Fig. 7
From: Design and 3D printing of variant pediatric heart models for training based on a single patient scan
Boolean operations as essential part of the design process of 3D heart models including the myocardium. a Heart muscle visible on axial CT scan. b Segmentation of the heart muscle (red) performed by local thresholding techniques. c Combination of the hollow blood volume and the myocardium by a series of Boolean operations maintaining the correct anatomical intracardiac structure of the ventricles as well as the smooth outer surface of the myocardium