Background: Shoulder pain is third most common presenting complaint due to which a person visits Orthopedic clinic [1] and referred to the radiodiagnosis department for the shoulder USG and MRI. Aims and Objectives: This study aims to assess the accuracy of high resolution ultrasound with MRI ndings as gold standard. Materials and method: 150 patients with shoulder pain referred to Department of Radiology fullling the inclusion criteria were included in the study. USG shoulder and MRI was performed and ndings were recorded.. Results: Amongst 150 patients, 105 were males(70%) and 45 were female(30%).The patient age ranged from 14 years to 80 yr. rotator cuff tears was the far most common pathology detected by USG ,later conrmed by MRI . Conclusion: The presentstudy concludes that USG is as sensitive and specic to MRI in detection of shoulder joint pathology as compare to MRI .

Background: Infratentorial tumors accounts for 65% of all paediatric tumors, and most common infratentorial tumors in children include juvenile pilocytic astrocytoma (JPA), medulloblastoma, ependymoma and brainstem glioma. An accurate diagnosis has important clinical implications related to treatment and prognosis. DWI and ADC maps provide information regarding the cellularity of tumors and have an important role in the preoperative differentiation of different tumor types. Aim: To evaluate the role of DWI and ADC measurement in distinguishing between the most common pediatric posterior fossa tumors. Methods: In this study, we evaluated 25 paediatric patients aged between 1 to 15 years suspected to have posterior fossa mass on the CT referred from neurosurgery department to our department for MRI brain. All these patients subjected to conventional MRI followed by diffusion MR imaging and calculation of the ADC values. Written consent was taken from the guardians. Results: In juvenile pilocytic astrocytoma ( n = 10), ADC values ranged between 1.3 and 1.9 × 10?3 mm2/s, ependymoma (n = 8), ADC values ranged between 1.1 and 1.5 × 10?3 mm2/s and medulloblastoma (n = 7), ADC values ranged between 0.45 and 0.9 × 10?3 mm2/s. Statistically significant difference in ADC value was detected between JPA, ependymomas and medulloblastomas, while no statistically significant difference was detected between JPA and ependymomas. Conclusion: Diffusion Imaging plays an important role in demonstrating the features of posterior fossa brain tumours for appropriate diagnosis of medulloblastomas, ependymomas, and pilocytic astrocytoma. Keywords: DWI, MRI, Posterior fossa

Background- Rotator cuff tears are one of the most common causes of shoulder pain for which patients seek treatment. As in our daily work, the shoulder joint is the most frequently used, there is higher chance of having shoulder joint injury. The aim of the study is to compare the efficacy of MRI in diagnosing shoulder pathologies in comparison to arthroscopy, considering arthroscopy as the gold standard. Methods- 30 Patient with suspected rotator cuff injury patients, between 18-80 years of age was included in the study. MRI of the shoulder joint was done followed by shoulder arthroscopy. The data collected was analysed for the significant correlation between MRI of shoulder and arthroscopic findings by kappa statistics. Results- The accuracy of MRI in diagnosis of rotator cuff partial tears, was 90%, while sensitivity and specificity was 100.00%, 78.57% and positive predictive value was 84.21% and negative predictive value was 100.00% and accuracy of MRI in diagnosis of rotator cuff full tears, was 86.67%, while sensitivity and specificity was 63.64%, 100.00%) and positive predictive value was 100.00% and negative predictive value was 82.61% in our study. Conclusion- Our study demonstrates a high sensitivity and specificity for the MRI diagnosis of both partial and full thickness rotator cuff tears and good correlation with arthroscopic findings. Keywords: Rotator cuff, Shoulder pain, Arthroscopy, MRI.

Introduction- In comparison to other neoplasms, bone tumor is relatively not so common and constitutes only 0.5% of the total world cancer incidence. Evaluation of bone neoplasms consists of a multimodality approach and whereas cross sectional imaging has extraordinarily improved the ability to characterize tumors. Aim And Objective- This study aims at evaluating MRI imaging pattern of bone tumors and their correlation with histopathology. Materials And Method: 80 patients with suspected bone tumors referred to Department of Radiology after fullling the inclusion criteria were included in the study. Contrast enhanced MRI orbit was performed and ndings were corelated with histopathology. Results: Amongst 80 patients, 48 were males(60%) and 32 were female(40%).The patient age ranged from 1 month to 55 year. The bone tumors consist of 50 malignant and 30 benign masses amongst which osteosarcoma and enchondroma were the most common respectively. Conclusion: The present study concludes that MRI is extremely useful modality to characterize bone tumors.