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All Journal Buletin Udayana Mengabdi Jurnal Penelitian Pendidikan IPA (JPPIPA) Syntax Literate: Jurnal Ilmiah Indonesia JUTIK : Jurnal Teknologi Informasi dan Komputer Indonesian Physical Review Kappa Journal
Ni Nyoman, Ratini
Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Other

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Penentuan Nilai Computed Tomography Dose Index (CTDIvol) dan Dose Length Product (DLP) Pesawat CT-Scan kepala pada kasus Stroke Non Hemoragik (SNH): Determination of Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP) values of head CT-Scan aircraft in cases of Non Hemorrhagic Stroke (SNH) Nabilla Fatimah; Sutapa, Gusti Ngurah; Sudarsana, Wayan Balik; Ratini, Ni Nyoman; Suardana, Putu; Putra, I Ketut
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25599

Abstract

A study was conducted on the determination of Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP) values of head CT-Scan aircraft in cases of Non Hemorrhagic Stroke (SNH). The study was conducted at the Radiology Installation of Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital using secondary data from head CT-Scan examination results consisting of age, gender, kV, mAs, slice thickness, rotation time, CTDIvol and DLP in patients aged 40-80 years. This study aims to determine the local DRL value at Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital does not exceed the national DRL value. It was found that in female patients the CTDIvol value in male patients was 54.9 mGy and in female patients it was 53.11 mGy. While the DLP value of male patients was 1143 mGy.cm and in female patients it was 1118 mGy.cm. Based on the results of the analysis with a one-way t-test, it can be seen that the DRL values of CTDIvol and DLP in both male and female patients do not exceed the standards set by BAPETEN No.1211/K/V/2021, so it can be said that the CT-Scan at the Radiology Installation of Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital is still suitable for use in examinations, especially head examinations.
Analisis Laju Dosis Radiasi Neutron Pada Pekerja Radiasi Menggunakan Surveymeter di Instalasi Radioterapi Ida Bagus Putu Priastana Bawa; Ni Nyoman Ratini; Wayan Balik Sudarsana; Gusti Ngurah Sutapa; I Made Satriya Wibawa; I Gde Antha Kasmawan; Rozi Irhas
Kappa Journal Vol 8 No 3 (2024): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.27296

Abstract

The research was carried out at the Radiotherapy Installation at Hospital Prof. Dr. I.G.N.G. Work with the aim of knowing the value of the neutron radiation dose rate at the maximum point after the irradiation is carried out and knowing the value of the neutron radiation dose rate to radiation workers based on the Dose Limit Value permitted by BAPETEN. The research was carried out by measuring the neutron radiation dose rate using a neutron surveymeter at 7 different points with a photon beam of 10 MV energy. At point A, the average value of the neutron radiation dose rate at the maximum point was 6618.87 ± 959.50 µSv/h, at point B it was 1586.99 ± 113.95 µSv/h, at point C it was 1599.90 ± 210.98 µSv/h, at point D it is 1236.83±113.94 µSv/h, at point E it is 297.48±41.79 µSv/h, at point F it is 23.69±3.14 µSv/h h and at point G of 0.54 ± 0.44 µSv/h. Then the value of the equivalent dose rate of neutron radiation at each point is obtained, namely, at point A it is 1.8 µSv/h, at point B 3.2 µSv/h, at point C 3.5 µSv/h, at point D 2 .3 µSv/h, at point E 2.3 µSv/h, at point F 2 µSv/h and at point G 1.9 µSv/h, then the equivalent dose rate value is compared with 1/2 NBD of radiation workers of 5 µSv /h, then the equivalent dose rate value is still below 1/2 of the NBD of radiation workers and the SPO that applies at the Radiotherapy Installation at Hospital Prof. Dr. I.G.N.G. Ngoerah is indeed safe for radiation workers.
Menentukan Potensi Resiko Kanker pada Pemeriksaan CT Scan Toraks dengan Metode SSED Sutapa, Gusti Ngurah; Ni Putu Aprillia Artanti Phalosa; I Wayan Balik Sudarsana; Ni Nyoman Ratini; I Made Yuliara; I Wayan Supardi
Kappa Journal Vol 8 No 3 (2024): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.27804

