Radiographic exposure conditions and dosimeters and recording systems in cardioangiography

As radiological technologists, we play important roles in maintaining high-quality images in cineangiography and providing a variety of information for conducting efficient examinations and minimizing exposure doses to operators and patients in cardiac examinations. To perform these tasks rapidly and efficiently, we need to record numerous data concerning each examination accurately, such as the radiographic conditions and exposure. We evaluated the accuracy of radiographic information regarding image quality and area exposure product meter, and devised an automatic recording system for these data. Our experiments indicated that each system was accurately measurable for x-ray tube voltage, conditions of contrast media injected, and area exposure products. Connecting a personal computer to the x-ray apparatus, the injector, and area exposure product meter enabled us to record a variety of information automatically. This study indicates that we can easily and accurately record the radiographic conditions and exposure dose of patients. This system is also useful for regulating image quality and exposure dose. (author)