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All Journal Buletin Udayana Mengabdi Bumi Lestari BERKALA FISIKA Jurnal Keselamatan Radiasi dan Lingkungan Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Physical Review Kappa Journal
Gusti Ngurah Sutapa
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 Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Physics Other

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Analisis Dosis Efektif pada Pemeriksaan Computer Tomography (CT) Scan Abdomen di RSU Bali Jimbaran Farah Sukmana; Gusti Ngurah Sutapa; I Gde Antha Asmawan; Rozy Irhaz
Kappa Journal Vol 6 No 2 (2022): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v6i2.6115

Abstract

Telah dilakukan analisis dosis efektif dalam pemeriksaan CT Scan abdomen di RSU Bali Jimbaran. Penelitian dilakukan dengan menggunakan data sekunder hasil pemeriksaan CT Scan abdomen seperti nilai CTDIVol, DLP, arus, tegangan dan panjang scan. Data dikelompokkan berdasarkan jenis kelamin yakni 25 orang pasien laki laki dan 25 orang pasien perempuan. Nilai dosis efektif didapatkan dari hasil kali nilai DLP dengan faktor konversi (k). Analisis dosis efektif dilakukan menggunakan nilai DRL standar peraturan Kepala Bapeten dan ICRP 102. Dari hasil perhitungan diperoleh dosis efektif pada pasien laki laki sebesar 5,8707±0,80 mSv sedangkan pada pasien perempuan sebesar 5,5261±1,08 mSv. Nilai-nilai dosis tersebut masih sesuai dengan standar yang ditetapkan oleh Bapeten dan ICRP sehingga pesawat CT Scan tersebut masih layak digunakan untuk pemeriksaan CT Scan abdomen
Estimasi Dosis Radiasi Sinar-X Terhadap Efek Herediter Pada Radiografi Konvensional Sylvia Ariska Susanti; Gusti Ngurah Sutapa; Maghfirottul Iffah
Kappa Journal Vol 6 No 2 (2022): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v6i2.6467

Abstract

A study has been carried out on the estimation of X-ray dose on hereditary effects on conventional radiography. The research was conducted at the Bali Academy of Radiodiagnostic and Radiotherapy Engineering using a Raysafe X-Ray Multimeter. Secondary data was obtained in the form of results of checking the output voltage (kV), exposure time (ms) and exposure (mGy). The data obtained are then grouped according to the voltage used. The data is used to calculate the Entrance Surface Dose (ESD) value, which is then used to find the value of the Hereditary effect on the examination of each organ. In this study, the lowest ESD value was found at the use of a voltage of 40 kV, namely 0.3737 mGy, while the highest ESD value was at the use of a voltage of 80 kV, which was 0.7328 mGy. Based on the calculation of hereditary effects for generation I has the highest probability compared to generation II, this is very dependent on the ability of cells after exposure to radiation. Cells in general can make natural repairs. The longer the time after exposure to radiation, the more cells have the opportunity to repair the effects of radiation. So the probability of the risk of hereditary effects in generation II will be smaller.
Analisis Pengaruh Field of View (FOV) Terhadap Kualitas Citra Pesawat CT Scan di RSU Bali Jimbaran Widya Karulina Imanda Muhamad; Gusti Ngurah Sutapa; I Gde Antha Asmawan; Rozi Irhas
Kappa Journal Vol 6 No 2 (2022): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v6i2.6116

Abstract

It has been investigated the effect of field of view (FOV) on image quality produced by a CT Scan using the noise uniformity method with a phantom head. The FOV variations used are 180, 200, 220, 240 and 260 mm. The exposure time current and tube voltage used are 220 mAs and 130 kV, while the scan length and slice thickness used were 40 mm and 3 mm. Analysis of the effect of FOV variation on noise uniformity is determined by the standard deviation value obtained when performing ROI. Based on the standard deviation value, which shows that FOV variation affects the noise uniformity value, where the large increase in FOV, the noise uniformity is getting smaller and the resulting image quality is getting better
DETERMINATION OF HALF AND TENTH VALUE LAYER PRIMARY AND SECONDARY WALLS OF X-RAY ROOM IN BALI JIMBARAN GENERAL HOSPITAL Widianingsih, Ni Kadek Indah; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Sandi, I Nengah; Baskoro, Winardi Tjahyo; Wendri, Nyoman; Prayuda, I Made Ardi
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.250

