Assessing Image Quality and Patient Doses for Automatic Dose Rate Control (ADRC) Logic Using Spectral Shaping Filters in a Flat-Panel Detector Angiography System

The automatic dose rate control (ADRC) logic is sophisticated software programming to control the copper filter thickness in response to x-ray attenuation to reduce patient surface doses. However, there are many fluoroscopy curves determined by the ADRC logic designed by the manufacturers to fit specific types of examination. To verify the preprogrammed fluoroscopy curves for the intended use of the system is extremely necessary and increasingly important. The purpose of this project is to evaluate image quality and patient doses for ADRC logic using spectral shaping filters in a flat-panel detector angiography system by developing objective methods for image quality evaluation under ADRC logic, and developing Monte Carlo based patient doses using x-ray intensity maps. Those two developments have not been mentioned by other publications, and would be helpful to quick image quality assessments and realistic organ dose evaluation.

Project ID:PC9808-0530
External Project ID:NSC98-2314-B182-031-MY2