Abstract

This study aims to determine the potential risk of thoracic organ cancer in CT Scan examinations using the Size-Specific Effective Dose (SSED) method, considering the importance of accurate radiation dose measurement to minimize the risk of cancer due to radiation exposure. The analysis was conducted on 30 female patients and 30 male patients in the adult category (17 - 45 years) at the Radiology Installation of Prof. Dr. I G. N. G. Ngoerah Hospital, Denpasar, using a descriptive quantitative approach with secondary data. The results showed that the Size-Specific Dose Estimate (SSDE) and SSED values ​​in female patients were 6.51 ± 0.70 mGy and 2.95 ± 0.48 mSv, respectively, while in male patients they were 6.38 ± 0.49 mGy and 2.27 ± 0.26 mSv. The risk of cancer in female patients is estimated at 0.016% and in male patients it is 0.012%. The Anova test showed a significant difference between the dose values ​​of the SSDE and SSED methods, which was caused by SSED only considering the dose of organs covered in the CT Scan image. However, the t-test showed that the doses from both methods did not exceed the BAPETEN standard No. 8 of 2011, so that the thoracic CT Scan examination in this Installation is safe and feasible to use.  
Measurement of Natural and Artificial Radiation as Well as Radiation Applications in The Field of Medical Physics at SMA Negeri II Kuta Badung Bali Sutapa, Gusti Ngurah; I Gde Antha Kasmawan; Ida Bagus Made Suryatika; I Made Yuliara; Ni Nyoman Ratini; I Gusti Agung Ayu Ratnawati; Ni Luh Putu Trisnawati; I Ketut Putra; Ni Kadek Nova Anggarani
Kappa Journal Vol 8 No 3 (2024): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.28254

Abstract

The results of research that have been carried out, especially in the field of medical physics such as X-rays, have been widely utilized in the medical field, especially Radiology Units in Several General and Regional Hospitals. Thus, it is very important to be understood and known by the community, especially the community, in this case the students of SMA Negeri 2 Kuta. In 2022/2023, there are 507 male and 597 female students. Seeing these conditions, surveys and observations were carried out as a result, students had difficulty understanding physics because the physics subject matter was dense, memorized and mathematical. Seeing these results, it is necessary to carry out a new paradigm in physics learning. One of the more appropriate methods is to balance theory learning with field applications such as natural and artificial radiation measurements and applications in the field of medical physics. The results of natural radiation measurements in the classroom and outside the classroom were 0.605 ± 0.0024 and 0.182 ± 0.0008 mSv/year, respectively. The limit of the dosage rate allowed by BAPETEN is 1,000 mSv/year. Natural radiation identified in the classroom and outside the classroom is still declared safe
Pengaruh Focus Film Distance (FFD) terhadap Nilai Uji Kolimasi pada Kolimator Pesawat Sinar-X Stasioner untuk Pemeriksaan Pasien Marcellino, Nathaniel; Ratini, Ni Nyoman; Balik Sudarsana, I Wayan; Sutapa, Gusti Ngurah; Paramarta, I. B. Alit; Kasmawan, I. G. Antha
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.v9i1.28903

Abstract

A study has been conducted on the effect of Focus Film Distance (FFD) on the collimation test values of stationary X-ray unit collimators for patient examinations. This research aims to determine the extent to which FFD affects collimation test values. The FFD variations used were 90 cm, 95 cm, 100 cm, 105 cm, 110 cm, 115 cm, and 120 cm. There are three tests in the collimation test: illumination test, collimation field discrepancy with X-ray beam, and X-ray beam perpendicularity. The illumination test was conducted using a lux meter, which was then averaged per FFD. The resulting illumination values corresponding to the FFD variations were 425.25 lux, 381.55 lux, 343.90 lux, 311.80 lux, 283.50 lux, 259.45 lux, and 238.20 lux. These results conform to the inverse square law. For the collimation field discrepancy values |dX| and |dY|, corresponding to the FFD variations, the values were 0.68 and 0.62; 0.32 and 0.34; 0.02 and 0.02; 0.10 and 0.08; 0.18 and 0.20; 0.34 and 0.32; 0.48 and 0.50, respectively. The X-ray beam perpendicularity value remained constant for all FFD variations at 1.03º. The values obtained from the three tests comply with the Indonesian Ministry of Health Regulation No. 1250/MENKES/SK/XII/2009 concerning Quality Control Guidelines for Radiodiagnostic Equipment.
Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique Anandika Putra, I Made Raditya; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Ratini, Ni Nyoman; Wibawa, I Made Satriya; Putra, I Ketut
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29017

Abstract

A study entitled Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique has been conducted. The study was conducted at the Radiotherapy Sub-Installation of Prof. Dr. I.G.N.G Ngoerah Hospital with the aim of determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90). Determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90) in cervical cancer patients is still within the recommended limits in ICRU Report 89. This study used ionizing radiation by inserting radioactive cobalt-60 using internal radiotherapy techniques, namely intracavitary brachytherapy. Before the irradiation process is carried out, there is a planning stage or Treatment Planning System (TPS). The reference for this research standard is for HRCTV of 95% -107% and for OAR bladder ≤80% rectum ≤75%. The average percentage of dose distribution received by HRCTV was 104.2% which is equivalent to 7.2 Gy which is still within the range of 95%- 107%, in the bladder it was 69.4% which is equivalent to 5.Gy which is still below the value ≤80%, and in the rectum it was 57% which is equivalent to 4.1 Gy which is still below the value ≤75%. The dose distribution value in HRCTV and OAR was still within the tolerance limit listed in the recommended value in GEC-ESTRO-ABS, and ICRU Report 89.
Analisis Dosis Serap pada Pemeriksaan Thorax Pasien Anak dengan Pesawat Sinar-X di Instalasi Radiologi RSUD Sanjiwani Gianyar Br Barus, Ema Vinesia; Ratini, Ni Nyoman; Trisnawati, Ni Luh Putu; Sandi, I Nengah; Wendri, Nyoman; Alit Paramarta, Ida Bagus
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30101

