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Pemanfaatan energi surya sebagai sumber energi terbarukan menjadi salah satu alternatif untuk mengurangi ketergantungan terhadap energi fosil dan meningkatkan efisiensi energi pada sektor domestik. Salah satu aplikasi yang berpotensi dikembangkan adalah sistem pemanas air tenaga surya yang memanfaatkan kolektor termal dengan optimasi penyerapan radiasi. Penelitian ini bertujuan merancang dan menganalisis kinerja sistem pemanas air tenaga surya berbasis reflektor cermin datar dan pipa tembaga ؽ inch dengan media penyimpanan Solar Cube berkapasitas 25 liter, serta mengevaluasi pengaruh variasi sudut reflektor terhadap temperatur air, energi panas, dan efisiensi kolektor. Metode penelitian yang digunakan adalah penelitian rekayasa dengan pendekatan eksperimental. Sistem diuji menggunakan variasi sudut reflektor 20°, 30°, dan 40° pada kondisi cuaca cerah dan mendung. Pengukuran dilakukan setiap 30 menit pada rentang waktu 08.00–16.00 WIB dengan parameter meliputi temperatur air, kenaikan temperatur (ΔT), energi panas yang dihasilkan, dan efisiensi kolektor. Hasil penelitian menunjukkan bahwa sistem yang dirancang mampu beroperasi dengan baik dan memanfaatkan energi radiasi matahari sebagai sumber panas utama. Secara deskriptif, sudut reflektor 30° memberikan performa terbaik dengan temperatur maksimum sebesar 50,5°C dan kenaikan temperatur 21,4°C pada cuaca cerah, serta temperatur maksimum 40,8°C dan kenaikan temperatur 11,8°C pada cuaca mendung. Energi panas tertinggi mencapai 2.239.510 J dengan efisiensi kolektor sebesar 40,66% pada cuaca cerah dan 38,11% pada cuaca mendung. Namun, hasil uji One-Way ANOVA menunjukkan bahwa perbedaan antar variasi sudut reflektor belum signifikan secara statistik (p>0,05). Sistem ini berpotensi diterapkan sebagai alternatif pemanas air hemat energi dan ramah lingkungan untuk kebutuhan rumah tangga maupun usaha skala kecil.

The use of radiation-based medical equipment such as CT Scan poses potential risks of radiation leakage that may endanger patients, medical personnel, and the surrounding environment if not properly managed. This study aims to analyze radiation safety policies in anticipating radiation leakage in the CT Scan unit of Royal Prima General Hospital Medan, covering policy frameworks, physical protection measures, implementation challenges, and supervision and evaluation systems. This research employed a qualitative approach with a case study design. Data were collected through in-depth interviews, observations, and document reviews related to radiation safety policies. The results indicate that radiation safety policies at Royal Prima General Hospital Medan have referred to BAPETEN regulations and international standards, particularly in the structural protection of the CT Scan room, which has been proven effective in maintaining radiation exposure levels below the permissible limits. However, policy implementation still faces several obstacles, including budget limitations, non-compliance of some medical staff with the use of personal protective equipment, and suboptimal discipline in adhering to standard operating procedures. Supervision and evaluation have been conducted internally by certified Radiation Protection Officers and externally through periodic inspections by BAPETEN, yet further strengthening is required in terms of staff behavior and safety culture. In conclusion, radiation safety policies have been technically effective, but continuous improvement in compliance, supervision, and safety culture among medical personnel is essential to sustainably minimize the risk of radiation leakage.

Penelitian ini bertujuan untuk menganalisis pengaruh bentuk bukaan terhadap kondisi termal bangunan Masjid Jami Al-Hurriyah di Jakarta Selatan. Penelitian menggunakan metode deskriptif kualitatif dengan dukungan data kuantitatif sebagai data pendukung untuk memperkuat analisis kualitatif, bukan untuk pengujian statistik. Teknik pengumpulan data meliputi observasi lapangan, pengukuran suhu udara menggunakan termometer digital, serta analisis visual terhadap pola aliran udara pada setiap lantai bangunan. Hasil penelitian menunjukkan bahwa: (1) bukaan yang terbatas di lantai dasar menyebabkansirkulasi udara tidak optimal dengan suhu berkisar antara 27,6–29,3°C; (2) penggunaan bukaan lebar berbahan kaca di lantai satu meningkatkan suhu ruang hingga 29,1°C akibat paparan radiasi matahari; dan (3) keberadaan bukaan vertikal berupa skylight di lantai dua mampu menciptakan mekanisme stack ventilation yang lebih efektif dengan suhu ruang berkisar antara 26,8–27,3°C. Meskipun demikian, seluruh lantai bangunan belum memenuhi standar kenyamanan termal berdasarkan SNI, yaitu 22,8–25,8°C. Implikasi dari penelitian ini menekankan pentingnya penerapan strategi desain pasif, seperti optimalisasiventilasi silang, pengendalian radiasi matahari melalui elemen peneduh, serta pemilihan material bangunan yang mampu mengurangi perpindahan panas, guna meningkatkan kenyamanan termal pada bangunan masjid di iklim tropis.

