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Simulation of contact with surrounding structures by applying external pressures. (a) Concave region of the aortic root (AoR), visible on axial MRI and in surface curvature. (b) Contact with the right atrium (RA) across the atrial septum, visible on 4-chamber MRI and in regional segmentation of surface. (c) Posterior chest wall (CW), visible on 2-chamber MRI and 3-D magnetic resonance angiogram. Abbreviations: LA – left atrium; LV – left ventricle.
