REAL-TIME DETECTION AND DATA ACQUISITION SYSTEM FOR THE LEFT VENTRICULAR OUTLINE

摘要

Dynamic measurements of the left ventricular shape and size are of great importance in car¬diovascular research and clinical practice. The usual method for acquiring these data requires that the left ventricular margin be outlined manually from television or cineradiographic images for on-line storage of the coordinates. Because of the large amounts of data required in left ventricular studies, this task is time consuming and tedious.nTo automate the data acquisition procedure, a real-time contour detection and data acquisition system for the left ventricular outline has been developed using video techniques. The x-ray image of the contrast-filled left ventricle is stored for subsequent processing on film (cineangiogram), video tape or disc. The cineangiogram is converted into video format using a television .camera. The video signal from either the TV camera, video tape or disc is the input signal to the system.