Penelitian ini bertujuan untuk merancang dan merealisasikan antena mikrostrip patch berbentuk segitiga (triangular) yang bekerja pada frekuensi 1800 MHz, sebagai penguat jaringan internet di kawasan Kebun Raya Balikpapan. Lokasi tersebut diketahui memiliki kualitas sinyal yang kurang baik untuk beberapa provider. Antena yang dirancang menggunakan dua konfigurasi, yaitu MIMO 8x8 dengan teknik pencatuan langsung dan array 8x1, yang kemudian disimulasikan menggunakan CST Studio Suite 2019 dan diuji performansinya menggunakan metode Speedtest. Hasil simulasi menunjukkan bahwa antena 8x8 memiliki nilai VSWR sebesar 1,50, return loss -12,96 dB, dan gain 4,06 dBi dengan pola radiasi omnidirectional. Sementara itu, konfigurasi 8x1 array menunjukkan nilai VSWR 1,24, return loss -19,21 dB, dan gain 6,46 dBi, juga dengan pola radiasi omnidirectional. Hasil pengujian di lapangan dengan tiga kondisi tanpa antena eksternal, antena MIMO dan antena array 8x1 didapatkan hasil bahwa antena array 8x1 memberikan kecepatan unduh tertinggi mencapai 17,227 Mbps, unggah 4,072 Mbps, Jitter 34,9 ms  dan packet loss 14,18 % sedangkan antena MIMO 8x8 memberikan kecepatan unduh tertinggi mencapai 13,77 Mbps, unggah 2,462 Mbps, Jitter 49,9 ms  dan packet loss 18,43%. Kesimpulannya, kedua jenis antena eksternal yakni MIMO 8x8 dan array 8x1 mampu meningkatkan performa jaringan secara signifikan dan dapat menjadi solusi efektif untuk daerah dengan sinyal lemah. Antena ini diharapkan dapat memberikan kontribusi terhadap akses internet yang lebih stabil di area public yang sangat luas.

X-ray radiation has been widely used in the medical field for both diagnosis and cancer therapy. However, its biological impact on healthy and cancerous tissues remains a major concern in clinical practice. This study aims to evaluate the biological effects of X-ray exposure, including DNA damage mechanisms, cellular responses, and long-term effects on healthy tissues, as well as its effectiveness in killing cancer cells. A meta-analysis was conducted on studies investigating the effects of X-ray radiation on various tissue types. The findings indicate that while X-rays are effective in destroying cancer cells, uncontrolled exposure can lead to genetic mutations and carcinogenesis in healthy tissues. Therefore, the use of X-rays in cancer therapy must consider optimal dosage to maximize therapeutic effects while minimizing risks to healthy tissues.

We as humans often skip our cell phones and use them for too long as they are always around us and a part of our lives. Excessive and improper use of cell phones, however, can cause various negative impacts, one of which is a decline in health. Cell phones emit radio frequencies when in use, which produces excessive radiation that can cause many side effects, such as disrupting sleep patterns and sleep quality. This study aims to determine how cell phone radiation affects the human body when falling asleep. This research was conducted using a qualitative method, using a descriptive approach and analyzing previous literature. The results showed that exposure to electromagnetic radiation from cell phones can affect a person's sleep quality, especially for those who use them too often. The level of influence is different for each person, but this radiation is not strong enough to cause serious effects like X-rays because it is not ionized. Nevertheless, it can cause sleep problems and headaches. It is recommended to keep a safe distance from cell phones while sleeping and limit cell phone use before bedtime to reduce the risk.

