This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain Imaging: Anatomy, Trauma, and Tumors, Subject name: Radiology
[{'content': 'Para meningeal Rhabdomyosarcoma is best diagnosed by : \nSelect and explain. \nA. CT Scan, B. MRI, C. SPECT, D. PET', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. MRI I could not find any direct reference to this answer in all the books within my reach My answer is based on the basics of CT & MRICT is the best inv. for bone imaging. It has limitations for soft tissues, especially when the soft tissue lies with a skeletal framework.But MRI is excellent for soft tissue imaging and is more sensitive in detecting early brain damage.So for a parameningeal rhabdomyosarcoma the best investigation would be MRI as it would demonstrate very clearly its extension within the meninges.Harrison 15/e, on page 2337 states that the : Best investigation for a primary or metastatic brain tumor is - MRI Best investigation for meningeal disease - MRIThis information further supports my answer.", 'role': 'assistant'}]