Abstract

The research has been carried out on the HVL and TVL values ​​of the primary and secondary walls of the radiology installation radiology room at RSU Bali Jimbaran. The aims of this study were (1) to determine HVL and TVL values ​​on the primary and secondary walls in the x-ray room, (2) to determine the differences between HVL and TVL values ​​if the tube voltages are varied. In determining the HVL and TVL values, ​​the linear attenuation coefficient of the walls must be known. The linear attenuation coefficient was determined by measuring the wall thickness by using a caliper, and measuring the radiation dose rate before and after passing through the primary and secondary walls. The results of the analysis of the HVL and TVL values ​​on the primary wall were 1.668 cm and 5.540 cm, meanwhile on the secondary wall ​​were 1.915 cm and 6.362 cm. When the voltage was varied 40 kV, 50 kV, 60 kV and 70 kV, there was no difference in the HVL or TVL values. Based on the results of the analysis, the HVL and TVL values ​​on the primary and secondary walls have a significant average difference.
ESTIMATION OF RADIATION DOSE AND ORGANS AT RISK (OAR) ON ABDOMINAL CT-SCAN USING SIZE-SPECIFIC DOSE ESTIMATES (SSDE) METHOD Sari, Kamelin Diah; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Sandi, I Nengah; Artawan, I Nengah; Trisnawati, Ni Luh Putu; Widiana, I Komang
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.265

Abstract

A study has been carried out on the estimation of radiation dose and Organs at Risk (OAR) on abdominal CT-Scan examination using the SSDE method. The data used in this study were secondary data from medical records such as CTDIVol, DLP, and abdominal images of patients. This study aims to determine the size of SSDE, DE, and DEOAR and to determine whether DE is still within tolerance limits to ensure the feasibility of using CT-Scans in these installations. The SSDE value is obtained by multiplying the converted def value (f) and the CTDIVol, while the DE value is obtained by multiplying the DLP value and the conversion factor (k), finally, the DEOAR value is obtained by multiplying the CTDIVol and the organ/tissue weight factor. The results showed that the patient's average SSDE score was 12.04 ± 1.06 mGy, with a male SSDE value of 12.55 ± 1.30 mGy and a female SSDE value of 12.38 ± 2.47. While the average patient DEOAR value obtained was 7.57 ± 0.72 mGy and the patient's average DEOAR value for skin and bone surface was 0.09 ± 0.01 and red bone marrow and large intestine was 1.06 ±0.13. The DE value of this study is still below the tolerance value set by BAPETEN, which is less than 17.46 mGy.
Pengaruh Multi Leaf Collimator (MLC) Terhadap Besar Dosis Yang Diterima Bagian Kepala Pasien Kanker Otak Huki, Pascalia Agno Marina; Sutapa, Gusti Ngurah; Sudarsana, I Wayan Balik
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.6633

Abstract

Research has been conducted on the effect of Multi Leaf Collimator (MLC) on the dose received by the head of brain cancer patients at Sanglah Hospital, Denpasar. This analysis aims to determine the effect of using MLC on dosing to brain cancer patients using Cobalt 60 (Co-60) teletheraphy. The dose given at TPS was 200 cGy but after using MLC the dose was received because MLC protects healthy organs around the irradiation field. If the dose given is still within the range of -5  % and +7  %, it is still acceptable. The amount of radiation dose that can be reduced by using MLC in this study was 1,35 % for brain cases and 0,12 % for Glioblastoma cases. 
Pengaruh Sinar Ultraviolet Terhadap Jamur Aspergillus Niger Ayu Ratnawati, I Gusti Agung; Putra, I Ketut; Suryatika, Ida Bagus Made; Sutapa, Gusti Ngurah; Trisnawati, Ni Luh Putu
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.12252

Abstract

Along with the development of science and technology, some researchers try to apply knowledge to several biological systems to obtain benefits that can be used. One of them is the use of ultraviolet light to kill the fungus Aspergillus niger. In addition, ultraviolet rays are also used in various fields of the drinking water industry, food, and also for sterilizing operating rooms in hospitals. A method used in this problem is the cork borer method. Data were obtained by measuring the diameter of the inhibition zone of the Aspergillus niger fungus. The results of this study were obtained at the intensity of 12.30 lux and at a distance of 15cm, within 15 minutes of irradiation time, the maximum death of the fungus Aspergillus niger was 40.74%.
Estimasi Dosis Serap dengan Metode Size Specific Dose Estimation (SSDE) dan Risiko Radiasi pada Pemeriksaan CT-Scan Kepala di Rumah Sakit Daerah Mangusada Kabupaten Badung Saputra, Eka; Sutapa, Gusti Ngurah; Paranditayana, I Nyoman
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.12985

