scholarly journals Uji Efektifitas Dinding Ruangan Panoramik Instalasi Radiologi RSUD Prof. Dr. MA Hanafiah SM Batusangkar Menggunakan TLD-100

2020 ◽  
Vol 2 (2) ◽  
pp. 95
Author(s):  
Dila Nelvo Dasril ◽  
Nerifa Dewilza
Keyword(s):  
Radiation Dose ◽  
General Public ◽  
Quantitative Research ◽  
Measuring Instrument ◽  
Dose Limit ◽  
Safety Level ◽  
Limit Values ◽  
Safety Standards ◽  
Direct Measurements

Research on the effectiveness of panoramic room walls has been carried out in the Radiology Installation of Prof. Dr. MA Hanafiah SM Batusangkar. This study aims to determine the effectiveness of the panoramic room walls in absorbing radiation emitted by panoramic aircraft, as well as knowing the safety level of the room around the panoramic inspection room in accordance with the dose limit values of workers and the general public. This type of research is a quantitative research by taking direct measurements. The research was conducted by measuring the radiation dose at six points of the panoramic room wall using a radiation measuring instrument, namely TLD-100. The results showed that the effectiveness of the walls was only able to absorb radiation less than 90%, with the shield category on the walls that was not good enough to withstand radiation. Therefore, it is necessary to renovate the panoramic room walls in accordance with safety standards.

scholarly journals Pengukuran Dosis Eksternal Yang Diterima Oleh Mahasiswa Praktikum Teknik Radiografi di Laboratorium Radiologi Universitas Baiturrahmah Padang

2020 ◽  
Vol 8 (1) ◽  
pp. 35-42
Author(s):  
Dila Nelvo Dasril ◽  
◽  
Oktavia Puspita Sari ◽  
Keyword(s):  
Radiation Dose ◽  
Ionizing Radiation ◽  
Control Panel ◽  
X Rays ◽  
External Radiation ◽  
Dose Limit ◽  
Limit Values ◽  
Practicum Students ◽  
External Radiation Dose ◽  
Radiation Workers

The utilization of ionizing radiation in the form of X-rays in addition to providing benefits to the medical world also has the potential to have a detrimental effect on workers, patients and, society. Radiation protection is a very important aspect of controlling this adverse effect. Every utilization of ionizing radiation must have endeavored so that the reception of radiation doses by radiation workers is always as low as possible so that the prescribed dose limit (NBD) value is not exceeded. NBD for apprentices and students who are as low as 18 years old, who are carrying out training or practical work, or who because of their educational needs are forced to use a source of ionizing radiation, the same as the NBD that applies to radiation workers. Dose limit values for radiation workers must not exceed 20 mSv (twenty millisieverts) per year on average for five consecutive years. Determination of the external radiation dose received by practicum students at the Baiturrahmah University Radiology Laboratory aims to calculate how much the external radiation dose received by students during carrying out one course. Based on the results of the study found that the measurement of external radiation dose received by the student is 0 or there is no scattering radiation received by students, this is because at the time of exposure they are in the correct position that is behind the control panel wall that has been coated with Lead (Pb).

scholarly journals Radiation Awareness for Endovascular Abdominal Aortic Aneurysm Repair in the Hybrid Operating Room: An Instant Operator Risk Chart for Daily Practice

2021 ◽  
pp. 152660282110074
Author(s):  
Quirina M. B. de Ruiter ◽  
Frans L. Moll ◽  
Constantijn E. V. B. Hazenberg ◽  
Joost A. van Herwaarden
Keyword(s):  
Radiation Dose ◽  
Dose Rate ◽  
Effect Size ◽  
Radiation Risk ◽  
Dose Limit ◽  
Access Site ◽  
Femoral Access ◽  
Dose Rates ◽  
Rate Prediction ◽  
Operator Dose

Introduction: While the operator radiation dose rates are correlated to patient radiation dose rates, discrepancies may exist in the effect size of each individual radiation dose predictors. An operator dose rate prediction model was developed, compared with the patient dose rate prediction model, and converted to an instant operator risk chart. Materials and Methods: The radiation dose rates (DRoperator for the operator and DRpatient for the patient) from 12,865 abdomen X-ray acquisitions were selected from 50 unique patients undergoing standard or complex endovascular aortic repair (EVAR) in the hybrid operating room with a fixed C-arm. The radiation dose rates were analyzed using a log-linear multivariable mixed model (with the patient as the random effect) and incorporated varying (patient and C-arm) radiation dose predictors combined with the vascular access site. The operator dose rate models were used to predict the expected radiation exposure duration until an operator may be at risk to reach the 20 mSv year dose limit. The dose rate prediction models were translated into an instant operator radiation risk chart. Results: In the multivariate patient and operator fluoroscopy dose rate models, lower DRoperator than DRpatient effect size was found for radiation protocol (2.06 for patient vs 1.4 for operator changing from low to medium protocol) and C-arm angulation. Comparable effect sizes for both DRoperator and DRpatient were found for body mass index (1.25 for patient and 1.27 for the operator) and irradiated field. A higher effect size for the DRoperator than DRpatient was found for C-arm rotation (1.24 for the patient vs 1.69 for the operator) and exchanging from femoral access site to brachial access (1.05 for patient vs 2.5 for the operator). Operators may reach their yearly 20 mSv year dose limit after 941 minutes from the femoral access vs 358 minutes of digital subtraction angiography radiation from the brachial access. Conclusion: The operator dose rates were correlated to patient dose rate; however, C-arm angulation and changing from femoral to brachial vascular access site may disproportionally increase the operator radiation risk compared with the patient radiation risk. An instant risk chart may improve operator dose awareness during EVAR.

