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Heru Prasetio
PTKMR-BATAN, Jakarta
Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health

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PERBANDINGAN DOSIS RADIASI DI PERMUKAAN KULIT PADA PASIEN THORAX TERHADAP DOSIS RADIASI DI UDARA DENGAN SUMBER RADIASI PESAWAT SINAR-X Milvita, Dian; Leona Gemi, Nola; Prasetio, Heru; Dwi Kusumawati, Dyah; Yuliati, Helfi; Suyati, Suyati
Jurnal Spektra Vol 15, No 2 (2014): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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Abstract

Penelitian ini bertujuan untuk membandingkan hasil pengukuran dosis radiasi permukaan kulit yang diterima pasien thorax terhadap dosis radiasi di udara dari penyinaran pesawat sinar-X.Penelitian ini menggunakan TLD-100 sebagai alat ukur radiasi. Pengambilan data dilakukan di salah satu rumah sakit di Kota Padang dengan cara mengumpulkan 18 orang data pasien yang menjalani pemeriksaan thorax untuk pengukuran dosis radiasi di permukaan kulit dan styrofoam untuk pengukuran dosis radiasi di udara dengan menvariasikan tegangan mulai dari 40 kV sampai 70 kV, Hasil penelitian untuk pengukuran dosis radiasi di permukaan kulit (Entrance Surface Dose / ESD), minimum adalah 0,268 mGy dan maksimum adalah 0,736 mGy dengan ESD rata-rata adalah 0,497 mGy. Selanjutnya, untuk pengukuran dosis radiasi di udara untuk kondisi thorax, nilai minimum adalah sebesar 0,333 mGy dan nilai maksimum adalah sebesar 0,532 mGy dengan rata-rata 0,455 mGy.Dari perbandingan kedua dosis radasi ini, didapatkan nilai backscatter factor yang bervariasi, tetapi nilai ini tidak berbeda jauh dengan data TRS (Technical Reports Series) IAEA No. 457. Kata kunci :Backscatter factor, dosis radiasi di permukaan kulit, dosis radiasi di udara, Entrance Surface Dose.
Perbandingan Verifikasi Akurasi Posisi Pasien Radioterapi Secara Manual dan Semiotomatis Berbasis Citra DRR/EPID NOFRIDIANITA, SUSI; PRASETIO, HERU; PAWIRO, SUPRIYANTO A
Indonesian Journal of Cancer Vol 10, No 3 (2016): July - September 2016
Publisher : Indonesian Journal of Cancer

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Abstract

ABSTRACTRadiotherapy is one of common treatment modality for Nasopharyngeal Cancer. The development of intensity modulated radiotherapy (IMRT technique) gives satisfactory results in the nasopharyngeal cancer treatment, both clinically and dosimetry. IMRT can reduce the effects of acute and chronic, with a maximum dose coverage to the tumor and minimal dose to the organ or normal tissue surrounding target value. The purpose of this study is to compare theaccuracy of patient positioning verification of Nasopharyngeal Cancer IMRT with DRR / EPID image registration. Retrospective data analysis of the AP and Lateral projections DRR and EPID images 35 patients (140 images) were then manually verified by simulative applied fusion semiautomatic with FIJI program. FIJI program improved the image quality of the DRR and EPID to facilitate the image registration. Results of this study shows no statistically significantdifference between the manual verification and semiautomatic fusion method of nasopharyngeal cancer patients, but there is a tendency that the semiautomatic method with FIJI program provides verification geometry radiotherapy better a result than manual methods.ABSTRAKTeknik Intensity Modulated Radiotherapy (IMRT) dapat mengurangi efek akut dan kronik, dengan cakupan dosis maksimal pada tumor dan dosis minimal pada organ/jaringan sehat di sekitarnya. Tujuan dari penelitian ini adalah untuk mengetahui perbandingan verifikasi akurasi posisi pasien IMRT Kanker Nasofaring dengan registrasi citra DRR/ EPID. Analisis data retrospektif terhadap citra DRR/EPID dari 35 pasien proyeksi AP dan Lateral (140 citra) yang telah diverifikasi secara manual kemudian secara simulatif diterapkan metode fusi semiotomatis dengan program FIJI. Penggunaan program FIJI dapat memperbaiki kualitas citra DRR/EPID sehingga memudahkan dalam verifikasi geometri radioterapi. Hasil penelitian ini secara statistik menunjukkan tidak terdapat perbedaan antara verifikasi manual denganmetode fusi pada radioterapi pasien kanker nasofaring, namun secara deskriptif terdapat kecenderungan bahwa metode fusi dengan program FIJI memberikan verifikasi geometri radioterapi yang lebih baik dibandingkan metode manual.
Kalibrasi TLD-100 di Udara Menggunakan Radiasi Sinar-X Pada Rentang Radiation Qualities in Radiodiagnostic (RQR) Yeni, Nisaul Chaira; Milvita, Dian; Prasetio, Heru
Jurnal Ilmu Fisika Vol 11, No 2 (2019): Published in September 2019
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (837.969 KB) | DOI: 10.25077/jif.11.2.81-87.2019

