Several similar projections utilizing cranial and caudal angulation of the X-ray tube in various obliquities have been described recently for coronary angiography and left ventriculography. These views provide improved visualization of the proximal branches of the left coronary artery, the region of the crux of the right coronary artery, and the left ventricle in the left anterior oblique proje...

While the mechanisms of plaque development in coronary arteries are not yet completely understood, vessel geometry and its influence on hemodynamics are of major importance. This manuscript presents an overview on our method for spatio-temporal modeling of the coronary arteries by fusion of data from x-ray angiography and intravascular ultrasound (IVUS) and elaborates on the aspects of 4-D comp...

Purpose In cardiology the angiography is a method to detect vascular stenosis by using X-ray radiation and contrast medium. There is special equipment, so called C-arms, to produce radioscopic images. An angiography system consists of an X-ray image intensifier (XRII), an X-ray source, and the mechanical structure to position the system around the patient. In general, the measurement and 3-d-re...

introduction: coronary angiography and angioplasty procedures lead to significant radiation exposure of patients. in the current study, the average radiation dose to patients during angiography in the angiography department of shahid-madani hospital was determined. materials and methods: an image intensifier based angiography unit (philips bh 3000) was used for angiography procedures. the accur...

A 74-year-old man with a history of high blood pressure, smoking, and cerebrovascular accident 6 months ago was admitted to our center for chest pain radiating to back. The blood pressure was 140/95 mmHg and pulse was 88/minute. Physical examination revealed an apical systolic murmur. Laboratory tests including evidence of Behcet disease, connective tissue disease, or autoimmune form of vasculi...

BACKGROUND AND PURPOSE To test a new contrast-specific sonography imaging method that offers visualization of the intracranial vasculature in a manner similar to that seen on angiography. MATERIALS AND METHODS Thirty patients (35 sonography studies total) were included in the study after they provided written informed consent. The patients were scanned through the temporal bone window from bo...

AIMS The aim of the present study was to assess the clinical performance of a dual X-ray source multi-slice CT (MSCT) with high temporal resolution to assess the coronary status in patients with an intermediate pretest likelihood for significant coronary artery disease (CAD) without using negative chronotropic pretreatment. METHODS AND RESULTS Dual-source CT (DSCT) angiography (Siemens Defini...

C oronary allograft vasculopathy remains the main limiting survival factor after heart transplantation and the major cause of mortality after the first year post-transplant, ultimately leading to graft loss. 1 Coronary x-ray angiogra-phy is the clinical gold standard and the most widely used diagnostic technique for coronary allograft vasculopathy in the majority of transplant centers. However,...

OBJECTIVES This study sought to evaluate the feasibility of using ultra-low-dose intra-arterial contrast injection for iliofemoral computed tomographic (CT) angiography to follow diagnostic cardiac catheterization. BACKGROUND Cardiovascular interventions such as percutaneous aortic valve replacement require transfemoral delivery of large-bore intra-arterial catheters; therefore, pre-procedura...