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State of the art modern CT scanners with a scan rate of up to 320 mm/s can acquire all the images within a 1-second X-ray exposure, avoiding the problems of respiratory motion, cardiac motion and contrast draining from the pulmonary circulation during the study. Even though the actual scan may be completed in 1 second or less, considerable ...
Some tests which are commonly used include a CT scan of the chest, ventilation perfusion scan or a CT angiography (to rule out pulmonary hypertension due to chronic blood clots), pulmonary function test, and a cardiac MRI. Cardiac MRI is the preferred test to evaluate right ventricular structure and function in PAH.
Pulmonary artery hypertension and emphysema as seen on a CT scan with contrast. Signs of pulmonary hypertension on CT scan of the chest are: Enlargement of the pulmonary trunk (measured at its bifurcation). It is, however, a poor predictor of pulmonary hypertension in patients with interstitial lung disease. [62]
A ventilation/perfusion lung scan, also called a V/Q lung scan, or ventilation/perfusion scintigraphy, is a type of medical imaging using scintigraphy and medical isotopes to evaluate the circulation of air and blood within a patient's lungs, [1] [2] in order to determine the ventilation/perfusion ratio.
A computed tomography scan (CT scan), formerly called computed axial tomography scan (CAT scan), is a medical imaging technique used to obtain detailed internal images of the body. [2] The personnel that perform CT scans are called radiographers or radiology technologists.
The accuracy of pulmonary angiography may be higher than clinical examination, arterial blood gas results, and ventilation/perfusion scan. [2] Pulmonary angiography is also used to confirm chronic thromboembolic pulmonary hypertension (CTEPH) and provides a platform for balloon pulmonary angioplasty to treat the disease. [3]
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