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Made Suryatika, Ida Bagus
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Analysis of Radiation Dose Received by Radiation Workers With Physical and Biological Dosimeters in The Radiology Unit of Sanjiwani Hospital Mas Janudinata, Gde Ari; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Made Suryatika, Ida Bagus; Artawan, I Nengah; Trisnawati, Ni Luh Putu
Kappa Journal Vol 9 No 1 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29539

Abstract

This study aims to evaluate the impact of radiation exposure on the health of radiation workers at RSUD Sanjiwani Gianyar over the past five years. The evaluation was conducted through a physical approach, measuring radiation doses using Thermoluminescent Dosimeter (TLD), and a biological approach by analyzing the total leukocyte count and its components, namely neutrophils, lymphocytes, monocytes, and eosinophils. The results showed that the highest radiation dose was received by radiology specialists at 0.921 mSv, followed by medical physicists at 0.905 mSv, and radiographers at 0.894 mSv. This variation reflects differences in radiation exposure levels based on each profession's tasks and positions. Leukocyte and component analysis indicated that all values were within normal ranges. Although statistical tests showed significant differences in neutrophil levels between professions, overall radiation doses and leukocyte levels were within the safe limits set by PERKA BAPETEN No. 4 of 2013. The findings underline that radiation protection measures at RSUD Sanjiwani have been effective in minimizing health risks from radiation exposure. However, regular dose monitoring and health evaluations are necessary to ensure long-term protection for radiation workers.  
Analisis Variasi Gantry Terhadap Distribusi Dosis Radiasi Kanker Otak Dengan Teknik Intensity Modulated Radiation Therapy (IMRT) Dali Sinaga, Ade Nisa; Sutapa, Gusti Ngurah; Amelia, Cory; Made Suryatika, Ida Bagus; Yuliara, Made; Antha Kasmawan, I Gde; Irhas, Rozi
Kappa Journal Vol 9 No 1 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29557

Abstract

Penelitian mengenai Analisis Variasi Gantry Terhadap Distribusi Dosis Radiasi Kanker Otak Dengan Teknik Intensity Modulated Radiation Therapy (IMRT). dengan tujuan, untuk mengetahui pengaruh variasi jumlah sudut gantry terhadap distribusi dosis pada kasus kanker otak berdasarkan nilai HI,CI pada target kanker serta dosis maksimum pada organ at risk (OAR) menggunakan teknik IMRT. Penelitian dilakukan dengan variasi jumlah sudut gantry 4, 5 dan 6 dengan menggunakan 30 sampel. Kemudian dilakukan analisis data dengan menggunakan uji normalitas dengan uji t satu arah. Hasil penelitian menunjukkan bahwa, distribusi dosis pada PTV dengan nilai HI dan CI untuk variasi jumlah sudut 4,5 dan 6 arah sudut gantry adalah 0,118 dan 0,986; 0,116 dan 0,975; 0,108 dan 0,974. Sedangkan distribusi dosis maksimum OAR pada variasi 4,5 dan 6 arah sudut gantry untuk brainstem 4886,55; 4921,47; 4731,23; Eye R 2676,35; 2830,16; 3123,83; Eye L 3226,19; 3268,59; 3162,92; nervus optikus R 2396,23; 2775,52; 2796,94, nervus optikus L, 2939,97; 2983,12; 2912,47; lens R 789,76; 709,76; 717,32; lens L 738,31; 775,33; 724,02; chiasma, 4153,40; 4460,04; 4020,70. Berdasarkan nilai rata-rata tidak terdapat perbedaan antara nilai hasil perhitungan distribusi dosis dengan nilai ketetapan dosis maksimum dalam Radiation Oncology A Question-Based Review. Hasil penelitin ini menunjukkan bahwa perencanaan lapangan 4 arah sudut gantry memiliki hasil distribusi PTV yang lebih baik dan waktu penyinaran yang lebih siangkat dibandingkan dengan perencanaan 5 dan 6 variasi jumlah arah sudut gantry.
Radiation Dose Determination and Body Mass Index (BMI) Evaluation in Abdomen CT Scan Examination Patients Using the Size-Specific Dose Estimate (SSDE) Method Prawistya Putra, I Made Gede Mas; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Made Suryatika, Ida Bagus; Putra Adnyana, I Gusti Agung; Simpen, I Nengah
Kappa Journal Vol 9 No 1 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29592

Abstract

A study has been conducted on determining radiation doses and evaluating body mass index (BMI) in patients undergoing CT-Scan Abdomen examinations using the Size Specific Dose Estimate Method at the Bali Mandara Radiology Installation. One of the factors that influences the radiation dose received by patients is the Body Mass Index (BMI). The Size Specific Dose Estimate (SSDE) method is used to assess radiation doses based on patient size, which is often associated with BMI. This study aims to determine the estimated radiation dose of each patient and evaluate the relationship between BMI and the dose received. This study used a CT-Scan brand SIEMENS SOMATOM PERSPECTIVE (serial number 78068). The population in this study were patients undergoing CT-Scan Abdomen examinations. The sample consisted of several BMI categories, namely thin, normal, overweight, and obese. The analysis was carried out using linear regression to measure the relationship between BMI and SSDE, as well as a one-way t-test to see the difference in the average SSDE value in each BMI category. The results showed that each increase in one BMI category caused an increase in SSDE values ​​of 1,566 mGy. The R² value of 98.56% indicated that the BMI category explained almost all of the variability in SSDE values. However, a one-way t-test statistic showed that there was no significant difference in the average SSDE values ​​in the thin, normal, overweight, and obese categories (F count <F table, so H₀ was accepted). This study showed that patients with higher BMI tended to receive higher radiation doses, but the differences between categories were not statistically significant.
Co-Authors Artawan, I Nengah Cory Amelia Dali Sinaga, Ade Nisa Gusti Ngurah Sutapa I Gde Antha Kasmawan I Nengah Simpen Irhas, Rozi Mas Janudinata, Gde Ari Prawistya Putra, I Made Gede Mas Putra Adnyana, I Gusti Agung Trisnawati, Ni Luh Putu Yuliara, Made