Abstract

Telah dilakukan penelitian mengenai analisis dosis serap pada pemeriksaan thorax pasien anak dengan pesawat sinar-X di Instalasi Radiologi RSUD Sanjiwani Gianyar. Penelitian ini bertujuan untuk menganalisis dosis serap yang diterima oleh pasien anak pada pemeriksaan thorax serta membandingkannya dengan batas dosis yang direkomendasikan oleh United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Penelitian ini dilakukan dengan metode kuantitatif menggunakan data sekunder dari hasil pemeriksaan thorax pasien anak berusia 1-15 tahun yang meliputi faktor eksposi (tegangan tabung, kuat arus, dan waktu eksposi). Data ini yang kemudian digunakan untuk menghitung dosis paparan dan dosis serap. Analisis statistik dilakukan dengan uji Kruskall-Wallis untuk menentukan signifikansi perbedaan dosis serap di RSUD Sanjiwani Gianyar dengan dosis serap yang ditetapkan oleh UNSCEAR. Hasil penelitian menunjukkan bahwa terdapat variasi dosis serap berdasarkan kelompok usia, di mana semakin tinggi usia pasien, semakin besar dosis serap yang diterima. Didapatkan dosis serap untuk kelompok usia 1-4 tahun yaitu:  mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Untuk kelompok usia 5-9 tahun didapatkan sebesar mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Sedangkan dosis serap kelompok usia 10-15 didapatkan sebesar  mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Dosis serap yang diperoleh di RSUD Sanjiwani masih berada di bawah batas dosis maksimum yang ditetapkan oleh UNSCEAR yaitu: untuk kelompok usia 1-4 tahun sebesar 0,0300 mGy, kelompok usia 5-9 tahun sebesar 0,0400 mGy, dan kelompok usia 10-15 sebesar 0,0500 mGy.
ESTIMATION OF PB AND TOTAL SUSPENDED SOLID (TSS) CONCENTRATION BASED ON REMOTE SENSING DATA Girsang, Dhea Vonisa; Yuliara, I Made; Ratini, Ni Nyoman
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.165

Abstract

Research has been carried out on the comparison of the concentration of Pb and Total Suspended Solid (TSS) of laboratory test results with Sentinel-2A satellite image data recorded on August 25, 2021 at the Suwung estuary dam, Denpasar city. The method used to compare the 2 measurement results is through testing by paired sample correlation and the graph. The result from the measurement show that the TSS value between Sentine-2A and laboratory has a fairly close value but  the Pb value  between Sentinel-2A and the laboratory have a much differences. The differences of the value between Sentinel-2A images and laboratory data can be caused by differences in the image recording time and field data collection time. This can result in changes or dynamics of water conditions that result in changes in the value and distribution Pb and then the radiometric influence of differences in Pb values ​​on images and laboratory data can be caused by radiometric influences or interference with wave propagation in the air.
ANALYSIS OF THE EFFECT OF THE X-RAY TUBE CURRENT ON UNIFORMITY IMAGE NOISE VALUES Mberato, Anastasya Jessning Gamalita Mberato; Ratini, Ni Nyoman; Yuliara, I Made; Irhas, Rozi
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.183

Abstract

This research aimed to evaluate the effects of the X-ray current tube on the uniformity value of CT image noise. This research used the CT images of Siemens head water phantom. The phantom was scanned with a Siemens Somatom Scope CT scanner for various current tubes (i.e., 180 mAs, 200 mAs, 220 mAs, 240 mAs, and 260 mAs) on tube voltage 110 kV, slice thickness 3 mm, and FOV 240 mm. The uniformity values in CT image noise were analyzed using the standard deviation value (SD). The SD was measured by the ROI process in 5 different locations, in the center and at 3 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock on the images CT. Based on the result of a simple linear regression test using IBM SPSS ver 25, it was found that the current tube significantly affected the uniformity value of image noise (r2=0,9768, p<0,05). This result showed that increasing the current tube can reduce image noise uniformity. The highest image noise uniformity value was at a current at 180 mAs with 0,217 HU, and the lowest was at 260 mAs with 0,031 HU. This result also shows that all the values are less than 2 HU and still within the acceptable limit by the BAPETEN standard regulation.
Analisis Arah dan Kecepatan serta Besar Persentase Fase Angin Menggunakan WRPLOT Tahun 2015-2020 di Stasiun Klimatologi Kelas II Paniki Atas Minahasa Utara Keintjem, Regina Gabriel; Baskoro, Winardi Tjahyo; Buana, Muhammad Candra; Nurmalasari, Nurmalasari; Trisnawati, Ni Luh Putu; Ratini, Ni Nyoman
Kappa Journal Vol 7 No 3 (2023): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i3.23907