Photovoltaic (PV) systems are a promising renewable energy source due to their ease of installation, eco-friendliness, and abundant solar radiation availability. Indonesia has a theoretical potential of 4.625 kWh/m² and a practical potential of 3.767 kWh/kWp; however, as of September 2021, its installed capacity was only 194 MW. Land constraints have led to the development of floating PV systems, which reduce land usage and enhance module efficiency due to lower temperatures above water. Nonetheless, PV systems face challenges from solar radiation intermittency, influenced by cloud opacity, causing output power fluctuations. This study maps cloud opacity patterns on Kodingareng Island based on dry and rainy seasons using 2020 BMKG data. Results indicate that output power during the dry season is more stable than in the rainy season due to lower cloud cover. Conversely, thick cloud cover during the rainy season reduces solar radiation reaching PV modules, resulting in fluctuating power output. Thus, floating PV systems demonstrate better energy availability during the dry season. This study highlights the importance of understanding cloud opacity patterns in planning floating PV systems to address the challenges of solar radiation intermittency.

Sunlight as a renewable energy source that produces heat energy from solar radiation. Radiation is the propagation of energy without an intermediary substance, so that solar energy can reach the earth's surface through radiation due to the vacuum between the Earth and the Sun. Radiation is the only energy that can propagate through a vacuum and reach the earth's surface through direct radiation, diffuse radiation, and total radiation. Solar panels are devices that can convert sunlight into electricity. The study aims to understand the effectiveness of solar panels in generating electricity, identify factors that affect the performance of solar panels in residential environments, and assess the utilization of Energy from Solar Panels that Can Reduce Monthly Electricity Costs at Home. The research methodology used is qualitative. The results of this study, the utilization of solar panels in residential environments shows varying effectiveness, Environmental factors such as temperature, lighting, cleanliness, and extreme weather conditions play an important role in the performance of solar panels in households, Utilization of solar panel energy in households can reduce monthly electricity costs.    

This study examines the impact of electromagnetic radiation exposure from Extra High Voltage Overhead Transmission Lines (EHV OTL) on human health in the Banten region, Indonesia. SUTET, which operates at a voltage of 500 kV, generates an electromagnetic field that can affect the health of the surrounding community. The research was conducted through in-depth interviews with 30 respondents, consisting of residents around the SUTET, medical personnel, and health experts. The interview results showed that 70% of respondents were concerned about the health impacts of SUTET, with the most common complaints including headaches (45%), sleep disturbances (30%), and chronic fatigue (25%). In addition, the majority of respondents felt they did not receive sufficient information regarding the safe exposure limits to electromagnetic fields. Nevertheless, the public's knowledge about the long-term effects of electromagnetic fields is still limited. The thematic analysis found a gap in information between the public and existing regulations. This research implies the need for better educational measures from the government and related institutions regarding the dangers of SUTET and electromagnetic radiation. Furthermore, it is recommended that further research be conducted to establish safe exposure limits to electromagnetic fields in Indonesia, as well as to formulate more effective policies to protect public health around SUTET transmission lines.

Gelombang elektromagnetik merupakan perpaduan dari medan listrik dan medan magnet. Gelombang elektromagnetik dapat merambat melalui atau tanpa adanya medium ambat. Medan magnet Extremly Low Frequency memiliki frekuensi < 300 Hz. Dengan frekuensi yang rendah ini, membuat gelombang ELF mampu menembus beberapabahan diantaranya tanah, air hingga beton dengan baik. Salah satu manfaat dari gelombang ELF yaitu dapat dimanfaatkan untuk mengawetkan bahan pangan. Bahan pangan yang sering dijumpai, kerap memiliki daya tahan atau masa simpan yang terbatas, gelombang ELF ini dapat dimanfaatkan untuk menambah daya tahan atau masa simpan bahan makanan seperti tempe, buah buahan dan juga ikan. Medan magnet ELF (dapat memperpanjang masa simpan ikan dengan cara menjaga pH ikan. Mekanisme ELF dalam menambah daya simpan ikan yaitu dengan cara menajaga atau mempertahankan pH ikan agar daya simpannya semakin lama tanpa merusak fisik ikan sehingga masih layak konsumsi. Metode yang dilakukan pada penelitian kali ini yaitu study literatur. Study literatur dilakukan dengan mengumpulkan berbagai macam sumber literatur baik nasional maupun internasional yang digunakan untuk mencari data dan hasil penelitian. Dari data data yang diperoleh dalam litertaur dapat ditarik kesimpulan dimana gelombang elektromagnetik Extremly Low Frekuensi dapat menambah usia simpan ikan dengan  mempertahankan pH sehingga mikroba tidak mudah berkembang biak.

