During the manipulation with radiopharmaceuticals, workers in nuclear medicine always receive certain exposure which is continuously monitored and strictly controlled by relevant national regulatory authorities. This exposure should be minimized following the ALARA principle and be at all times below prescribed limits or reference levels. The paper presents some results of the assessment of radiation doses of nuclear medicine personnel where special attention is paid to the exposure of the extremities and to the skin of hands in particular. It has been observed that the skin dose of some workers may exceed the relevant annual dose limit and therefore some measures should be adopted to reduce this exposure. The situation in the Czech Republic related to the radiation burden of workers in nuclear medicine is outlined and conclusions discussed.

1. International Atomic Energy Agency. (2016). IAEA-TECDOC-1782 Good practice for introducing radiopharmaceuticals for clinical use.
   Retrieved from: http://www-pub.iaea.org/MTCD/Publications/PDF/TE-1782_web.pdf
   Retrieved on: Feb. 12, 2016.
2. International Commission on Radiological Protection. (2007). Publication 103: The 2007 recommendations of the International Commission on Radiological Protection”,
   DOI: 10.1016/j.icrp.2007.10.003
   PMID: 18082557
3. Sources and Effects of Ionizing Radiation, UNSCEAR 2008 Report to the General Assembly with Scientific Annexes, vol. 1, United Nations, New York, 2010
   Retrieved from: http://www.unscear.org/docs/reports/2008/09-86753_Report_2008_Annex_B.pdf
   Retrieved on: Apr. 10, 2016.
4. D. Shauer, O. W. Linton, “National Council on Radiation Protection and Measurements Report shows substantial medical exposure increase,” Radiology, vol. 253, no. 2, pp. 293-296, 2006.
   DOI: 10.1148/radiol.2532090494
   PMid: 19864524
5. O. Bělohlávek, J. Potreba: PET/CT. The Czech Nuclear Medicine Society (ČSNM),
   Retrieved from: http://csnm.cz/about-domain/pet-ct-need
   Retrieved on: Apr. 10, 2016.
6. K. Petrová, Personal monitoring and health supervision on radiation workers,State Office for Nuclear Safety, Prague 2014 (in Czech).
7. J. Hudzietzová, et al., “Assessment of the local exposure of skin on hands of nuclear medicine workers handling ¹⁸F-labelled radio-pharmaceuticals: Preliminary Czech study,” Radiat. Prot. Dosimetry, vol. 171, no. 4, pp. 445-452, 2016.
   DOI: 10.1093/rpd/ncv441
   PMid: 26503855
8. J. Hudzietzová et al., “The radiation exposure of workers` hands during the preparation and administration of radiopharmaceuticals labelled with a radionuclide ¹⁸F,” Ces. Radiol, vol. 68, no. 4, pp. 318 – 322, 2014.
9. European Radiation Dosimetry Group e. V., ORAMED: Optimization of Radiation Protection of Medical Staff, Chapter 4: Extremity dosimetry in nuclear medicine, EURODAS Report 2012-02. Braunschweig, Germany, 2012.
   Retrieved from: http://www.eurados.org/~/media/Files/Eurados/documents/EURADOS_Report_201202.pdf
   Retrieved on: Jan. 20, 2016
10. F. Vanhavere, “Assessing and reducing exposures to nuclear medicine staff,” ORAMED, Seventh Framework Programme, 2008-2011.
    Retrieved from: https://rpop.iaea.org/RPOP/RPoP/Content/Documents/Whitepapers/conference/S3-Vanhavere-Assessing-and-reducing-exposures.pdf
    Retrieved on: Apr. 15, 2016.
11. R. M. Sánchez et al., “Evaluation of an automated FDG dose infuser to PET-CT patients,” Radiation Prot. Dosimetry, vol. 165, no. 1-4, pp. 457 – 460, 2015.
    DOI: 10.1093/rpd/ncv077
    PMid: 25821215
12. P. Covens et al., “The introduction of automated dispensing and injection during PET procedures: A step in the optimization of extremity doses and whole-body doses of nuclear medicine staff,” Radiation Prot. Dosimetry, vol. 140, pp. 250 - 258, 2014.
    DOI: 10.1093/rpd/ncq110
    PMid: 20335185
13. V. Antic et al., “Radiation exposure to nuclear medicine staff involved in PET/CT practice in Serbia,” Radiation Prot. Dosimetry, vol. 162, pp. 577 - 585, 2014.
    DOI: 10.1093/rpd/ncu001
    PMid: 24464817