A MIP-based 3D Contour Technique for Radiosurgery of Arteriovenous Malformation

Authors: Zhou Y , Zheng Y , Stuart B , Zhao W and Wu X

DOI: 10.23880/crij-16000189

Volume 5, Issue 2

Abstract

Purpose: Traditional, orthogonal digital subtraction angiography (DSA) has been the gold standard in the diagnosis of Arteriovenous Malformation (AVM) and in nidus delineation for its treatment using stereotactic radiosurgery (SRS), notably with the GammaKnife. The progressively advanced Time-evolved, CTA, MRA and rotational angiography that are capable of accounting for haemodynamic features of AVM have made them attractive alternatives. However, the maximum intensity projection (MIP) that is a frequent tool in AVM analysis has not been easily integrated with most treatment planning systems. Herein, a novel technique is presented that allows conversion of the MIP images of the nidus to axial images. As such, contours of the AVM nidus can be established more accurately for SRS treatment when DSA is not available. 

Keywords: Delineation; Radiosurgery; AVM; Back-Projection; MRA; MIP

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