Intra-Cycle Motion Correction in Coronary CT Angiography
Abstract Coronary computed tomography angiography (CCTA) has demonstrated high diagnostic performance for coronary lesions detection. However, coronary artery motion blurring, related to high or variable heart rate (HR) is a common drawback. Recently, a novel intracycle motion-correction (MC) algorithm has been developed. Aim of the present review is to evaluate the published literature regarding the impact of MC algorithm compared with standard reconstruction on diagnostic performance of CCTA and to integrate the published data with our local experience. The 2 single-center published studies showed a significant...
Source: Current Cardiovascular Imaging Reports - June 17, 2014 Category: Radiology Source Type: research

Cardiac CT and Stent Imaging: Update 2014
Abstract Percutaneous coronary intervention with stent implantation is a common technique for coronary revascularization. Despite the widespread use of drug-eluting stents in-stent restenosis (ISR) is still a major issue. Multidetector row computed tomography angiography of the coronary arteries is a well-established, noninvasive tool for the assessment of the coronary arteries. Stent imaging, however, is a challenging task with relevant rates of nondiagnostic scans due to motion and beam-hardening artifacts. Nevertheless, recent scanners provide excellent results for the exclusion of ISR with a negative predicti...
Source: Current Cardiovascular Imaging Reports - June 15, 2014 Category: Radiology Source Type: research