Abstract

Weather and climate deviations have resulted in extreme weather in most parts of Indonesia which has triggered a number of natural disasters, such as tornadoes and floods that have occurred in various areas. It is necessary to know this in order to prevent something undesirable from happening. This writing aims to understand wind direction and speed and determine the percent of wind phases using WRPLOT V7.0 from 2015 to 2020. WRPLOT (Wind Rose Plots for Meteorological Data) is a windrose program for meteorological data. This software provides windrose diagram displays, frequency analysis and diagrams for several meteorological data formats. The data taken is wind data with the highest direction and highest speed recorded by the Class II Paniki Atas North Minahasa Climatology Station. Wind direction and speed data from 2015 to 2020 using WRPLOT obtained wind rose and wind speed graphs, namely 7 (from the dominant direction West), 2 (from the dominant direction Southeast), 2 (from the dominant direction South), and 1 (from the dominant direction Northeast), and the percentage of winds blowing from 2015 to 2020 at speeds ≥22 knots, namely more than 60%. Where the percentage of speeds ≥22 knots is highest in September and October with a percentage of 86%, while the percentage of speeds ≥22 knots is lowest in June with a presentation of 68.3%.
Co-Authors A. A. Ngurah Gunawan Alit Paramarta, Ida Bagus Anandika Putra, I Made Raditya Anastasia Jessing Gamalita Mberato Artawan, I Nengah Ayu Ratnawati, I Gusti Agung Balik Sudarsana, I Wayan Baskoro, Winardi Tjahyo Br Barus, Ema Vinesia Buana, Muhammad Candra Feriandanu Hakim Fitriyani Mus Mulyadi Girsang, Dhea Vonisa Grace Christine Djara Gusti Ngurah Sutapa Gusti Ngurah Sutapa Hanzani, Asril Hery Suyanto I Gde Antha Kasmawan I Gede Erix Krisna Adi Pramartha I Gusti Agung Ayu Ratnawati I Gusti Agung Ayu Ratnawati I Ketut Putra I Ketut putra, I Ketut I M. S. Wibawa I Made Yuliara I Made Yuliara I Nengah Sandi I Putu Eka Juliantara I Putu Tedy Indrayana I Putu Wesa Angga Jaya I Wayan Balik Sudarsana I Wayan Balik Sudarsana I Wayan Balik Sudarsana I Wayan Balik Sudarsana I Wayan Balik Sudarsana I Wayan Supardi I Wayan Supardi I. M. Yuliara I. M. Yuliara Ida Bagus Made Suryatika Ida Bagus Made Suryatika Ida Bagus Putu Priastana Bawa Indrayana, Putu Tedy Irhas, Rozi Jaya, I Putu Wesa Angga Kasmawan, I. G. Antha Keintjem, Regina Gabriel Komang Ngurah Suarbawa Komang Sugiarta Made Aditya Jaya Mahardika Maghfirotul Iffah Marcellino, Nathaniel Mberato, Anastasya Jessning Gamalita Mberato N. L. P. Trisnawati Nabilla Fatimah Ni Kadek Nova Anggarani Ni Kadek Nova Anggarani Ni Komang Tri Suandayani Ni Luh Emy Pramitha Ni Luh Putu Trisnawati Ni Putu Aprillia Artanti Phalosa Ni Putu Winiayu Veramika Ni Putu Yuni Nurmalasari Ni Wayan Mega Savira Utami Nurmalasari Nurmalasari Nyoman Wendri pandu lukito Paramarta, I. B. Alit Pingki Setyowati Dewi Prameswari, Else Putri Ayu Puja Satwika Luh Gede Putu Irma Wulandari Putu Wida Gunawan Ramadhan, Rafly Rizqyta Rozi Irhas Satriya Wibawa, I Made Selvi Marcellia Sismanto Siti Raudatul Jannah Suandayani, Ni Komang Tri Sudarsana, Wayan Balik Sumaja, Kadek Syarifuddin Syarifuddin Trisnawati, Ni Luh Putu Wahyulianti Wahyulianti Wayan Balik Sudarsana Winardi Tjahyo Baskoro Windarjoto Windarjoto Windarjoto Windarjoto Windarjoto Windarjoto Windarjoto, Windarjoto Windaryoto, Windaryoto Wiwik Kurniawati Yuli Nurfadhillah Yuliara, I Made