scholarly journals Peran Pengasuhan Otoritatif Terhadap Patriotisme Remaja: Dengan Mediator Kepuasan Hidup Dan Nasionalisme

2018 ◽  
Vol 24 (3) ◽  
pp. 326
Author(s):  
Agoes Dariyo
Keyword(s):  
Life Satisfaction ◽  
Significant Role ◽  
Quantitative Research ◽  
Statistical Tests ◽  
Authoritative Parenting ◽  
Measuring Instrument ◽  
Non Linear ◽  
Parenting Role ◽  
Role Of Parents

ABSTRACTThis study  aimed to found out the authoritative parenting role of parents to developed  adolescent nationalism and patriotism in the framework of national resilience. Quantitative research by taking data using a Likert scale measuring instrument in the form of questionnaires, namely authoritative parenting, life-satisfaction, nationalism and patriotism. The subjects involved in this study amounted to 186 adolescents (male = 99 and female = 87 female, with an average age of 18.1 years). Furthermore, the collected data were analyzed using statistical tests, namely logarithmic non-linear regression. The results showed that (a) parents' authoritative parenting played a significant role in developing adolescent nationalism and patriotism in the framework of achieving national resilience, (b) authoritative parenting parents played a significant role in achieving teen life satisfaction so that they also developed nationalism and patriotism in the framework of national resilience, (c) youth realized that the state hadfacilitated its citizens to had jobs so that parents were able to meet the needs of life for teenagers. Thus, they as teenagers were aware of being citizens who had nationalism and patriotism in their lives. ABSTRAKPenelitian ini bertujuan mengetahui peran pengasuhan otoritatif  orangtua untuk menumbuhkembangkan sikap nasionalismedan patriotisme remaja  dalam kerangka ketahanan nasional.Penelitian bersifat kuantitatif dengan pengambilan data menggunakan alat ukur skala Likert berupa kuesioner yaitu pola asuh otoritatif, kepuasan hidup, nasionalisme dan patriotisme. Subjek yang terlibat dalam penelitian ini berjumlah 186 remaja (laki-laki = 99 orang dan perempuan = 87 perempuan, dengan rerata usia 18,1 tahun). Selanjutnya, data yang terkumpul dianalisis dengan menggunakan uji statistik yaitu regresi non-linear logaritmik.Hasil penelitian menunjukkan bahwa (a) pola asuh otoritatif orangtuaberperan secara signifikan dalam menumbuh-kembangkan sikap nasionalisme dan patriotismeremaja dalam kerangka mencapai ketahanan nasional, (b) pola asuh otoritatif orangtua berperan secara signifikan dalam mencapai kepuasan hidup remaja sehingga mereka pun akan menumbuhkembangkan sikap nasionalismedan patriotisme dalam kerangka ketahanan nasional, (c) remaja menyadari bahwa negara telah memfasilitasi warganya untuk memiliki pekerjaan sehingga orangtua  mampu memenuhi kebutuhan hidup bagi anak remaja. Dengan demikian,  mereka sebagai remaja sadar untuk menjadi warga-negara yang memiliki sikap nasionalisme dan patriotisme dalam hidupnya.

scholarly journals EVALUATION OF RADIATION DOSE RATE OF RSG-GAS REACTOR

2018 ◽  
Vol 24 (3) ◽  
Author(s):  
Amir Hamzah ◽  
Hery Adrial ◽  
Subiharto Subiharto
Keyword(s):  
Radiation Dose ◽  
Radiation Exposure ◽  
Dose Rate ◽  
Nuclear Reactor ◽  
Area Measurement ◽  
Radiation Dose Rate ◽  
Safety Level ◽  
Modeling And Analysis ◽  
Dose Rates ◽  
Limit Value

