To record the actual radiation dosages, each crew member wore a Personal Radiation Dosimeter that transmitted data to Earth, as well as three passive film dosimeters that showed the cumulative radiation experienced by the crew.
tə ɹᵻkˈoːɹd ðɪ ˈæktʃuːəl ɹˌeɪdɪˈeɪʃən dˈoʊsɪdʒᵻz, ˈiːtʃ kɹˈuː mˈɛmbɚ wˈoːɹ ɐ pˈɜːsənəl ɹˌeɪdɪˈeɪʃən dəsˈɪmᵻɾɚ ðæt tɹænsmˈɪɾᵻd dˈeɪɾə tʊ ˈɜːθ, æz wˈɛl æz θɹˈiː pˈæsɪv fˈɪlm dəsˈɪmᵻɾɚz ðæt ʃˈoʊd ðə kjˈuːmjʊlətˌɪv ɹˌeɪdɪˈeɪʃən ɛkspˈiəɹɪənst baɪ ðə kɹˈuː.