Fig. 1
From: Atlas-based analysis of 4D flow CMR: Automated vessel segmentation and flow quantification
Overview of the proposed method. a An atlas is created from one healthy volunteer’s Phase Contrast Magnetic Resonance Angiography (PC-MRA), with 2D planes positioned at multiple locations of interest. b For each input dataset, a 3D PC-MRA is calculated. c The atlas is registered to the input dataset’s 3D PC-MRA in order to fit the vessels and planes from the atlas to the input dataset in one time frame in systole. d The magnitude time frame with the highest contrast in the PC-MRA is registered to every other time frame, the resulting deformations are then applied to the 3D segmentation in order to obtain a 4D segmentation of the vessels. e The flow in the segmented vessels can be visualized and automatically analyzed in each 2D plane