(A and B) MDCT, sagittal plane showing left anterior descending artery course in the RV cavity during diastolic phase (A), and complete milking of the intra-cavitary segment during systolic phase (B). (C and D) Coronary angiography, right anterior oblique view, cranial angulation, showing the mid left anterior descending artery segment during diastole (C), with complete systolic milking during systole (D).