title: [Adaptive approximation of outer surface of blood vessels in magnetic resonance angiography].
abstract: In many cases, extraction and visualization of blood vessels in 3D magnetic resonance angiography (MRA) images are important in clinical diagnosis and surgery planning. Thus, this paper proposes a novel method to reconstruct high-accuracy outer surface of blood vessels from the 3D MRA. With the method, we first detect such local regions that contain blood structures from 3D image by using a boundary tracking technique. Second, in different local regions, different optimal isosurface patches are computed to adaptively represent outer surface of the contained blood vessels. Finally, all computed isosurface patches form a high-accuracy surface model for outer surface of the whole blood vessel structure are obtained. Error analysis and experimental results illustrate the effectiveness of the proposed method.
authors.affiliation: Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China. defuding@163.com
authors.forename: Defu
authors.initials: D
authors.lastname: Ding
authors.forename: Bin
authors.initials: B
authors.lastname: Xia
authors.forename: Lisheng
authors.initials: L
authors.lastname: Wang
mesh_terms: D000465:Algorithms; D001808:Blood Vessels / Q000033:anatomy & histology*; D001921:Brain / Q000033:anatomy & histology / Q000098:blood supply; D002560:Cerebrovascular Circulation; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000379:methods*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008962:Models, Theoretical