The difference between CTPA and pulmonary angiography is usually in the method of examination, the specific injury is also different, and there is also a price difference.

1. CTPA: CTPA is usually a CT pulmonary angiography examination. This examination is similar to CT scanning, where contrast medium is used, followed by three sets of reconstructions done through rapid scanning, which can effectively image the entire pulmonary artery. CTPA is mainly used for the diagnosis of pulmonary embolism. Each examination has its own advantages and disadvantages, and CTPA is no exception. Its disadvantage is that it can only be used for diagnosis and cannot achieve therapeutic effects. Its advantage is that it is non-invasive to the body and the examination speed is relatively fast.

2. Pulmonary Angiography: Pulmonary angiography is usually an invasive interventional examination. It can effectively reach the main trunks of the left and right pulmonary arteries by inserting a catheter through a peripheral vein puncture. Then, by injecting contrast medium through the catheter, it can effectively image the pulmonary arteries. The main purpose of the examination is to determine whether there are any lesions in the pulmonary blood vessels. When performing the examination, it is mainly used for the diagnosis and treatment of acute pulmonary embolism. This examination can usually effectively observe whether there are aneurysms or arteriovenous aneurysms inside the arteries.