Abstract

Telah dilakukan kalibrasi TLD-100 di udara menggunakan radiasi sinar-X pada rentang Radiation Qualities in Radiodiagnostic (RQR). Kalibrasi dilakukan untuk mengetahui koefisien kalibrasi TLD di udara, faktor koreksi kualitas radiasi dan pengaruh variasi dosis radiasi terhadap koefisien kalibrasi. Penelitian menggunakan pesawat sinar-X konvensional sebagai sumber radiasi, detektor TLD-100 sebagai detektor yang akan dikalibrasi dan detektor unfors-X2 sebagai detektor standar. Dosis radiasi yang digunakan yaitu (0,2; 0,3; 0,5; 0,7) mGy dengan variasi tegangan (50, 60, 70, 80, 90, 100) kV. Hasil penelitian menunjukkan nilai koefisien kalibrasi TLD bergantung kepada kualitas radiasi sehingga TLD harus dikalibrasi pada setiap tegangan. Nilai faktor koreksi kualitas radiasi berada pada rentang 0,825 ± 0,097 sampai 1,039 ± 0,084 yang berarti kemampuan detektor merespon radiasi berbeda-beda seiring perubahan kualitas radiasi. Nilai koefisien kalibrasi meningkat seiring bertambahnya nilai dosis radiasi.Kata kunci: koefisien kalibrasi, faktor koreksi, TLD
Worker Health Monitoring Through Whole Body Counter Examination for Safety and Radiation Protection (2017-2018 Data) Surniyantoro, Harry Nugroho Eko; Sugiyana, Sugiyana; Prasetio, Heru; Ikram, Abarrul; Syaifudin, Mukh
KEMAS: Jurnal Kesehatan Masyarakat Vol 17, No 2 (2021): KEMAS (Article in Press)
Publisher : Department of Public Health, Faculty of Sport Science, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kemas.v17i2.25911

Abstract

Abstract. Radiation protection is an action or effort taken to reduce the effects of damaging radiation exposure. Therefore, it is necessary to routinely monitor the condition of workers, among others, with a whole-body counter (WBC) either for daily activities or in a radiation emergency. In this research 78 male and female workers with an average age of 44.51 years who have been worked for 1 up to more than 30 years at the Center for Technology of Radiation Safety and Metrology (PTKMR) - BATAN in 2018-2019 have been determined with standard procedures. The results showed that the average K-40 count for the year 2018 was 3767.35 ± 975.33 Bq. Among the 80 participants tested, internal radioisotopic contamination with Cs-137 was detected in one person, but the levels were marginal and just exceeded the detection limit (250 Bq/body). This average value was lower than that of the previous year (2017) i.e. 4274.74 ± 740.85 Bq for 43 respondents. There is no positive correlation between radioactivity with the bodyweight of respondents but correlated positively with body mass index. It was concluded that the radioactivities of the workers of PTKMR are still within a normal range.
Worker Health Monitoring Through Whole Body Counter Examination for Safety and Radiation Protection (2017-2019 Data) Sugiyana, Sugiyana; Prasetio, Heru; Ikram, Abarrul; Syaifudin, Mukh; Surniyantoro, Harry Nugroho Eko
KEMAS: Jurnal Kesehatan Masyarakat Vol 17, No 2 (2021)
Publisher : Department of Public Health, Faculty of Sport Science, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kemas.v17i2.25911

