighted MR imaging in diagnosing hyperacute stroke. Objectives of this study were to study the diagnostic accuracy of diffusion-weighted MR imaging with non-enhanced CT in a diagnosis of hyperacute stroke. And to study the role of diffusion-weighted MR imaging and non-enhanced CT in diagnosing hyperacute ischemic stroke and deciding thromboliting treatment and therapeutic protocols that are aimed at reversing the cerebral ischemic insult. The materials and methods used in this study were clinical data, non-enhanced CT and DWI MRI and conventional MR images obtained in 200 consecutive patients with suspected hyperacute stroke. And the results of this imaging were compared with each other and then correlated with the final discharge diagnosis. These are the images that have been taken during this study. This is a DWI image of a 57-year-old female with symptoms of stroke onset within 3.5 hours showing restricted diffusion in left MCA territory with corresponding low signal in ADC. And this is an MR image of the same patient showing no flow in the left MCA. And this is an axial reconstruction showing an abrupt cutoff or occlusion of the left middle cerebral artery. This is a DWI of 52-year-old male patients with symptoms of stroke onset within 4 hours showing restricted diffusion in left MCA territory. And this is the MRA of the same patient showing no flow in the left MCA and then axial reconstruction showing an abrupt cutoff of the left middle cerebral artery. This is a DWI of a 59-year-old female presenting within 5 hours of stroke symptoms shows hyperintensity in the right posterior parietal region. The MR angiography of circle of the list demonstrates small calibre of right sylvanes branches of MCA with compared to the normal. This is a chart that is showing the age distribution. In this study, the age range that was taken was between 21 to 80 years and the most of the population was between 51 to 60 years. That is around 29.5%. Sex distribution, 73% female were taken and 27% were male. Sex-wise age distribution, between 51 to 60 years, the male percentage was around 31 and the female that were 28.8%. Severeity of stroke based on non-enhanced CT and DWI MRI findings. Around 11 cases, they showed lacuna or small stroke. Around 68 cases showed moderate stroke. 63 cases showed moderate to severe and 638 cases were severe cases. Non-enhanced CT findings, 26 cases shows hyperdense MCA signs. 44 cases have shown loss of gray-white interface and insular ribbon signs. 29 number of cases showed loss of gray-white interface, obscuration of lentiform nucleus and 101 cases have a normal CT. Imaging analysis, out of 200 on MRI, the findings were seen in 180 cases. Whereas in CT, 99 cases showed some findings. Conclusion of the study, when compared with non-enhanced CT, DWI was more accurate for identifying hyperacute infarction and more sensitive for detection of ischemia. This study concludes with higher accuracy rate of diffusion-weighted MR imaging in diagnosing hyperacute stroke than MECT. We conclude that diffusion-weighted imaging is a highly reliable and superior imaging method than MECT in detecting ischemia in hyperacute stroke patients and thus aiding the clinician in deciding to treatment protocol at earliest. This study observed the non-enhanced CT that cannot adequately estimate the volume of ischemia and hyperacute stroke and showed poor inter-rater reliability. The large volume strokes have an increased risk of hemorrhagic transformation after thrombolytic therapy. The data in our study reveals the superiority of the DWI in assessing and delineating the extent of infarction in hyperacute stroke. MRI can also evaluate the age of infarct and the potential advantage of non-enhanced CT is to identify and define acute intracerebral hemorrhage, which is an absolute contraindication to thrombolytic. Thank you.