A COMPARATIVE STUDY OF MAGNETIC RESONANCE ANGIOGRAPHY & DIGITAL SUBTRACTION ANGIOGRAPHY IN DIAGNOSIS OF CEREBRAL

Background and purpose:Although phase-contrast MR angiography (MRA) provides someinformation regarding hemodynamics of cerebral arteriovenous malformations (AVMs), but mostConventional MR angiographic techniques have not been helpful in this respect. We attemptedto determine the value of MR digital subtraction angiography (DSA) in assessing AVMhemodynamics. Soin this retrospective observational study was carried out to compare MRA and DSA in diagnosis of cerebral AVM. Methods and materials: It was a retrospective observational study conducted in the Department of Neurology Dhaka Medical College Hospital (DMCH), Dhaka during the period of January 2010 to December 2010. Thirty patients with haemorrhagic stroke age ranging from 13 to 65 years were selected on the basis of inclusion and exclusion criteria as the study sample. MRA and DSA were done in all the selected patients. Results:The mean age of the patients of haemorrhagic stroke was30.3±14.3years and male female ratio was 2.7:1.The venous drainage of AVM 13 and 12 were superficial and deep respectively evaluated 100 % by MRA. In the diagnosis of cerebral AVM nidussize S1<3, S2:6 cm sensitivity 100 % but accuracy 100 % and 73.3 % respectively. Sensitivity 33.3 % found in diagnosis of cerebral AVM nidus size S3:>6cm, 100 % sensitive in the diagnosis of superficial and deep venous drainage AVM. Regarding the eloquence of brain area 15 was n