Abstract

Radiation protection is an action or effort taken to reduce the effects of damaging radiation exposure. Therefore, it is necessary to routinely monitor the condition of workers, among others, with a whole-body counter (WBC) either for daily activities or in a radiation emergency. In this research 78 male and female workers with an average age of 44.51 years old who have been worked for 1 up to more than 30 years at the Center for Technology of Radiation Safety and Metrology (PTKMR) - BATAN in 2018-2019 have been determined with standard procedures. The results showed that the average K-40 count for the year 2018 was 3767.35 ± 975.33 Bq. Among the 80 participants tested, internal radio-isotopic contamination with Cs-137 was detected in one person, but the levels were marginal and just exceeded the detection limit (250 Bq/body). This average value was lower than that of the previous year (2017) i.e. 4274.74 ± 740.85 Bq for 43 respondents. There is no positive correlation between radioactivity with the bodyweight of respondents but correlated positively with body mass index. It is concluded that the radio-activities of the workers of PTKMR are still within a normal range. 
Analisis kondisi sosio demografi, ekonomi, dan ekologi wilayah di kawasan eks transmigrasi perkebunan kelapa sawit Kecamatan Muara Papalik Kabupaten Tanjung Jabung Barat Prasetio, Heru; Suandi, Suandi; Junaidi, Junaidi
Jurnal Paradigma Ekonomika Vol. 17 No. 1 (2022): Jurnal Paradigma Ekonomika
Publisher : Program Studi Ekonomi Pembangunan Fakultas Ekonomi dan Bisnis Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jpe.v17i1.17381

Abstract

The unit of analysis in this study is at the household level. Sources of data come from primary data and secondary data. The data collection method is a survey method using a questionnaire. Samples of data were taken from as much as 10% of the total population in the research location. Data were analyzed descriptively. The research focused on ex-transmigration areas' socio-demographic, economic, and ecological conditions in oil palm plantation communities. Based on the study results, it can be seen that the socio-demographic needs of the ex-transmigration community in Muara Papalik District are feasible and sufficient. The economic condition of the ex-transmigration community in Muara Papalik District in general, the welfare level of ex-transmigrants in Muara Papalik District can be said to be high. Judging from the ecological conditions of the region, the ex-transmigration area in Muara Papalik District has the potential to be developed sustainably. Proper and sufficient demographic conditions support the environmental growth of the region. In addition, the economic situation of the ex-transmigration community also has a significant influence on the development of the Muara Papalik sub-district.
The Comparison of Surface Dose in Vivo Dosimetry Using 3D-CRT and IMRT Technique on Breast Cancer Case Wulandari, Sri; Ulya, Syarifatul; Diyona, Fiqi; Adrial, Rico; Prasetio, Heru
Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan Vol 18 No 1 (2024): Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan
Publisher : Fakultas Kedokteran UPN Veteran Jakarta Kerja Sama KNPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33533/jpm.v18i1.7771

