Electronic Theses and Dissertation

Penelitian ini dilakukan di Instalasi Radiologi Rumah Sakit swasta tipe C di Tebing Tinggi dengan tujuan menghitung dosis serap radiasi pada pemeriksaan thorax berdasarkan tingkatan usia, serta membandingkannya dengan standar yang ditetapkan oleh BAPETEN. Data yang dikumpulkan meliputi usia, jenis kelamin, posisi pemeriksaan, jarak penyinaran (cm), tegangan (kV), arus (mA), dan waktu penyinaran (s). Perhitungan dilakukan secara matematis menggunakan persamaan untuk dosis paparan dan dosis serap radiasi. Hasil menunjukkan bahwa rata-rata dosis serap radiasi berkisar antara 0,36 mGy hingga 0,46 mGy. Jika dibandingkan dengan standar BAPETEN, kelompok usia anak-anak dan remaja akhir menunjukkan nilai dosis serap radiasi yang diterima sesuai dengan batas standar yang ditetapkan. Namun balita, remaja awal, dewasa awal, dewasa akhir, lansia awal, lansia akhir dan manula menunjukkan nilai dosis serap radiasi yang diterima melebihi standar. Ketidaksesuaian nilai dosis serap yang diterima disebabkan oleh tidak adanya penyesuaian faktor eksposi terhadap ukuran tubuh dan kondisi klinis masing-masing pasien. Oleh karena itu, diperlukan penerapan protokol pemeriksaan yang lebih personalisasi agar risiko efek biologis akibat radiasi dapat diminimalkan tanpa mengurangi kualitas diagnostik citra yang dihasilkan.
Kata Kunci: Dosis Serap Radiasi, Thorax, Tingkatan Usia, BAPETEN, Faktor Eksposi.

This study was conducted at the Radiology Installation of a type C private hospital in Tebing Tinggi with the aim of calculating the radiation absorbed dose in thorax examination based on age level, as well as comparing it with the standards set by BAPETEN. The data collected included age, gender, examination position, irradiation distance (cm), voltage (kV), current (mA), and exposure time (s). Calculations were performed mathematically using equations for exposure dose and radiation absorbed dose. The results showed that the average radiation absorbed dose ranged from 0.36 mGy to 0.46 mGy. When compared to the BAPETEN standard, the age groups of children and late adolescents showed the value of radiation absorbed dose received in accordance with the standard limit set. However, toddlers, early adolescents, early adults, late adults, early elderly, late elderly and seniors showed radiation absorbed dose values received exceeding the standard. The discrepancy in the value of the absorbed dose received is due to the absence of adjustment of the exposure factor to the body size and clinical condition of each patient. Therefore, it is necessary to implement a more personalized examination protocol so that the risk of radiation-induced biological effects can be minimized without reducing the diagnostic quality of the images produced. Keywords: Radiation absorbed dose, thorax, age level, BAPETEN, exposure factor.