(A) Localization of target volume and dose distribution in axial, sagittal, and coronal axis for cRA. Inner line represents CTV, medium line ITV and outer line PTV of the target volume. Contours for heart (yellow) and left ventricle (magenta) are also displayed. (B) Top: myocardial biopsies were taken from the areas as indicated (white circles for CTRL and irradiated regions) using a Vizigo steerable sheath directed by 3D electroanatomic mapping (Carto, Biosense Webster). Bottom: biopsy target region within (cRA; white arrowhead) and at the border zone (control; white arrow) of the cRA area C. Example of biopsies taken from the borderzone (CTRL) and irradiated regions.