Improvements in computer speed and processing capability enable rapid replay of coronary injection sequences, as well as evaluation of the results of each intervention and identification of complications such as intraluminal thrombus and dissection. In many laboratories, the availability of high-quality images during catheterization permits diagnostic and therapeutic catheterization to consist of a single procedure, a capability with significant implications for the cost of interventional procedures. In some cases, the conversion to filmless catheterization has resulted in inadequate archiving. Angiograms stored on analog videocassette tape are often inadequate for clinical decision making. Another format, analog optical disks, has been commonly used to replace cine film.
Image quality is better than videotape, and equivalency to film has been reported.
Other proposed systems use data compression to enable storage of complete studies on limited-capacity media. However, high levels of data compression may produce measurable image degradation with an uncertain clinical impact. Inc. All rights reserved. Unauthorized use prohibited.