OBJECTIVE Patients at low risk for acute coronary syndrome (ACS) who present to the emergency department complaining of acute chest pain place a substantial economic burden on the U.S. health care system. Noninvasive 64-MDCT coronary angiography may facilitate their triage, and we evaluated its cost-effectiveness. MATERIALS AND METHODS A microsimulation model was developed to compare costs an...

q RSNA, 2011 Coronary artery disease (CAD) is the most frequent cause of death in many developed countries ( 1 ), and there is a strong need for a noninvasive test that can reliably be used to delineate CAD without the use of ionizing radiation. Coronary magnetic resonance (MR) angiography has a history of nearly 20 years, and considerable technical advances have been made during this period ( ...

Anomalous left coronary artery from pulmonary (ALCAPA) is a rare congenital anomaly with high rate of mortality in first year life. It one the most common causes cardiomyopathy and myocardial ischemia children. In present scenario, computed tomography (CT) angiography sufficient for diagnosis ALCAPA, eliminating need invasive angiography. CT performed infants suspicion ALCAPA technically challe...

Coronary computed tomography (CT) angiography is being increasingly employed for the evaluation of coronary artery disease (CAD). Recent publications using 64-slice CT (1,2), and dual-source CT (3,4) have demonstrated high accuracy for the detection of coronary stenoses in comparison with invasive angiography. The high negative predictive value makes CT angiography an especially attractive tool...

Background: A coronary artery fistula (CAF) is an aberrant vascular contact of arteries with cardiac chambers or any section the pulmonary systemic circulation, which accounts for 0.3% congenital heart disorders. CAFs have been observed to be as common 0.9% at computed tomographic (CT) angiography, greater than previously estimated prevalence 0.002 – invasive angiography.
 Case Summary: 76...

Advances in multidetector CT (MDCT) technology with submillimeter slice collimation and high temporal resolution permit contrast-enhanced imaging of coronary arteries and coronary plaque during a single breath hold. Appropriate patient preparation, detailed technical and technological knowledge with regard to recognition of typical imaging artifacts (such as beam hardening or motion artifacts),...

background the present data show a global increase in the rate of cardiovascular disease. cardiac ct angiography has developed as a fast and non-invasive cardiac imaging modality following the introduction of multi-slice computed tomogaraphy. conclusions the total mean radiation dose to the thyroid and gonads was 0.36 msv, and 96.5 μsv, respectively for the subjects. these values were high for ...