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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega Natural B BULETIN FISIKA Journal Of Vocational Health Studies Darmabakti Cendekia: Journal of Community Service and Engagements Jurnal Abdi Masyarakat Indonesia

Risalatul Latifah

Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam (FMIPA), Universitas Brawijaya - Indonesia

Author-ID : 431810

Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Physics Public Health Social Sciences

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TEKNIK AKTIVASI FOIL INDIUM UNTUK MENENTUKAN DISTRIBUSI NEUTRON TERMAL DALAM FANTOM PADAT DI BAWAH IRADIASI LINAC 15MV Risalatul Latifah; Johan A.E. Noor; Bunawas Bunawas
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 15, No 2 (2013): Juni 2013
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.087 KB)

Dewasa ini, penggunaan pesawat linear accelerator (linac) untuk kegiatan terapi pada penyakit kanker mulai intensif digunakan.Keuntungan utama linac dibanding dengan pesawat teleterapi adalah tidak lagi menggunakan sumber radioaktif serta memiliki variasi energi sehingga bisa disesuaikan dengan kebutuhan. Ketika sebuah pesawat linac dioperasikan di atas 10 MV, maka akan terjadi reaksi fotoneutron (γ,n) hasil dari interaksi energi sinar-X tinggi yang menumbuk material-material penyusun komponen pesawat linac seperti target, kolimator dan filter. Reaksi fotoneutron ini akan menghasilkan neutron. Pengukuran fluks neutron sangat penting untuk dilakukan terkait dengan keselamatan pada tindakan radioterapi dikarenakan emisi neutron ini merupakan radiasi sekunder yang akan menaikkan resiko kanker sekunder pada pasien akibat bertambahnya dosis radiasi yang diterima. Studi ini mengevaluasi fluks neutron yang dihasilkan oleh pesawat linac 15 MV menggunakan teknik aktivasi foil. Sebanyak 45 foil disisipkan dalam fantom padat yang diradiasi oleh linac untuk mengetahui besarnya fluks neutron terhadap fungsi kedalaman.Nilai yang didapat dimaksudkan untuk mengestimasi dosis tambahan untuk pasien ketika menjalani treatment menggunakan linac pada operasi di atas 10 MV. Dengan menggunakan hasil analisa spektrometer gamma dari foil indium yang teraktivasi, nilai fluks mengalami kenaikan seiring dengan bertambahnya kedalaman sampai pada 7 cm di bawah permukaan dengan nilai 2,6 x 106 ncm-2s-1 kemudian terus menurun seiring bertambahnya jarak. Pola ini terjadi karena adanya proses termalisasi neutron. Dengan menggunakan metode faktor konversi dosis neutron termal, maka diketahui dosis tambahan dari fluks neutron maksimum yang diterima pasien adalah 0,86 mSv/menit. Kontribusi dosis ini relatif kecil yaitu sebesar 0,1% dari dosis terapi.Kata kunci: Fluks neutron termal, LINAC, indium, fantom, aktivasi foil. Nowadays, using linear accelerator (LINAC) for therapeutic cancer activity intensively use. The advantages of linac compared to teletherapy plane are no longer using radioactive sources and have a variety of energy thus can be adapted to the needs . When a linac is operated above 10 MV , there will be a photoneutron reaction (γ,n) from the interaction of high X-rays energy striking the material components of linac such as target , collimator and filter. Photoneutron reaction will produce neutrons. Measurement of neutron flux is very important to the safety in the radiotherapy due to neutron emission is a secondary radiation that would increase the risk of secondary cancers in patients due to increasing the dose of radiation received . This study evaluated the neutron flux generated by the 15 MV linac using foil activation technique. The 45 foils inserted in a solid phantom irradiated by the linac to determine the neutron flux on the function of depth. This value will be used to estimate the additional dose to the patient while undergoing treatment using the linac operating above 10 MV. By using a gamma spectrometer analysis of the activated indium foil, flux values increase by adding depth of up to 7 cm below the surface with a value of 2.6 x 106 ncm-2s-1 and it would be decrease by increasing depth. This pattern occurs because the neutron thermalization process. By using the method of thermal neutron dose conversion factor, additional dose for maximum neutron flux that received by patients was 0.86 mSv/min. This dose contribution is relatively small, it is only 0.1 % of the therapeutic dose. Keywords: Thermal neutron flux, LINAC, indium, phantom, activation foil.

