Lung perfusion in patients with pulmonary hypertension: comparison between MDCT pulmonary angiography with minIP reconstructions and 99mTc-MAA perfusion scan.

Objectives: Alterations in lung perfusion are a well-known feature of pulmonary hypertension (PH) seen on nuclear medicine studies. Abnormal radiotracer distribution in patients with PH may be caused by arterial thromboembolic occlusion, like in chronic thromboembolic pulmonary hypertension, by parenchymal destruction as in interstitial lung disease and pulmonary emphysema or by distal arteriopathy, like in idiopathic pulmonary arterial hypertension and other nonembolic forms. The different imaging pattern on radionuclide perfusion studies represents an important element for differential diagnosis.

Cardiac anomalies in Turner Syndrome.

This is the case of a 30-year-old woman with Turner Syndrome, with Mosaicism, exhibiting a bicuspid aortic valve with aortic stenosis, ascending aortic dilatation, pseudocoarctation of the aorta, left superior vena cava and lusoria subclavian artery. The successful surgical procedure consisted of the replacement of the aortic root and ascending aorta with a composite valved graft.

Descending thoracic aortic diseases: stent-graft repair.

Purpose: To evaluate endovascular treatment of descending thoracic aorta with commercially available self-expanding stent-grafts.

Materials And Methods: Seventy patients with aortic dissection, intramural hemorrhage, degenerative and posttraumatic aneurysm, penetrating atherosclerotic ulcer, and pseudoaneurysm underwent endovascular treatment. Eleven patients had impending rupture and were treated on an emergency basis.

Indications for, timing of, and results of catheter-based treatment of traumatic injury to the aorta.

Objective: The optimal treatment for and timing of surgery to repair traumatic aortic injury are still controversial. Endovascular treatment is a viable option in patients with both acute and chronic aortic trauma. However, appropriate patient selection criteria, treatment timing, and long-term durability of endovascular repair remain to be defined.