Abstract

CT scan -Scan Those originating from X-rays on the head are very risky considering that the tissue in the brain has a greater sensitivity to ionizing radiation when compared to other organs in the human body. Problems will then arise when the use of CT-Scan sourced from X-rays can pose a radiation risk. Based on research conducted by Mathews et al. (2013) reported that at least 680,211 patients who had performed CT-Scan, 3,150 patients were diagnosed with cancer. There is a more accurate method in estimating the dose received by patients, namely using the SSDE. The dose estimation method using SSDE considers geometric factors (body size). The purpose of this study was to see how weight, gender, and age affect SSDE, using 80 patients classified into 4 age groups (children, adults, elderly, and seniors). The results showed that the average effective dose for children was 4.065 mSv for males and 3.706 mSv for females with a significant effect of weight, sex, and age on SSDE because theFCount as big4,640    FTableof 2.215
Analisis Diagnostic Reference Level (DRL) Pasien Pada Pemeriksaan Abdomen Kontras dan Nonkontras Dengan Pesawat CT Scan Di RSUD Bali Mandara Br Ginting, Venesia Sesilia; Sutapa, Gusti Ngurah; Ratnawati, I Gusti Agung Ayu; Widiana, I Komang
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.18985

Abstract

In this study, data were obtained from 35 patients aged 27-76 years. The current used varies from 46-185 mAs and a constant tube voltage of 130 kV, with different clinical symptoms. The patient's DRL value on contrast and non-contrast abdominal examination was determined by calculating the third quartile value. On non-contrast abdominal examination, the DRL CTDIvol value was 10.62 mGy and the DLP DRL was 607.76 mGy.cm and on the non-contrast abdominal examination, the DRL CTDIvol value was 32.73 mGy and the DRL DLP value was 1825.10 mGy.cm. These results indicate that the DRL CTDI vol and DRL DLP values on contrast abdominal examination at Bali Mandara Hospital were still below the actor's limits set by BAPETEN, while on abdominal examination the DRL CTDI vol and DRL DLP values exceeded the limits set by BAPETEN. This is caused by exposure which is done three times. Therefore, it is necessary to restore both the Patient Operational Standards (SOP) and the exposure factor on an abdominal contrast CT scan at Bali Mandara Hospital.
Uji Kesesuaian Kinerja Generator dan Tabung Sinar-X pada MSCT Philips 128 Slice di Instalasi Radiologi, Rumah Sakit Daerah Mangusada Ramadan Purnama, Muhammad Mada; Sutapa, Gusti Ngurah; Pranditayana, I 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.v7i3.22548

