ðɪ ˈɛɹɚ wʌz ɔnðə dˈeɪɾə ˈɛntɹi, jˈuːzɪŋ ɐ pɹˈoʊɾəkˌɑːl nˌɑːt vˈælᵻdˌeɪɾᵻd tʊ ˈɛntɚ mˈoːɹ ʃˈiːldɪŋ blˈɑːks, ðæt ɹɪzˈʌltᵻd ɪn ɪŋkɹˈiːst dˈoʊs ɪnðə tɹˈiːtmənt.
The error was on the data entry, using a protocol not validated to enter more shielding blocks, that resulted in increased dose in the treatment.