A Comparison of the Pulmonary Valve, Main Pulmonary Artery, and Branch Pulmonary Artery Measurements by Echocardiography and Computed Tomography Scan

Right coronary artery arising from the main pulmonary artery: evaluation with 2-dimensional transthoracic echocardiography and multislice computed tomography.

A 30-year-old man was admitted to our hospital with incidental chest pain. Two-dimensional transthoracic echocardiography revealed a dilated vessel in front of the aorta. Color-f low Doppler echocardiographic imaging showed a retrograde, chief ly diastolic f low from near the pulmonary valve into the main pulmonary artery (Fig. 1) and adequate intercoronary collateral vessels within the ventric...

Pulmonary valve and pulmonary artery myxomas

Hybrid pulmonary valve implantation: injection of a self-expanding tissue valve through the main pulmonary artery.

An 8-year-old (35 kg) boy presented with progressive right ventricular outflow tract enlargement (28 mm) and progressive tricuspid regurgitation after transannular repair of tetralogy of Fallot and was scheduled for pulmonary valve replacement. To spare reoperation on full sternotomy, a transverse mini-thoracotomy through the third intercostal space was used to implant an injectable 29-mm stent...

Computed tomography and pulmonary measurements.

Computed tomography (CT) was first developed to measure accurately radiographic density, rather than as a method of imaging. Although subsequent development concentrated on the imaging potential of the method, some recent studies have used the ability of the method to quantify radiographic density, to provide precise measurements of lung regions and infer differences in regional properties. CT ...

Left Main Pulmonary Artery

CONGENITAL ABSENCE of a main pulmonary artery branch is now a wellrecognized clinical entity, more than 60 cases having been reported in the literature. Diagnosis has heretofore been based primarily oln radiologic findings' in both routine x-rays and angiocardiography. Physiologic studies of pulmonary function, including differential bronchospirometry, however, provide valuable diagnostic infor...