Radiology Lt border of the heart in CXR is formed by – a) Pulmonary arteryb) Pulmonary veinc) Abdominal aortad) Arch of aortae) Rt ventricles A b B c C ad D ab 💡 Explanation Lt border of the heart in CXR is formed by – a) Pulmonary arteryb) Pulmonary veinc) Abdominal aortad) Arch of aortae) Rt ventricles ✓ Correct Answer: C. ad