Thorax radiology examination in children is one of the most frequently performed examinations in hospitals. However, the radiation used in this examination can potentially disrupt the growth and function of the child's imperfect organs. Therefore, patient radiation protection is very important to optimize the radiation dose received. The Nuclear Energy Regulatory Agency (BAPETEN) has set reference level values ​​in the form of IDRL (Indonesia Reference Level) for Diagnostic Radiology, including CT-Scan, Mammography and Fluorescence, as well as DRL (Diagnostic Reference Level) values ​​for children's thorax. The radiation dose received by the patient must be considered to avoid negative effects on the child's growth. This study aims to determine the measurement of radiation dose on chest radiography examinations of children. In this study, we will compare the radiation dose received by pediatric thorax patients based on the radiation dose standards set by UNSCEAR in 2000. Apart from that, we will also compare the radiation dose received by pediatric thorax patients with other studies. It is hoped that the results of this research will provide useful information and input for hospital diagnostic services in optimizing the radiation dose received by pediatric patients.

Background: Analysis of Radiation Exposure Levels in the Thyroid Area of ​​Interventional Cardiology Doctors During Percutaneous Coronary Intervention (PCI) Diagnostic Examinations in the Cath Lab Room at Dr Soedarso Pontianak Hospital, is research related to patient examinations in the Percutaneous Coronary Intervention Diagnostic Room. The main object in this research is the doctor who examines or treats patients in the room. Researchers wanted to see how many doses of radiation exposure were received by officers examining patients. Method: The research used in this research is quantitative methods. Quantitative research is research that emphasizes analysis on numerical data processed using statistical methods. Based on the type of research, this quantitative research leads to analytical (inferential) research, namely analyzing the relationship between variables by testing hypotheses. The object of focus in this research is an Interventional Cardiology doctor, using 30 patients who have received treatment from a doctor in the cath lab room then the data analysis process uses the measurement results from the pen dose, by conducting research for ten days from 10 August 2023 - 17 August 2023 Results: The results obtained from the average value of radiation dose exposure received by Dr. Interventional Cardiology in the Cath Lab Room at Dr. Soedarso Pontianak Hospital while examining 30 patients, were 0 Sv or the equivalent of 0.000 mSv. Based on these results, it was concluded that the PPE used in the cath lab room at Soedarso Regional Hospital was in accordance with applicable regulations.  Conclusion: Based on the data that has been analyzed, it can be concluded that the average value of radiation dose exposure received by Dr. Interventional Cardiology in the Cath Lab Room at Dr. Soedarso Pontianak Hospital while examining 30 patients, is 0 Sv, and is equivalent to 0.000 mSv. Based on the average value of the exposure dose received, which is 0 Sv, the PPE used can reduce the radiation exposure received by doctors. The personal protective equipment includes: Hat, Google Glasses, Thyroid, Apron and protective screen used in accordance with applicable regulations can reduce radiation exposure received by cardiology doctors in the cath lab room at Dr Soedarso Hospital Pontianak.    

This study aims to determine the motivation for radiographers' compliance with the personal radiation dose monitoring tool Thermoluminescence Dosimeter at the Radiology Installation of Pertamedika Ummi Rosnati Hospital Banda Aceh. This research is a descriptive study with an observational or non-experimental design with a cross-sectional design and a survey approach with 4 radiographers as respondents to determine the level of motivation for radiographers' compliance and the factors that influence the motivation of radiographers' compliance with the personal thermoluminescence dosimeter radiation dose monitoring tool. Data analysis was carried out univariately. The results of this study indicate that there is motivation for radiographers' compliance with the use of personal thermoluminescence dosimeter radiation dose monitoring tools, namely 75%. and the rest were not motivated by compliance with the use of a personal thermoluminescence dosimeter radiation dose monitoring device, namely 25%, with the characteristics of the respondents being mostly female, 50%.  and the remaining 50% are male, and the majority of respondents with an average age of 25-35 is 75%.  and the remaining 25% with respondents aged 35-45

