Review of Radiologic Physics

A-False A-iii absorbed dose alpha particles anode approximately artifacts atomic number attenuation coefficient B-iii B-True beta beta minus decay binding energy cancer characteristic x-rays coils collimator Compton scatter computed tomography crystal curve decay detected detectors Doppler dose equivalent E-True effect electrons emitted entrance skin exposure factor False F film density filtration fluoroscopy focal spot frequency gamma camera gamma rays gradient grid ratio half-life image contrast image intensifier image quality incident increases intensity ionization K-shell Larmor frequency light magnetic field magnetic resonance magnification mammography mass number Match the following measured mrad mrem neutrons noise nuclear medicine nucleus output patient dose photon energy photons pixel positron produced radioactive radiographic radionuclide reduce result scan scanners screen signal spatial resolution subject contrast thickness tion tissue transducer typical ultrasound values velocity voltage wavelength x-ray beam x-ray photon x-ray tube xeroradiography