title: [Primary prevention in medical surveillance of workers exposed to ionizing radiations: personalized dose limit].
abstract: BACKGROUND
  Italian law requires that occupational physicians for workers exposed to ionizing radiations consider carefully increased sensitivity to cancer in order to define fitness for work. Cancer risk from radiation is proportional to radiation dose, consistent with the so-called linear no-threshold hypothesis.
  
  
  OBJECTIVE
  The aim of this paper was to estimate the annual dose limit for ionizing radiation exposure in workers hypersensitive to cancer so that the occupational risk of cancer is the same as that of reference workers.
  
  
  METHODS
  Relative risks of developing cancer in several situations are multiplied by radiation-induced cancer nominal risk coefficients (ICRP Recommendations) to give cancer sensitivity predictions. It is then possible to estimate the annual dose limit reduction.
  
  
  RESULTS
  Examples of annual dose limit (personalized dose limit) were estimated in several situations in which individuals are prone to cancer or are cancer survivors.
  
  
  CONCLUSIONS
  personalized dose limits makes it possible to define fitness for work and avoid exclusion of these individuals from work.
authors: N.O. Medico Competente, APSS Trento, Trento. fabio.malesani@apss.tn.it
authors: F
authors: F
authors: Malesani
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004307:Dose-Response Relationship, Radiation; D005260:Female; D006801:Humans; D007558:Italy; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000517:prevention & control*; D016273:Occupational Exposure / Q000009:adverse effects* / Q000331:legislation & jurisprudence; D011322:Primary Prevention; D011829:Radiation Dosage; D011835:Radiation Protection / Q000331:legislation & jurisprudence; D011839:Radiation, Ionizing; D012306:Risk; D012907:Smoking / Q000009:adverse effects