Research with literature studies is still rarely carried out, therefore in this article we want to know about the External Radiation Radiotherapy Technique in Cervical Cancer Cases with 3D-CRT (3-Dimensional Conformal Radiation Therapy): This literature discusses the application of the 3D-CRT external radiation radiotherapy technique in treatment cervical cancer. 3D-CRT is a method that allows external radiation exposure from more than one side,possiblemore appropriate radiation dose according to the shape and location of the tumor. This study also lists other techniques such as Brachytherapy, IMRT, and 2D in the treatment of cervical cancer. Photon Dose Distribution Using 3D-CRT and IMRT Techniques in Cervical Cancer Therapy: This research discusses photon dose distribution in the Treatment Planning System (TPS) using 3DCRT and IMRT techniques for cervical cancer therapy. This provides insight into the comparison between the two techniques in delivering appropriate radiation doses to the tumor target. 6 MV Energy Linac Radiotherapy Against Cervical Cancer: This journal discusses the use of radiotherapy on a Linac aircraft with a 6 MV energy photon beam using the 3DCRT technique in the treatment of cervical cancer. This technique helps deliver the right dose of radiation according to the target area. The literature above provides information about external radiotherapy techniques, including 3D-CRT, in the treatment of cervical cancer. They help understand the role and application of this technique in cervical cancer treatment.    

The Effect Of Use Of Lung Mask Fixation On The Accuracy Of Targeted Irradiation In Lung Cancer Intensity Modulated Radiation Therapy (Imrt) Technique In The Department Of Radiation Oncology, Jakarta General Hospital. Lung cancer is the uncontrolled growth of abnormal cells in one or both lungs. While normal cells in the lungs usually develop and reproduce to form healthy lung tissue, these abnormal cells actually reproduce more quickly and are never able to become normal lung tissue. As a result, lumps of cancer cells are formed, which are often referred to as tumors. (4) Radiotherapy is a form of therapy that has been proven to be useful in treating cancer. The aim of radiotherapy is to provide safe, accurate and efficient radiation doses to treat various types of cancer and also non-malignant disorders (7). Carrying out radiotherapy for lung cancer involves the use of immobilization devices, one of which is a thermoplastic mask. This mask functions to reduce the patient's body movements, including movements caused by breathing (9). Verification is a critical stage in the radiotherapy process. The purpose of this verification is to ensure that there are no significant differences in the exposure carried out (14). Giving the right dose of radiotherapy radiation is very necessary to achieve successful therapeutic treatment. The accuracy of dosing and the accuracy of the patient's position influence the dose distribution that will be received by the patient. This verification is based on the International Atomic Energy Agency (IAEA) Human Health Series No. 31 of 2016 with a displacement value of 0.3cm (15). EPID (Electronic Portal Imaging Device) is an additional device connected to the LINAC (Linear Accelerator) radiotherapy device. EPID functions as a verification tool for radiation dose and geometry which is very important in the radiotherapy process (16). The accuracy of the patient's position during radiation treatment greatly influences the accuracy of the IMRT technique. Before irradiation, verification is carried out using an EPID (Electronic Portal Imaging Device) to ensure the correct target position on the tumor. This helps measure the x, y, and z axis coordinates along the radiation area before the radiation procedure begins.

Background: Treatment of radiation therapy in patients with cervical cancer citobleeding at the Radiotherapy Installation of the NTB Provincial Hospital uses a 2D technique with 2 radiation fields, namely AP (Antero Posterior) and PA (Postero Anterior). The aim of this study is to describe the management of radiation therapy in patients with cervical cancer bleeding in the radiotherapy installation of the NTB Provincial Regional Hospital and its advantages and disadvantages. Method: This type of research is qualitative descriptive research with a case study approach. The author conducted interviews with research subjects, namely 1 radiation oncologist, 1 medical physicist and 3 radiographers/RTT. The author took the collected data such as images and medical record data. Data was collected using interview transcripts, then processed using a categorization table and an open coding system. Results: Based on the results of the author's observations and interviews, the management of radiation therapy in Cito bleeding cervical cancer patients at the Radiotherapy Installation of the NTB Provincial Regional Hospital uses a 2D technique with a dose of 3 x 3 Gy per fraction. The advantage of radiation therapy management for patients with bleeding cervical cancer is the use of a 2D technique which is simpler and faster so that the patient can be immediately irradiated, but the disadvantage is that it produces less than optimal dose distribution to the target and organs at risk (OAR). Conclusion: Treatment of radiation therapy in patients with bleeding cervical cancer at the NTB Provincial Hospital Radiotherapy Installation uses a 2D two-field AP and PA technique with a dose of 3 x 3 Gy per fraction to stop bleeding. The advantage of using the 2D technique is that it is faster and simpler, while the disadvantage is that the dose distribution is not optimal.