Abstract

The aim of this study is to verify the adequacy of the surface radiation dose calculated by the Treatment Planning System (TPS) using 3DCRT and IMRT technique with the dose measured by the TLD-100, referring to the report of the American Association of Physicists in Medicine Task Group No.219 (AAPM-TG No.219). This research process began with annealing the TLD-100 at the Research Center for Safety Technology Metrology and Nuclear Quality of the National Innovation Research Agency (PRTKMMR-BRIN), followed by scanning the TLD-100 on the surface of the phantom plate using a CT simulator. In addition, the TLD-100 was calibrated with different radiation doses (0; 20; 50; 80; 100; 150; 200; 250; 370) cGy. Verification of the surface radiation dose was performed by calculating the TPS surface dose by Patient Specific Quality Assurance (PSQA) and comparing it with the dose measured by the TLD-100. The result is Radiation techniques such as IMRT are more conformal than 3D-CRT because they precisely control dose intensity, making the TLD dose in IMRT closer to TPS. Differences in detector types such as TLD also affect the results of radiation dose measurements. Continuous assessment of patient dose is important for the safety of radiation therapy.
Pengamatan Lamanya Penyinaran Matahari di BMKG Kelas II Kota Palembang Menggunakan Alat Campbell Stokes Atina, Atina; Prasetio, Heru
Jurnal Penelitian Fisika dan Terapannya (JUPITER) Vol. 3 No. 2 (2022): Jurnal Penelitian Fisika dan Terapannya (JUPITER)
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/jupiter.v3i2.7148

Abstract

Campbell Stokes Recorder adalah yang digunakan secara resmi oleh Badan Meteorologi, Klimatologi, dan Geofisika dalam kegiatan pengukuran lamanya penyinaran matahari. Penelitian ini bertujuan untuk mengetahui lamanya penyinaran matahari di kota Palembang periode Agustus 2021 dan memahami faktor apa saja yang mempengaruhi lamanya penyinaran matahari. Metode yang digunakan adalah pengukuran langsung di lapangan terhadap keadaan cuaca di Kota Palembang selama bulan Agustus tahun 2021 di stasiun kelas II BMKG Kota Palembang. Hasil penelitian diketahui bahwa Lamanya penyinaran matahari periode Agustus di kota Palembang, nilai tingkat penyinaran matahari terpanjang terjadi pada tanggal 12 Agustus 2021 yaitu 8,4 jam. Hal ini dikarenakan cuaca yang cerah dan matahari tidak tertutup awan. Pada tanggal  4, 7, 10, 17, 25 dan 26 cuaca mendung, sehingga hasil pengukuran yang didapatkan kecil dikarenakan tertutup awan. Sedangkan penyinaran matahari terpendek terjadi pada tanggal 22 dan 30 Agustus 2021 yaitu 0 jam  karena cuaca mendung dan tertutup awan sepanjang hari. Pengukuran ini dilakukan dimulai dari matahari terbit sampai matahari tenggelam. Faktor- faktor yang mempengaruhi lamanya penyinaran matahari yaitu waktu dan posisi tempat bumi terhadap matahari, durasi hari dan  sudut datang radiasi matahari, cuaca serta ketelitian pengamat dan alat pengukur.
Analysis of pediatric fixation equipment with audio-video for chest radiography examinations Apriantoro, Nursama Heru; Supriyono, Puji; Prasetio, Heru; Sinaga, Citra Elisabet
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.011

Abstract

Pediatric patients are generally uncooperative during radiology examinations. Radiographic images can become blurry due to movement. This will cause to repeat examinations, thereby significantly increasing radiation exposure, and it can pose significant risks to children, patient families, and radiation workers. The research aims to create and test the effectiveness of a fixation device equipped with Audio-Visual elements for pediatric chest radiography examinations in Anteroposterior and Lateral projections. The experimental method involves developing the fixation device in the Radiodiagnostic Department Laboratory of Poltekkes Kemenkes Jakarta II. The effectiveness of the fixation device is assessed through surveys and interviews involving 66 respondents at hospitals in Jakarta from January to July 2023 during pediatric chest examinations. The average results indicate that the device can be used in hospitals (3.27±0.63), it’s safe to use (3.00±0.74), and highly effective (3.17±0.67). The overall average value of 3.16±0.68, suggests that the fixation device is suitable for use in pediatric chest examinations. The obtained images from the Anteroposterior and Lateral projections optimally describe of lung organs, the heart, and blood vessels within the thoracic cavity. Suggestions for further development of the safe device include the addition of leg supports, pediatric chair can be moved forward/backward and patient restraints to prevent falling or movement
Pengaruh Filter Citra terhadap CT Number pada Pesawat CT Simulator Purwatiningsih, Purwatiningsih; Prasetio, Heru; Haerunnisa, Dyah Nuriska
Lontar Physics Today Vol 3, No 1 (2024): Februari 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v3i1.19322