EVALUATION OF RADIATION DOSE RATE OF RSG-GAS REACTOR. The RSG-GAS reactor has been operated for 30 years. Since the nuclear reactor has been operated for a long time, aging process on its components may occur. One important parameter for maintaining the safety level of the RSG-GAS reactor is to maintain radiation exposure as low as possible, especially in the working area. The evaluation results should be able to demonstrate that the radiation exposure of the RSG-GAS is still safe for workers, communities and the surrounding environments. The purpose of this study is to evaluate radiation exposure in the working area to ensure that the operation of RSG-GAS is still safe for the next 10 years. The scope of this work is confirming the calculation results with the measured radiation dose in the RSG-GAS reactor working area. Measurement of radiation exposure is done by using the installed equipments at some points in the RSG-GAS working area and a portable radiation exposure measurement equipment. The calculations include performance of a modeling and analysis of dose rate distribution based on the composition and geometry data of RSG-GAS by using MCNP.  The analysis results show that the maximum dose rate at Level 0 m working area of RSG-GAS reactor is 3.0 mSv/h with a deviation of 6%, which is relatively close to the measurement value. The evaluation results show that the dose rate in RSG-GAS working area is below the limit value established by the Nuclear Energy Regulatory Agency of Indonesia (BAPETEN) of 10 mSv/h (for the average effective dose of 20 mSv/year). Therefore, it is concluded that the dose rate in RSG-GAS working area is safe for personnel..Kata kunci: dose rates, RSG-GAS, radiation safety, MCNP.

scholarly journals MODEL KEPEMIMPINAN TEPAT DALAM MEMPENGARUHI KINERJA DOSEN PERGURUAN TINGGI DI INDONESIA

2021 ◽  
Vol 6 (1) ◽  
pp. 35
Author(s):  
Tedy Ardiansyah ◽  
Dipa Teruna Awaloedin
Keyword(s):  
General Public ◽  
Research Method ◽  
Quantitative Research ◽  
Strong Influence ◽  
Secondary Data ◽  
Qualitative Approach ◽  
New Model ◽  
Foreign Countries ◽  
New Literature ◽  
Average Sample

<p><em>The purpose of this study is to determine the appropriate form of leadership from various types of leadership on lecturer performance including the correlation results whether the results are significant or insignificant so as to help provide a new literature from current limitations. The research method uses a descriptive qualitative approach, the data used is in the form of secondary data which are all taken from Scopus indexed journals from 2020 to 2017, all journals are in the form of quantitative research and with an average sample of 217 respondents. The conclusion that can be drawn broadly is that existing research creates a new model that not all research related to leadership has a strong influence on lecturer performance, what is unique is that these differences are in the State of Indonesia not in foreign countries, namely Russia, and the type of leadership is only leadership general public that has no relationship with the performance of the lecturers other than that which has a very strong relationshi</em><em>p.</em></p>

scholarly journals Learning from Mistakes in the Media to Improve the Communication of Wood Bioenergy Research

BioResources ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 1-3
Author(s):  
Brooks Mendell
Keyword(s):  
General Public ◽  
Quantitative Research ◽  
Applied Research ◽  
Communication Strategies ◽  
Effective Communication ◽  
Decision Makers ◽  
Causal Relationships ◽  
Total Absence ◽  
The Media ◽  
Media Reports

Successful applied research into wood bioenergy requires communication of meaningful insights to inform decision-makers and the general public. Effective communication strategies make such insights accessible. However, recent media reports often exhibit a near total absence of findings from peer-reviewed or quantitative research, highlighting a failure to communicate between applied researchers and reporters. As a result, the general public’s understanding of wood-based bioenergy remains incomplete. At a minimum, researchers can address three common lapses when communicating results of their research related to wood-based energy to increase the public’s access to technical results. First, provide context to give policymakers a sense, on a relative basis, of the importance of a given issue. Second, properly distinguish between “causal” relationships and mere happenstance or correlations. And finally, confirm facts and conclusions. Faulty assertions can cast doubts on the broader work and body of research.

scholarly journals GAMOS DICOM Simulation on Occupational EL Dose due to 99mTc and 131I Exposures in Nuclear Medicine Departments

2019 ◽  
Vol 30 (1) ◽  
pp. 65-78
Author(s):  
Abdulmalek Rajkhan Abdulmalek Rajkhan
Keyword(s):  
Nuclear Medicine ◽  
Radiation Dose ◽  
Atomic Bomb ◽  
Epidemiological Studies ◽  
Radioactive Material ◽  
Radiation Hazard ◽  
Dose Limit ◽  
Dicom Image ◽  
Annual Dose ◽  
Atomic Bomb Survivors

