Conventional digital subtractional vs non-invasive MR angiography in the assessment of brain arteriovenous malformation

Publication date: June 2018
Source:Clinical Neurology and Neurosurgery, Volume 169
Author(s): Nguyen Ngoc Cuong, Vu Dang Luu, Tran Anh Tuan, Le Tuan Linh, Kieu Dinh Hung, Vo Truong Nhu Ngoc, Kulbhushan Sharma, Van Huy Pham, Dinh-Toi Chu
ObjectivesDigital subtractional angiography (DSA) is the standard method for diagnosis, assessment and management of arteriovenous malformation in the brain. Conventional DSA (cDSA) is an invasive imaging modality that is often indicated before interventional treatments (embolization, open surgery, gamma knife). Here, we aimed to compare this technique with a non-invasive MR angiography (MRI DSA) for brain arteriovenous malformation (bAVM).Patients and MethodsFourteen patients with ruptured brain AVM underwent embolization treatment pre-operation. Imaging was performed for all patients using MRI (1.5 T). After injecting contrast Gadolinium, dynamic MRI was performed with 40 phases, each phase of a duration of 1.2 s and having 70 images. The MRI results were independently assessed by experienced radiologist blinded to the cDSA.ResultsThe AVM nidus was depicted in all patients using cDSA and MRI DSA; there was an excellent correlation between these techniques in terms of the maximum diameter and Spetzler Martin grading. Of the fourteen patients, the drainage vein was depicted in 13 by both cDSA and MRI DSA showing excellent correlation between the techniques used.ConclusionMRI DSA is a non-invasive imaging modality that can give the images in dynamic view. It can be considered as an adjunctive method with cDSA to plan the strategy treatment for bAVM.



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