Insecticide Effects on Membrane Potential of Catfish Egg Cell (Clarias batrachus) Unggul Punjung Juswono; Kusharto Kusharto; Yeni Cahyati; Risalatul Latifah
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Pollution has been occured in our environment due to daily life waste, industrial and using of peptiside in agroindustrial farm. Over usuage and dose of peptiside could be harmfull to the farm environment especially for fish farm. Measurement of membrane potential of fish egg cells is a simple metode to investigate water polution level. Membrane potential of fish egg cells can be measured using microelectrode probe which is connected to an electrometer. The changing of membrane potential value indicate the level of water polution. Variation of peptiside concentrations cause the changing of potential membrane value. Increasing of peptiside concentration cause decreasing of potential membrane. Its may due to some blocking of channel and other protein by peptiside molecule so the permeability of membrane to ions is decrease. The results of our experiment show that the increasing of peptiside concentration cause decreasing of the membrane potential value. For peptiside concentration of 0.4% decrease potential membrane to -28 ± 5 mV. It means that the increasing peptiside concentration cause significanly decrease in potential membrane which may be used for prediction of water polution level.

Thermal Neutron Flux Measurements at Room Treatment LINAC iX 15 MV Risalatul Latifah; Johan A E Noor; Bunawas Bunawas
Natural B, Journal of Health and Environmental Sciences Vol 2, No 2 (2013)
Publisher : Natural B, Journal of Health and Environmental Sciences

Linac is operated at above 10 MV will generate secondary radiation in the form of neutron emission from the reaction of the high photon energy linac striking the material components of linac such us targets, collimators and filters. Secondary radiation will increase the probability of the secondary cancer risk in patients due to increasing the dose of radiation received. This study evaluated the thermal neutron flux at the indoor spatial operated 15 MV linac using foil activation method. A total of 14 Indium-115 foil placed in the treatment room were exposed to 15 MV linac plane for 1 minute. Results showed the highest flux are around isocenter . With the flux value of additional dose due to the neutron flux at Sv/menit. FLux decreases as distance function. Related to radiation protection efforts for radiation workers, the contribution coming from the neutron dose necessary acted upon by adding shielding on the door.

Estimation of the k-Value for Head CT Using ICRP-103 Tissue Weighting Factors Johan Andoyo Effendi Noor; Risalatul Latifah; Firdy Yuana
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p179-188

Multi-slice x-ray CT scanners are in highly use by physicians to assist them in diagnosing patients disease due to advances in their scanning speed, image processing and image quality. However, this trend results in patients being exposed to many fold higher doses compared to those for general x-ray radiography. This makes CT machines the major source of unwanted dose to the population from medical x-ray procedures. The CTDIvol and DLP parameters are quantities of concern in radiation protection measures. This study was aimed to examine the effective dose received by patients underwent head CT procedures In this paper we present our estimation of the k-value calculated from the DLP from the CT machine in the participating hospital using the ICRP 103 weighted tissue factor. Dose parameters were acquired from the machine and calculations were carried out using the ImPACT CTDosimetry software. We also compared the received doses by age and gender groups. We found that the doses are dissimilar between age groups and between male and female patients.

Pengukuran Kontaminasi Iodine (I-131) pada Staf yang Bekerja di Fasilitas Kedokteran Nuklir Risalatul Latifah; Johan Andoyo Effendi Noor; Mohammad Robet Kamel Rizqi Ilahil Aziz; Hafizhudin Kafaka; Bunawas Bunawas
BULETIN FISIKA Vol 25 No 2 (2024): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2024.v25.i02.p05

The increasing use of the radiopharmaceutical Iodine-131 (I-131) in nuclear medicine services has implications for the potential for internal radiation received by workers. I-131 has high volatility so it has the potential to become an air contaminant and be inhaled by nuclear medicine staff as internal radiation exposure. This study aims to estimate I-131 contamination in staff at a nuclear medicine facility using a gamma spectrometer. Measurements of I-131 activity in the thyroid were carried out on 38 staff including medical physicists, nuclear medicine specialists, radiographers, radio-pharmacists, nurses, house attendants, and cleaners. The I-131 activity value measured in the staff's thyroid had an activity value range of 13.1 – 238.2 Bq in 13 nuclear medicine staff. Meanwhile, for 25 other medical staff, the I-131 activity values ??measured in the thyroid had activity values ??below the detection limit of the device (14.2 ± 4.3 Bq for men and 11.8 ± 3.5 Bq for women). The highest internal dose rate measured in the thyroid of Pramu Husada nuclear medicine staff and radiopharmaceuticals was 0.1-0.5 mSv/year. This value is still below the dose limit value for internal radiation.