Abstract

This research aimed to determine the Compliance test of MSCT Philips 128 Slice generator and X-ray tube performance at Mangusada Hospital in accordance with the tolerance limits based on the BAPETEN Head Regulation of the Republic Indonesia Number 2 of 2022 so that it can be stated that the generator and X-ray performance is in reliable condition. In this research, Raysafe Xi CT and Raysafe Xi R/F were used to measure the output value of radiation dose, tube voltage and HVL thickness on MSCT Philips 128 Slice by carrying out four test activities, namely radiation output reproducibility test, radiation output linearity test,  test, and X-ray beam quality test. The performance test of the generator and X-ray tube has been carried out on MSCT Philips 128 Slice with obtained Coefficient of Variation (CV) value in the radiation output reproducibility test of 0.00278, Coefficient of Linearity (CL) value in the radiation output linearity test of 0.00882,   at a tube voltage of 80 kVp is 6.30280 mGy/100mAs,  at a tube voltage of 120 kVp is 19.59800 mGy/100mAs,  at a tube voltage of 130 kVp is 24.48431 mGy/100mAs, and the HVL thickness at a tube voltage of 120 kVp is 8.79 mmAl. This result show that the performance MSCT Philips 128 Slice generator and X-ray tube in reliable condition.
Co-Authors A. A. Ngurah Gunawan A. A. Ngurah Gunawan Ade Nisa Dali Sinaga Ade Rama Ditya Arsana Karang Adnyana, I Gusti Agung Putra Agnes Maria Salvi Anastasia Victor Anastasia Jessing Gamalita Mberato Artawan, I Nengah Asril Hanzani Aulia Nur Aisah Ayu Ratnawati, I Gusti Agung Balik Sudarsana Br Ginting, Venesia Sesilia Chasbas Putra Tamba Choirul Anam AM Diponegoro Cory Amelia Djarwani Soejoko Eka Saputra Else Putri Ayu Prameswari Elshaday S.B Siregar Farah Sukmana Gde Ari Mas Janudinata Hendra Setiawan Hery Suyanto Huki, Pascalia Agno Marina I Dewa Ayu Sintiya Biantari I Gde Antha Asmawan I Gde Antha Asmawan I Gde Antha Kasmawan I Gusti Agung Ayu Ratnawati I Gusti Agung Ngurah Ari Kusuma Putra I Ketut Putra I Ketut putra, I Ketut I Made Gede Mas Prawistya Putra I Made Hendra Hadinata I Made Raditya Anandika Putra I Made Yuliara I Nengah Artawan I Nengah Sandi I Nengah Sandi I Nengah Simpen I Nyoman Pranditayana I Nyoman Yosua I Putu Surya Dharma Negara I Putu Tedy Indrayana 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 Balik Sudarsana I Wayan Balik Sudarsana I Wayan Balik Sudarsana I Wayan Gede Suharta I Wayan Putu Sutirta Yasa I Wayan Supardi I. B. Alit Paramarta I. G. Antha Kasmawan I. M. Yuliara I. M. Yuliara I.M. Yuliara Ida Ayu Putu Aristia Hutami Ida Bagus Alit Paramarta Ida Bagus Alit Paramartha Ida Bagus Made Suryatika Ida Bagus Putra Manuaba Ida Bagus Putu Priastana Bawa Ida Bagus Suryatika Johanes J. Silalahi Kadek Miniati Kadek Sumaja Kadek Yuda Astina Ketut Putra Komang Ngurah Suarbawa M. Zully Amrul Hadi Made Yuliara Maghfirottul Iffah Mega Wahyu N. L. P. Trisnawati Nabilla Fatimah Nathaniel Marcellino Nengah Sandi NEVIATY PUTRI ZAMANI Ni Kadek Ayu Asari Dewi Ni Kadek Nova Anggarani Ni Komang Tri Suandayani Ni Komang Tri Suandayani Ni Komang Tri Suandayani Ni Luh Putu Trisnawati Ni Luh Putu Trisnawati NI LUH WIDYASARI Ni Made Purmita Sari Ni Nyoman Ratini Ni Nyoman Rupiasih Ni Nyoman, Ratini Ni Putu Aprillia Artanti Phalosa Ni Putu Pande Anita Yulianti Ni Putu Winiayu Veramika Ni Putu Yuni Nurmalasari Ni Putu Yuni Nurmalasari Ni Wayan Ekayani Nurfaizah Nurfaizah Nyoman Wendri Paranditayana, I Nyoman Poniman, S. Pranditayana, I Nyoman Prayuda, I Made Ardi Putu Gede Agus Krisna Yogantara Putu Suardana Ramadan Purnama, Muhammad Mada Retianingsih Oeta Ulan Romadhon Ilham Imani Rozi Irhas Rozi Irhas Rozi Irhas Rozi Irhas Rozi Irhas Rozy Irhaz Sanjaya Natadiredja Sari, Kamelin Diah Satriya Wibawa, I Made Setiono, Made Budi Suandayani, Ni Komang Tri Sudarsan, I Wayan Balik Sudarsana, I Wayan Balik Sukarasa, I Ketut Sylvia Ariska Susanti Titik Purwanti Tjahyo Baskoro, Winardi Trisnawati, Ni Luh Putu Wayan Balik Sudarsana Wayan Balik Sudarsana Wayan Balik Sudarsana Wayan Balik Sudarsana Widiana, I Komang Widianingsih, Ni Kadek Indah Widya Karulina Imanda Muhamad Winer Johan Bora Yohana Dian Savitri Yuli Asri Yuliara, I Made Zofi Dwi Prihatini