Biophysics / Biomedical Engineering / Computer Aided Design / Quantum Theory / Medical Physics / X Rays / Computers / Computer Simulation / Radionuclide imaging / Theoretical Models / Public health systems and services research / Sensitivity and Specificity / Equipment Design / Equipment Failure Analysis / Detective Quantum Efficiency / Monte Carlo Method / X Rays / Computers / Computer Simulation / Radionuclide imaging / Theoretical Models / Public health systems and services research / Sensitivity and Specificity / Equipment Design / Equipment Failure Analysis / Detective Quantum Efficiency / Monte Carlo Method