 MRI evaluation of the brain tumours, myself Dr. Kajal Patel, third year resident Dr. Department of the Radio Diagnosis from Surat Municipal Institute of Medical Education and Research, special thanks to my co-authors Dr. Parish Patel, Dr. Jigar Aya, Dr. Ekta Desai, Dr. Nehal Divanji, Dr. Neerao Kadwani. In production, MRI plays a major role in diagnosis, grading, treatment and treatment response assessment of brain tumour and other intracranial lesions. MRI provides the anatomical and structural detail of the lesion in the new axis. Roughly one-third of CNS tumours are metastatic lesions, one-third are glauoma, and one-third is of non-glial origin. Glauoma is a non-specific term indicating that the tumour originates from the glauals like the astrocyte, oligodendrocyte, ependymol and the coral Texas cells. Astrocyte toma is a most common glauoma and subdivided into the low-grade pylocytic, intermediate anaplastic and the high-grade malignant glauoblastoma multi-form. Glauoblastoma multi-form is a most common type, 50% of all the astrocyte tumour. Non-glial cell tumour, a large heterogeneous group of tumour for which meningioma is the most common. AIMS and Objective, MRI evaluation of the lesion and its extent and establishment of the radiological diagnosis. To evaluate the role of MRI, edit with the contrast enhance MRI as an imaging modality for the diagnosis of the brain tumour. Maintenance and the method. Observation study was carried out on 32 patients during the study period of one and a half year. Inclusion criteria, only those patients willing to participate in the study were included. Brain tumour detected on contrast MRI study were taken and cases of all the age group irrespective of the sex. Exclusion criteria, patient not willing to participate in the study. Patient having history of the claustrophobia, patient having the contraindication to the MRI. The MRI scan was performed on 1.5-tester MR-Philip-Echiva during the Radiated Head Coil. Conventional spinicosequals, axial T1-T2 and flare, coronal T2, sagittal T1, post-contrast, axial coronal and sagittal and diffusion weighted imaging and GRE is taken. Contrast enhance scan was performed using the heteronium DTP observation and the result. The most common age group involved is a 41 to 50 year of age group and the distribution of the patient according to type of the lesion out of 32 patients. The maximum number of cases, 8 cases are of metastatic brain lesion followed by the manning germa which are of the 6 patients. Distribution of the patient according to the symptoms, there are various symptoms like the headache, seizures, vertigo, vomiting, tinnitus, endocrine changes, 11 patients, maximum number of patients are presenting with a headache. Discussion of the cases, first one is a pylocytic astrocytoma. 15-year-old male patient, solid cystic infratantory lesion which is seen involving the left cerebellar hemisphere, cystic component appear hyper intense to the CSF on all pulse sequences with no enhancement on the post-contrast study. Eccentric mural nodule, solid nodule component, which show heterogeneous intermediate to hyper intense signal on T2 weighted images and flare images and iso intense on T1 weighted images with heterogeneous enhancement on post-contrast study. Multiple area of the flow void seen on the GRE imaging within the mural nodule component may represent the calcification or the vascular flow void. Second one is a medialoblastoma, 7-year-old male patient, well demarcated, even hyper intense T2 and flare heterogeneously hyper intense lesion, we show heterogeneous peripheral enhancement noted involving the fourth ventricle with resultant hydrocephalus as showing above. Lyoma, 45-year-old male patient, a well-defined T1 hyper intense T2 and flare hyper intense lesion which show few internal blooming with no diffusion restriction and vivid post-contrast enhancement noted involving the left parietal lobe compressing the left lateral ventricle. Intraventricular central neurocytoma, 30-year-old male patient, the solid cystic lesion seen involving left lateral ventricle, cystic component medially appear hyper intense on T2 weighted images and attenuated partly on the flare images and hyper intense on the T1 weighted images. Solid components show heterogeneous hyper to hyper intense signal on T2 weighted image and flare images and iso to patchy hyper intense signal on T1 weighted images with heterogeneous enhancement on the post-contrast study with peripheral blooming on GRE images no evidence of the diffusion restriction is noted. Cranofaryngeoma, 43-year-old female patient, a well demarcated T1 hyper intense T2 and flare hyper intense intracellar lesion noted which show internal few area of the blooming and vivid post-contrast enhancement. Hypothalamic hematoma, 10-year-old male patient, well defined lesion noted in the intrapadicular and prepontane system which appear iso intense on T1 weighted images and hyper intense on T2 and flare images with no diffusion restriction, no area of the blooming noted, no post-contrast enhancement, posteriorly the lesion compressing the basilar artery and displacing it toward the right side superiorly the lesion involving the hypothalamic area. Metastasis, 59-year-old male patient with non-case of carcinoma of prostate multiple small variable size cortical and sub cortical wide metal homogeneously enhancing lesion which are hyper intense on the T1 images and hyper intense on the T2 flare images noted with heterogeneous ring enhancement on the post-contrast T1 weighted images. The metastatic lesion noted involving left thalamus, right temporal lobe, bilateral parietal lobe, pons, middle cerebellar peduncle and the cerebellum. Meningioma, 45-year-old female patient, well defined T1 iso intense T2 and flare hyper intense lesion which show homogenous post-contrast enhancement noted involving the right cerebellar hemisphere. Clioblastoma multi-formed, 66-year-old male patient, a large well demarcated T1 hyper intense T2 and flare hyper intense lesion with surrounding vasogenic edema with internal few low voids noted and the lesion show intermediate diffusion restriction on DWI ADC sequences and irregular ring enhancement on post-contrast images. The lesion noted involving the left parietal temporal region. Lymphoma, 65-year-old HIV positive female, multiple well demarcated T1 hyper intense T2 and flare hyper intense lesion which show diffusion restriction and peripheral ring enhancement with notch sign present. The lesion noted involving the left perivendricular white matter in the left parietal lobe and exhibit the sub-apendimal sub-apendimal extension and crossing the purpose callosome. Pichitory micro adenoma with hemorrhage, 30-year-old female patient, a large well demarcated cellar and supra cellar lesion noted which appear heterogeneously hyper intense on T1 image, hyper intense on T2 and flare images and the lesion show heterogeneous post-contrast enhancement and there is a fluid level noted within the lesion with a blooming on the posterior part of the lesion on GRE image suggests the hemorrhage within the lesion and the lesion is forming the typical figure of eight sign. Conclusion, one of the most important advantage of MRI is influence of the multiple tissue and machine parameters on the signal intensity. In addition capability of the imaging in various planes and multi-slides is another advantage for the brain tumor are discussed MRI is superior to CT in many brain tumor but poor delineation of the calcification and hemorrhage is the disadvantage of MRI take home messages lesion with the vasogenic edema should also demonstrate contrast enhancement solitary deep lesions are most likely to be the primary glioma ground nodular lesion at the gray white matter assumption are more likely to be metastatic and not sandwiched abnormally to the deep depression at the tumor marching on the contrast enhance MRI is specific feature for the primary CNS lymphoma diffuse glioma affect the cortex vasogenic edema does not and extra accelerations are meningioma, schwannoma and congenital cyst. Thank you.