Radiation induced cataracts is a disease that is common amongst radiation exposed staff. About 30 percent of retired occupational radiation workers developed eye lens (EL) cataracts. Epidemiological studies on radiation therapy patients, occupational workers, and atomic bomb survivors show that 0.5 Gy of acute or fractioned radiation dose to EL causes one or both lens to cloud. The annual EL dose limit drawn by the International Commission for Radiation Protection (ICRP) was 150 mSv and was changed in 2012 to 20 mSv averaged over 5 years, with no single year exceeding 50 mSv. The limited number of researche done in Nuclear Medicine (NM) clinics with the Hp(3) dosimeters suggest that the annual EL dose from three procedures is measured to be between 4.5 and 9 mSv (i.e. dispensing, preparing and administering). These procedures are performed when the radioactive materials are in closed shielded containers or behind a barrier. Common radioactive material handled by occupational workers in NM clinics are 99mTc and 131I. They pose less radiation hazard to workers EL in the three procedures when they are behind shielded containers. Moreover, once the radioactive material is administered into patients, they become open sources and pose more radiation hazard to workers. The Hp(3) dosimeter is a new uncommon dosimeter. Many radiation facilities use the Hp(0.07) and Hp(10) dosimeters coupled with many conditions and conversion factors to find approximate results. Therefore, simulations are performed to find the EL dose. However, some simulations are performed with little flexibility in simulation geometry, others utilize low-quality phantoms or present the simulation results in terms of fluxes or energy ranges. In the present study, the NM worker EL dose is simulated by utilizing a high-resolution Digital Imagning Communication in Medicine (DICOM) image in GEANT4 Archeticture for Medical Oriented Simulation (GAMOS). A water cylinder homogenously filled by radioactive material, representing the administered patient, was created in the simulation. The worker exposure scenario was simulated by placing the cylinder in three different directions and five different distances with respect to the DICOM image. The results of the simulation reveal that the highest occupational EL radiation dose is received from the anterior-posterior direction, followed by the lateral, and the posterior-anterior directions. The results of the conservative simulated scenario reveal that the worker EL dose is exposed to three tenths of the annual dose limit after 110 131I patients, or 300 99mTc patients.

scholarly journals Analisis Perubahan kV dan mAs terhadap Kualitas Gambar dan Dosis Radiasi pada Pemeriksaan Multislice Computed Tomography Abdomen dalam Kasus Tumor Abdomen di Instalasi Radiologi RSUD dr. Saiful Anwar Malang

2016 ◽  
Vol 2 (1) ◽  
pp. 129-133
Author(s):  
Ardi Soesilo Wibowo ◽  
Gatot Murti Wibowo ◽  
Anang Prabowo
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Ct Scan ◽  
Quantitative Research ◽  
Scoring Method ◽  
Tube Voltage ◽  
Abdominal Tumor ◽  
Abdomen Ct ◽  
Voltage Variation

Backgroud: Examination of the abdomen CT scan is often done by using standard protocol, meanwhile the actual parameter can be modified according to local needs considering image quality and radiation dose based on Karabulut and Ariyuek (2016). Abdomen CT Scan by GE 16 slices unit in Radiology Instaallation of Dr. Saiful Anwar Malang Hospital, using exposure factor of 120 kV, 234 mAs and the value of the CTDI dose was 53.04 mGy. While the BAPETEN’s reference of CTDI value, a CT scan of abdomen was 25 mGy.  This study aims to determine the changes of the value of kV and mAs to the image quality and the radiaton dose in the abdomen MSCT examination on abdominal tumor case in Radiology Installation of Dr. Saiful Anwar Malang Hospital.Methods: This research was a quantitative research with an experimental approach. The data were collected from three variations of tube voltage (kV) ie 100 kV, 120 kV and 140 kV and three variations of tube current value and time (mAs) ie, 180 mAs, 195 mAs, and 210 mAs. Radiographs was evaluated by three radiology physicians. Data were analyzed by scoring method of respondent’s assessment to assess MSCT image quality of abdominal tumor, while the radiation dose was obtained by CTDI recording.Results: The results showed that there was influence of tube voltage variation to image quality of abdominal tumor using MSCT unit. The higher kV used, the higher image quality resulted. From the calculation of the percentage from the assessment, the highest score of variation was at 140 kV, while the lowest score of variation was at 100 kV. Based on the recording CTDI radiation dose on the monitor, found that the higher value of kV, the higher radiation resulted. The mAs variations influenced the image quality of abdominal tumor using MSCT unit. Acoording to the percentage of the assessment, the highest score of variation found in 210 mAs, and the lowest score of variation found in 180 mAs. Based on the recording of radiation dose on the monitor, the higher mAs value, the higher radiation dose using MSCT unit. It was recommended to use 195 kV and 120 mAs for MSCT examination of abdominal tumor in Radiology Installation of Dr. Saiful Anwar Malang Hospital.Conclusion: There was influence of kV and mAs variation to anatomical image clarity and radiation dose of abdomen MSCT examination

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