CT-Base Pulmonary Artery Measurementin the Detection of Pulmonary Hypertension

Abstract

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2015 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension

“…A segmental artery:bronchus ratio >1 : 1 in three or four lobes has been reported to have high specificity for PH [51,52].…”

Importance of pulmonary artery to ascending aorta ratio in chronic obstructive pulmonary disease

“…15 Instead, transthoracic echocardiography (echo) is the most commonly used technique to evaluate PHT. 17 As a limitation of our study, we did not have echo or right heart catheterization results of the patients to correlate with PA/ A. It is noninvasive but it is difficult to make accurate measurements in severe COPD with hyperinflated lungs.…”

Diagnostic accuracy of echocardiography combined with chest CT in pulmonary hypertension

“…5 We chose rPA >1 because it is easy to measure, is not affected by the body surface area and has been evaluated in a number of studies as it was first described. 2 We measured the diameter of the vessel from its outer wall, not its inner wall because we included CT scans without intravenous contrast. 2 We measured the diameter of the vessel from its outer wall, not its inner wall because we included CT scans without intravenous contrast.…”

“…1 Computerized tomography (CT) of the chest has been recently evaluated in the diagnosis of PH but its diag-nostic accuracy is also modest. 2 TTE and CT are complementary imaging techniques. It is possible that a combination of the two may offer a better way of diagnosing PH than either one alone.…”