Radiology All of the following are true in chest X ray PA view EXCEPT: A Right ventricle forms the right heart border B Left ventricle forms the left heart border C Cardiothoracic ratio in adults is normally 50% or less than that D Right atrium forms the right heart border 💡 Explanation All of the following are true in chest X ray PA view EXCEPT: ✓ Correct Answer: A. Right ventricle forms the right heart border