Pengukuran Kontaminasi Iodine (I-131) pada Staf yang Bekerja di Fasilitas Kedokteran Nuklir

Risalatul Latifah (Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Johan Andoyo Effendi Noor (Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Mohammad Robet Kamel Rizqi Ilahil Aziz (Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Hafizhudin Kafaka (Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Bunawas Bunawas (Nuklindo-Lab Koperasi JKRL, Plaza Ciputat, Tangerang Selatan , Banten, Indonesia)

BULETIN FISIKA
Vol 25 No 2 (2024): BULETIN FISIKA

The increasing use of the radiopharmaceutical Iodine-131 (I-131) in nuclear medicine services has implications for the potential for internal radiation received by workers. I-131 has high volatility so it has the potential to become an air contaminant and be inhaled by nuclear medicine staff as internal radiation exposure. This study aims to estimate I-131 contamination in staff at a nuclear medicine facility using a gamma spectrometer. Measurements of I-131 activity in the thyroid were carried out on 38 staff including medical physicists, nuclear medicine specialists, radiographers, radio-pharmacists, nurses, house attendants, and cleaners. The I-131 activity value measured in the staff's thyroid had an activity value range of 13.1 – 238.2 Bq in 13 nuclear medicine staff. Meanwhile, for 25 other medical staff, the I-131 activity values ??measured in the thyroid had activity values ??below the detection limit of the device (14.2 ± 4.3 Bq for men and 11.8 ± 3.5 Bq for women). The highest internal dose rate measured in the thyroid of Pramu Husada nuclear medicine staff and radiopharmaceuticals was 0.1-0.5 mSv/year. This value is still below the dose limit value for internal radiation.