Literature studies can examine the effect of gamma radiation on physiological aspects of soybean plants. Gamma radiation is known to impact genetic diversity, growth, morphology, seed size, weight and protein content of soybean plants. The aim of this literature study is to examine the effects of providing gamma rays on the physiology of soybean plants (Glycine max (L) Merrill). The method used is literature or literature study where the author uses several pieces of literature as references in the journal he created. Some studies show that gamma radiation can cause a decrease in the ability of soybean plants to survive and can cause slower growth. However, other research also shows that gamma radiation can be used to induce genetic mutations that have an impact on the physiology of soybean plants. The discussion topics taken range from the process of gamma radiation inducing genetic mutations in soybean plants, analysis of mutations that occur in soybean growth, the effect of gamma ray radiation on plant growth, and the effect of gamma radiation mutations on physiological parameters: photosynthesis of soybean plants.  

One of the cancers that causes the highest mortality is nasopharyngeal cancer. The number of nasopharyngeal cancer cases in Indonesia reached 19,943 new cases with a mortality rate of 13,399. Radiotherapy is the main treatment modality and part of standard care for cancer patients. The way radiotherapy works is to damage the DNA chain of tumor cells in order to kill tumor cells directly and eliminate the ability to proliferate. Giving radiation to the head and neck region has an influence on weight loss. The purpose of this study was to describe the BMI (Body Mass Index) of nasopharyngeal cancer patients who underwent IMRT therapy at the Radiotherapy Unit of Prof. Dr. I.G.N.G Ngoerah Hospital. The type of research used is quantitative research with an observational approach using retrospective data. The samples of this study were 25 patients with nasopharyngeal cancer who underwent IMRT therapy from January to December 2021 at the Radiotherapy Unit of Prof. Dr. I.G.N.G Ngoerah Hospital. The results of this study showed 25 samples of nasopharyngeal cancer patients who underwent IMRT therapy experienced weight loss with an average of 13.01 and BMI with an average of 4.93. Based on the results of the Statistical Test which shows that the p value <0.05 which means there is a decrease in body weight in nasopharyngeal cancer patients undergoing IMRT therapy in the Radiotherapy Unit of Prof. Dr. I.G.N.G Ngoerah Hospital. Of the 25 samples of nasopharyngeal cancer patients who underwent IMRT therapy, there were changes in BMI (Body Mass Index) before irradiation and after irradiation. This is evident from the normality test value and Paired Twhich shows a p value <0.05, meaning that there is a decrease in body weight in nasopharyngeal cancer patients undergoing IMRT therapy.  

Breast cancer is a type of cancer that often occurs in women, in the treatment of breast cancer is radiotherapy and fixation tools used, namely breast boards and thermoplastic masks which are aids for patients not to move during radiation therapy. The purpose of the study was to determine the procedure and reasons for using thermoplastic mask fixation devices in radiation therapy cases of breast cancer. This research is qualitative with a case study approach, the research time is from June 7 to July 15, 2023 and the research location at the Radiotherapy Installation of Dr. Hasan Sadikin Hospital Bandung. The subjects of the study were Radiation Oncology Doctors, Medical Physicists, Radiotherapists and Patients. By collecting data, making interview transcripts and reducing data and processed with open coding, given in the form of quotations and then drawing conclusions.The results showed that the procedure for using a thermoplastic mask fixation device was inserted into a waterbath with a temperature of 65.50C until the thermoplastic mask became flexible, the reason for using fixation was a shift in smaller objects at the time of irradiation, and better aesthetic value, because concentration marks and field boundaries did not need to be drawn directly on the patient's body but were drawn on the thermoplastic mask. Using a mask does not need to be marked on the patient's chest so that by using a thermoplastic mask the shift towards the target object is smaller during irradiation.

Radiation protection is a branch of science and engineering that discusses environmental health which is related to providing protection to a person or group of people from the possible negative consequences of ionizing radiation. This research aims to determine the implementation of radiation protection in the Radiology Installation at Dadi Hospital, South Sulawesi Province. This study uses research methods, namely conducting observations and interviews at the hospital. Based on the research results, it was concluded that the implementation of radiation protection in the Radiology Installation room at Dadi Hospital, South Sulawesi province was not in accordance with Bapeten's operational standards so its implementation was not optimal.