title: Instrument for scanning the angular variation of irradiance in ultraviolet phototherapy cabinets.
abstract: An instrument is described that measures irradiance and the angular distribution of the intensity of ultraviolet radiation sources inside phototherapy cabinets. Failed lamps and lamps with higher or lower outputs are readily identified. The measurements are controlled from outside the cabinet, thus reducing the risk to staff from exposure to ultraviolet radiation.
mesh_terms: D002138:Calibration; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D006801:Humans; D008283:Maintenance / Q000379:methods; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D012680:Sensitivity and Specificity; D012984:Software; D014467:Ultraviolet Therapy / Q000295:instrumentation* / Q000592:standards