"There is a moderately strong relationship between the size of the segmental pulmonary arteries and mean pulmonary arterial pressure (mPAP)" Detection of Pulmonary Hypertension with Multidetector CT and Echocardiography Alone and in Combination Devaraj A et al. Radiology 2010; 254:609-616 " Measuring pulmonary arterial size by using coronal oblique reformats to calculate the ratio of the cross sectional area of the main pulmonary artery to the diameter of the ascending aorta does not strengthen correlations with mPAP compared with the ratio of the simple axial diameter of the main pulmonary artery to the diameter of the ascending aorta." Detection of Pulmonary Hypertension with Multidetector CT and Echocardiography Alone and in Combination Devaraj A et al. Radiology 2010; 254:609-616 - Bronchial Artery Aneurysm: Etiologies
- Bronchiectasis - Mycotic origin - Osler Weber Rendu sydrome - "By providing thin section transaxial,multiplanar reconstruction, and 3D images, CT angiography using MDCT allows comparable or better images than conventional angiography with respect to the depiction of bronchial or nonbronchial systemic arteries."
Bronchial and Nonbronchial Systemic Arteries in patients with Hemoptysis: Detection on MDCT Angiography Chung MJ et al. AJR 2006;186:649-655 - Pulmonary Artery Stenosis: Etiology
- Systematic vasculitis - Behcet disease - Takayasu arteritis - Inflammatory disease (TB, histoplasmosis) - Mycotic Pseudoaneurysm of the Pulmonary Artery
- Right sided endocarditis - Necrotizing pneumonia - Syphilis - Tuberculosis (Rasmussen pseudoaneurysm) - Pulmonary Artery Aneurysms: Facts
- Rare - May be congenital or required - Syphilis - Pulmonary hypertension is common - Complications are hemoptysis which can lead to rupture and may prove fatal
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