CTpulmonaangiografia

CTpulmonaangiografia, also known as CT pulmonary angiography (CTPA), is a non-invasive medical imaging technique used to visualize the pulmonary arteries and identify blood clots within them. It is a specialized type of computed tomography (CT) scan that combines CT imaging with the injection of a contrast dye into the bloodstream. The contrast dye, which appears bright on X-rays, highlights the blood vessels, allowing radiologists to detect any blockages or abnormalities.

The procedure typically begins with the patient lying on their back on a CT scanner table. A small intravenous catheter is inserted into a vein, usually in the arm. Once the scanner is activated, a rapid injection of iodinated contrast material is administered through the catheter. The CT scanner then rotates around the patient, acquiring a series of cross-sectional images of the chest. These images are reconstructed by a computer to create detailed, three-dimensional views of the pulmonary arteries.

CTPA is primarily performed to diagnose pulmonary embolism (PE), a potentially life-threatening condition where a blood clot travels to the lungs. It can also be used to evaluate other conditions affecting the pulmonary vasculature, such as pulmonary artery aneurysms, arteriovenous malformations, and dissection. The radiation dose from CTPA is comparable to other CT scans, and the risks associated with the contrast dye are generally low, although allergic reactions can occur. This diagnostic tool has become the standard for diagnosing acute pulmonary embolism due to its speed, availability, and high sensitivity and specificity.