EVALUATION COMPARISON IMAGE QUALITY OF BREATH HOLD (SSTSE) AND RESPIRATORY TRIGGERING (TSE) TECHNIQUE TO THE EXAMINATION OF MAGNETIC CHOLANGIOPANCREATOGRAPHY (MRCP) Suroiyah, Nikky Anis; Latifah, Risalatul; Utomo, Sri Andreani
Journal of Vocational Health Studies Vol. 1 No. 2 (2017): November 2017 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V1.I2.2017.39-43

Background: Magnetic resonance cholangiopancreatography (MRCP) is MRI examination to visualize to visualize a disorder in part biliary or of the human bile. The artefact in the image MRCP is often happened due to the movement of respiratory system. Purpose: This study to compare the better image quality between Breath Hold (SSTSE) and Repiratory Triggering (TSE)techinques. Method: This study used observational analytic study with prospective approach. 16 samples were examined with two techniques SSTSE and TSE respectively in order to get 3D MRCP image. The Signal to Noise Ratio (SNR) and Contrast to Noise Ratio (CNR) is measured to evaluate the image quality. Result: The SSTSE technique only has a higher SNR in gallbladder meanwhile the TSE technique has a higher SNR in pancreatic duct. The higher CNR is got using TSE technique. Conclusion: The TSE showed the higher SNR in pancreatic duct and the higher CNR is got with SSTSE technique. The recommendation technique for evaluating pancreatic duct is respiratory triggering.

THE RADIATION DOSE PROFILE IN PEDIATRIC INTERVENTIONAL CARDIOLOGY TO ESTIMATE THE STOCHASTIC EFFECT RISK: PRELIMINARY STUDY Muqmiroh, Lailatul; Praptono, Soegardo Indra; Rusmanto, Rusmanto; Latifah, Risalatul; Sensusiati, Anggraini Dwi
Journal of Vocational Health Studies Vol. 1 No. 3 (2018): March 2018 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V1.I3.2018.107-112

Background: The specific characteristic of anatomy and physiology of children cause the risk of radiation effects received when they underwent the interventional cardiology procedures higher than an adult. Purpose: to estimate the stochastic effect risk in a pediatric patient during interventional cardiology procedures. Method: Data collection was performed by placing thermoluminescence dosimeter (TLD) on thyroid, gonad, left and right thoracic areas, and the 5th thoracic vertebrae during interventional cardiology. Result: The results showed that the greatest exposure was received around vertebrae (bone marrow) because of the superimpose X-ray on the vertebrae during the procedures. Conclusion: The greatest probability of stochastic effect that happened was leukemia. Estimation risk ratio of leukemia was 0, 9 % and thyroid cancer was 0,037%.

ANALYSIS OF FRACTIONAL ANISOTROPY (FA) VALUES AND APPARENT DIFFUSION COEFFICIENT (ADC) VALUES IN ISCHEMIC STROKE DISEASES OF MRI GE 3 TESLA Mustofa, Ali; Sensusiati, Anggraini Dwi; Muhaimin, Muhaimin; Utomo, Sri Andreani; Latifah, Risalatul
Journal of Vocational Health Studies Vol. 2 No. 3 (2019): March 2019 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Background: Diffusion Weighted Imaging and Diffusion Tensor Imaging is an advanced technique in MRI that shows the diffusion in brain of ischemic stroke disease. Diffusion Weighted Imaging (DWI) shows the lesions without gadolinium contrast agent and produce Apparent Diffusion Coefficient values. Whereas, Diffusion Tensor Imaging (DTI) shows connectivity's of central nervous system that cannot be seen by using conventional MRI. Diffusion Tensor Imaging produces Fractional Anisotropy values. Purpose:This study has aim to analyze the Apparent Diffusion Coefficient values and Fractional Anisotropy values in Stroke Ischemic disease. Method: Total samples used are 14 samples, consist of 7 (50%) man and 7 (50%) woman with ischemic stroke disease. Each sample deals by Diffusion Weighted Imaging and Diffusion Tensor Imaging sequences. The Region of Interest (ROI) is placed in ischemic stroke lesions and contra lateral side of lesions. Result: The result shows that 9 samples of brain tissue lesions located in the right side and 5 samples in the left side. Right lesions have the average ADC stroke: 0.001748; normal ADC: 0.000954; FA stroke: 0.144522; and normal FA: 0.426111. While, left lesions have the average ADC strokes 0.000979; normal ADC: 0.000835; FA stroke: 0.2556; and normal FA 0.4324. Conclusion: So, the conclusion of this study is Apparent Diffusion Coefficient (ADC) values in case of ischemic stroke can decreases or increases depend on the age of stroke. While, the Fractional Anisotropy (FA) values will decrease without being affected by age of stroke.

