X-ray chest manifestations of pulmonary heart disease mainly include: a. X-ray signs of chronic thoracic and pulmonary disorders. X-rays often suggest a previous history of lung-related disease. Cardiovascular changes mainly include: 1. X-ray signs of pulmonary hypertension, including dilated right upper pulmonary artery with a transverse diameter >15 mm, or an increase in anterior-posterior contrast transverse diameter of 2 mm. 2. dilated central pulmonary artery with small peripheral branches. 3. prominent pulmonary artery segments, reflecting the expansion of the arterial trunk and the enlargement of the right ventricle, right atrium and heart. The heart is rotated in the clockwise direction, the heart shadow is mostly mitral, the pulmonary artery segment is protruding and the aortic node is small, and the apical rounding is upturned.