The development and applications of a system designed to quantify coronary arterial stenosis

The objective analysis of coronary artery stenosis is required for the assessment of interventions in the management of Coronary Artery Disease (CAD). This thesis presents a microcomputer-based system designed to meet this requirement which is easy to use and relatively cheap. The hardware consists of a standard 35 mm cine-projector (International General Electric Company), a rear projection graphics tablet (GTCO Corporation) and microcomputer (Vector Graphic Limited) with printer (Epson Limited). The graphics tablet and projector are mounted into a steel framework which allows an arteriographic image to be cast from the rear of the projector and focused, parallax free, onto the centre of the tablet. The tablet in turn communicates with the computer via a RS232 link. [Continues.]