What is the investigation of choice for cerebral aneurysm? CT angio Or MRI angio and why?

what is the investigation of choice for cerebral aneurysm? CT angio Or MRI angio and why?

CT angio enough and is IOC.

Both CT angio and MR angio are done commonly. If you have to choose between them CT Angio is done more commonly- as it is quick and readily available. Also aneurysms present with SAH and CT is preferred for Acute SAH diagnosis. MR angio is done in elderly and with deranged RFTs as TOF MR Angiography does not require contrast. Gold std is Invasive DSA