X-ray dosimetry X-ray photometry X-ray spectrometry X-ray therapy atom-tagging cobalt therapy curiescopy curietherapy fluoroscopy interstitial irradiation therapy irradiation irradiation therapy isotope therapy orthodiagraphy photofluorography radiation physics radiation therapy radiobiology radiochemistry radiography radiological physics radiology radiometallography radiometry radiopathology radioscopy radiotechnology radiotherapeutics radium therapy radiumization ray therapy roentgen ray therapy roentgenization roentgenography roentgenology roentgenometry roentgenoscopy roentgenotherapy roentgentherapy spectroradiometry tracer investigation