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Radiat Prot Dosimetry. 2014 Nov;162(1-2):101-4. doi: 10.1093/rpd/ncu238. Epub 2014 Jul 27.

The patient as a radioactive source: an intercomparison of survey meters for measurements in nuclear medicine.

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Department of Nuclear Medicine, University Hospital of Cologne, Cologne, Germany
Department of Nuclear Medicine, University Hospital of Cologne, Cologne, Germany.


In this work, the radiation exposure in nuclear medicine is evaluated by measuring dose rates in the proximity of patients and those in close contact to sources like capsules and syringes. A huge number of different survey meters (SMs) are offered commercially. This topic has recently gained interest since dosemeters and active personal dosemeters (APD) for the new dose quantities (ambient and directional dose equivalent) have become available. One main concern is the practical use of SMs and APD in daily clinical routines. Therefore, the radiation field of four common radiopharmaceuticals containing (18)F, (90)Y, (99m)Tc and (131)I in radioactive sources or after application to the patient was determined. Measurements were carried out with different SMs and for several distances. Dose rates decline significantly with the distance to the patient, and with some restrictions, APD can be used as SMs.

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