Q. What is Mitral Valve and Coronary Arteries?
On the PA view, mitral valve calcification is seen just to the left of the spine, below the position of the aortic valve. The larger the left atrium, the further leftward and caudal is the position of valve calcification. On the lateral view, the valve lies posteroinferior to the aortic valve, below a line drawn form the tracheal bifurcation to the anterior costophrenic angle.
Coronary Arteries
Coronary artery calcification is seen as a plaque or a double line. It is most frequently seen on CXR in the proximal part of the left coronary artery.