THE ROLE OF BLACK TEA AND PINEAPPLE JUICE AS NEGATIVE ORAL CONTRASTS ON MAGNETIC RESONANCE CHOLANGIOPANCREATOGRAPHY (MRCP) EXAMINATION Hapsari, Shinta J.; Latifah, Risalatul; Muhaimin, Muhaimin
Journal of Vocational Health Studies Vol. 2 No. 3 (2019): March 2019 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Background: Magnetic resonance cholangiopancreatography examination is a superior examination in the detection of anatomic structures or pathological abnormalities in the human pancreatobiliary system. This examination is recommended to use negative oral contrast which aims to eliminate gastrointestinal signals that are around the pancreatobiliary system which can be a barrier to the visualization of the pancreatobiliary tract. Materials that can be used as oral contrast contrast must be able to survive for a long time in the gastrointestinal tract and contain elements of iron (Fe) and Manganese (Mn). The high Mn content of black and pineapple juice and its abundance need to be explored as contrast oral negative. Purpose: To prove the role of pineapple juice and black tea which are natural ingredients of negative oral contrast in the visualization of the pancreatobiliary system on MRCP examination. Method: Experimental quasy studies have been carried out on 9 samples prospectively. Each sample underwent MRCP examination with three treatments, namely given black tea, pineapple juice and plain water. The image results from the three treatments were assessed by Radiology Doctors to assess the quality of their image. Result: The results showed that black tea was more effective in providing optimal image results on MRCP examination than pineapple juice and without using oral contrast contrast. The metal content of negative oral contrast can cause magnetic susceptibility which is characterized by the presence of shortening at the time of T2 relaxation. Negative contrast agents affect signal intensity usually by shortening T2 or T2 *, as an effect, areas of concern, especially areas with negative contrast agents will experience darkening. Conclusion: Black tea is effectively used as a negative oral contrat on MRCP examination.

DETERMINATION OF LOCAL DIAGNOSTIC REFERENCE LEVEL (LDL) PEDIATRIC PATIENTS ON CT HEAD EXAMINATION BASED ON SIZE-SPECIFIC DOSE ESTIMATES (SSDE) VALUES Latifah, Risalatul; Jannah, Naily Z.; Nurdin, Dezy Z.I; P, Budi
Journal of Vocational Health Studies Vol. 2 No. 3 (2019): March 2019 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Background: CT Scan provides the biggest contribution in receiving radiation doses in patients. Especially in pediatric patients or children. Local DRL (Diagnostic Reference Level) is an effort to optimize radiation for patients in every health facility. During this time the LDRL value is determined from the CTDIvol displayed from the CT Scan workstation. However, CTDI has a weakness which is irrelevant for wide-beam CT and is only a tool output dose, not paying attention to patient size. SSDE is a dose correction based on the patient's geometry. Purpose: This study aims to determine the estimation of pediatric patient dose profiles on head CT scan based on SSDE values to determine LDRL. Method: The study was conducted by collecting data on pediatric patient doses with an age range of 0-1 years, 2-5 years and 6-10 years who underwent a head CT scan within the period from July to December 2017. The samples were measured lateral and anterior-posterior diameter for determine the correction factor. The results of the CTDIvol record and conversion factor will determine the SSDE value. The third quartile data from SSDE is specified as LDRL. The SSDE value in the three groups shows the same trend which is smaller than the CTDIvol value. The correction of the factor gives estimates of doses received by patients reduced by 2.6%, 8.5% and 20% respectively for ages 0-1 years, 2-5 years and 6-10. Acceptance of patient doses is influenced by tube tension, filament current, rotation time, scan length, number of phases and pitch. Conclusion: From the results of the SSDE value, DRL values can be determined for the age group 0-1 years, 2-5 years and 6-10 years respectively 23,1±1,5 mGy, 24,3± 1,8 mGy and 27, 5± 10,5mGy.

Co-Authors Achmad Hidayat Ali Mustofa Aprilia, Faridha Baroatul K, Lia Budi P Bunawas Bunawas Bunawas Bunawas Bunawas Bunawas Bunga Puspita, Mayang Dewi ANGGRAENI Firdy Yuana Hafizhudin Kafaka Hapsari, Shinta J. Jannah, Naily Z. Johan A E Noor Johan A.E. Noor Johan Andoyo Effendi Noor Johan Andoyo Effendi Noor Kusharto Kusharto Mohammad Robet Kamel Rizqi Ilahil Aziz Muhaimin Muhaimin Muqmiroh, Lailatul Nikky Anis Suroiyah, Nikky Anis Nurdin, Dezy Z.I Praptono, Soegardo Indra Puspita, Mayang Bunga Rosyid, Muhammad Rusmanto, Rusmanto Sensusiati, Anggraini Dwi Sheliyana, Putri Sri Andreani Utomo, Sri Andreani Triswantoro Putro Unggul Punjung Juswono Yeni Cahyati

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