Abstract

Abstrak. CT Simulator merupakan salah satu penunjang proses radioterapi dengan menentukan lokasi dan kepadatan jaringan organ pasien dalam koordinat tertentu yang disebut piksel. Setiap piksel memiliki satuan yang disebut CT number atau Hounsfield Unit (HU) yang menggambarkan besarnya redaman radiasi pada jaringan. CT number terkait dengan Relative Electron Density (RED) yang perlu diukur secara langsung untuk memverifikasi hasil perhitungan dosis di TPS. Penelitian ini bertujuan untuk mencari pengaruh filter citra terhadap CT number menggunakan parameter pemindaian 120 kV, 200 mAs, slice thickness 1 mm dan variasi filter Smooth, Sharp, dan Standard pada Phantom CIRS 062M Electron Density dengan metode akuisisi Helical dan Axial scanning. Hasil penelitian filter Smooth, filter Sharp dan filter Standard pada setiap metode akuisisi citra Helical dan Axial Scanning tidak berpengaruh secara signifikan terhadap nilai CT number yang didapatkan. Hal ini dapat diketahui dari semua hasil uji statistik yang memperoleh nilai signifikansi p 0,05 (tidak ada perbedaan).Kata kunci: Radioterapi, CT number, Filter Citra, Helical Scanning, Axial Scanning, Relative Electron DensityAbstract. CT Simulator is one of the supports for the radiotherapy process by determining the location and density of the patient's organ tissue in certain coordinates called pixels. Each pixel has a unit called a CT number or Hounsfield Unit (HU) which describes the amount of radiation attenuation in the patient's organs. The CT number is related to the Relative Electron Density (RED) which needs to be measured directly to verify the dose calculation results at the TPS. This study aims to find the effect of image filters on CT number values using scanning parameters of 120 kV, 200 mAs, slice thickness 1 mm and the use of Smooth filter, Sharp filter, and Standard filter on the Phantom CIRS 062M Electron Density scanning process with Helical and Axial scanning acquisition methods. The results of the study with variations of Smooth filters, Sharp filters and Standard filters on each method of Helical and Axial Scanning image acquisition did not significantly affect the CT number obtained. It can be seen from all statistical test results that obtained a significance value of p 0.05 (no difference).Keywords: Radiotherapy, CT number, Image Filter, Helical Scanning, Axial Scanning, Relative Electron Density
Co-Authors Abarrul Ikram Abrar, Luthfia Aqila Adrial, Rico Almuslimiati, Almuslimiati Atina, Atina Dewi, Rahmawati Dian Fitriyani Dian Milvita Dinda Dyesti Aprilyanti Dyah Dwi Kusumawati, Dyah Fiqi Diyona, Fiqi Haerunnisa, Dyah Nuriska Helfi Yuliati Helga Silvia Ivone Chirsnia Junaidi Junaidi Kanie, Muhammad Al Jabbar Mahmudi Rio Putra, Mahmudi Rio Mukh Syaifudin Mursiyatun Mursiyatun Mustofa, Yahya NOFRIDIANITA, SUSI Nola Leona Gemi, Nola NURSAMA HERU APRIANTORO Pardi Pardi, Pardi PAWIRO, SUPRIYANTO A Primadila, Ervy Purwatiningsih Purwatiningsih Raden Mohamad Herdian Bhakti Rahayu, Irma Dwi Ramadhani, Santri Sari, Merly Dwipurnama Sinaga, Citra Elisabet Sri Wulandari Sugiyana Sugiyana, Sugiyana Supriyono, Puji Surniyantoro, Harry Nugroho Eko Suwarni - Suyati - Syahda, Aprizka Smartalova Ulya, Syarifatul Yeni, Nisaul Chaira