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Phototherapy radiometers are used to measure light energy used during phototherapy. Usually phototherapy treatment is used for hyperbilirubinemia in newborns. Too much light energy can lead to brain damage. A probe or sensor is attached to the device. The probe contains infra red and visible blocking filter so the reading of non-therapeutic irradiation are not obtained. These probes or sensors are connected to a machine that contains either a meter or digital display showing the amount of light energy. Some models are able to measure the duration of treatment and calculate the accumulated dosage.
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