Thank you so much sir for your excellent understandable explanations!. Humble request please, can you make a lecture on how to identify the following structures on MRI brain? 1)Petroclival meningioma with emphasis on how to Identify IAC, Jugular bulb/Jugular foramen?. 2)Carvenous sinus tumous. 3) Radiological features of cerebral aneurysms on CT scan and MRI?. Thank you in advance!.