Compression of adjacent anatomical structures by pulmonary artery dilation

Left main coronary artery compression by an enlarged pulmonary artery.

Anatomical Variations of Vertebral Artery

Introduction: Vertebral arteries arise from the root of the neck as the first branches from the superior-posterior aspect of the subclavian arteries. They ascend the neck to enter the cranial cavity and supply blood to the brain. Methods: A total of 20 cadavers (in 10 years) were dissected for the study of variations in the origin of the vertebral artery. This study was conducte...

Registration with Adjacent Anatomical Structures for Cardiac Resynchronization Therapy Guidance

The clinical applications and benefits of multi-modal image registration are wide-ranging and well established. Current image based approaches exploit cross-modality information, such as landmarks or anatomical structures, which is visible in both modalities. A lack of cross-modality information can prohibit accurate automatic registration. This paper proposes a novel approach for MR to X-ray i...

Acquired pulmonary stenosis and pulmonary artery compression.

Pulmonary artery compression by a bronchogenic cyst simulating congenital pulmonary artery stenosis.

DS, a 21-year-old woman admitted to the hospital because of dyspnea and pleuritic chest pain for 5 days, had the diagnosis of congenital right PA stenosis since age 6 years, when a systolic precordial murmur was noted. Cardiac catheterization in childhood showed isolated mild right PA stenosis; the mean pressure in the pulmonary trunk was 30 mm Hg, and the mean right PA pressure was 15 mm Hg. S...