cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
,
INDONESIA
Journal of Medical Physics and Biophysics
Published by Himpunan Fisika Medis dan Biofisika Indonesia
ISSN : 23552727     EISSN : 23552719     DOI : -
Core Subject : Health, Science,
Medicine & Pharmacology Physics
Journal of Medical Physics and Biophysics is a gold open-access journal and serves as official publication media of the Indonesian Association of Physicists in Medicine, IAPM (Aliansi Fisikawan Medik Indonesia, AFISMI). JMPB publishes articles with the general concern on the application of physics in medicine and the biological system. The role of physics highlighted in the journal can be of theoretical, experimental, or clinical nature. Review and original articles in radiation oncology, diagnostic and interventional radiology, nuclear medicine, biomaterial, physical biology, physical modeling of biological system, and other related sciences are welcome. Any opinions stated on the articles published in JMPB are those of the author(s) and do not necessarily reflect the policy of IAPM/AFISMI unless otherwise stated.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2019)" : 5 Documents clear
Pengaruh Antiscatter grid Terhadap Dosis dan Kualitas Citra pada Prosedur Radiologi Intervensional Eka Aulia Ardyanti; M. Roslan Abdul Gani; Lukmanda Evan Lubis; Djarwani Soeharso Soejoko
Journal of Medical Physics and Biophysics Vol 6, No 1 (2019)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (713.963 KB)

Abstract

The study discusses the threshold of thickness required for antiscatter grid use on Siemens Artis Zee at “Dharmais” National Cancer Center, Jakarta. The device has adjustable modes of low, medium, and high fluoroscopy. Patients are represented by Polymethyl Methacrylate (PMMA) phantom with a thickness variation of 7-22 cm of 1 cm interval. The dose metrics was measured as the entrance skin dose (ESD) and the transmission dose, while the image quality metric employed being signal to noise ratio (SNR), leading the result to FOM as squared SNR per dose. The FOM bridged dose and image quality to determine threshold of antiscatter grid usage on fluoroscopy based on fantom thickness. As a result, antiscatter grid are recommended to be used for objects 11 cm and thicker on the use of low fluoroscopy mode, and 16 cm and thicker objects on high fluoroscopy mode. In medium fluoroscopy mode, no threshold was yielded due to tube current being higher than other modes, hence it is recommended to remove the antiscatter grid during the use of the medium fluoroscopy mode
The Effect of Casein Addition in Carbonate Apatite Mineral Crystallization Nur Aisyah Nuzulia; Savitri Damayanti; Serin Imsa Arizuni; Yessie Widya Sari
Journal of Medical Physics and Biophysics Vol 6, No 1 (2019)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.824 KB)

Abstract

Milk protein has been considered as one of the influenced factors in bone mineral crystallization. Bone mineral is mainly formed by carbonate apatite in which the crystallization process depends on the two main processes, nucleation and crystal growth. This study showed the formation of carbonate apatite by using precipitation method and observed the influence of casein, milk protein, in carbonate apatite nucleation through synthesis and crystal growth through immersion in SBF.  The result showed that carbonate apatite type B was formed by using precipitation method with chicken eggshells as calcium precursor. The addition of casein concentration could promote the apatite nucleation and crystal growth with low casein concentration ( ≤ 7.5 g.l-1) while high casein concentration addition plays role as an inhibitor.
Peranan litbang Fisika Medik dalam memperbaiki penerapan proteksi radiasi pasien di Radiologi Diagnostik, Kedokteran Nuklir dan Radioterapi Nur Rahmah Hidayati
Journal of Medical Physics and Biophysics Vol 6, No 1 (2019)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9.888 KB)

Abstract

Monitoring harian pesawat linac dengan EPID: studi pendahuluan Andrian Dede Handika; Sugiyantari Sugiyantari
Journal of Medical Physics and Biophysics Vol 6, No 1 (2019)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (549.323 KB)

Abstract

Took place in Persahabatan Hospital, Department of Radiotherapy, a research has been held using Linac Elekta Precise equipped by EPID (Electronic Portal Imaging Device). The research is focused on daily measurement on Linac using EPID and Ionization Chamber which the results were compared in effort to use EPID as alternative detector for daily measurement on Linac. The Linac Elekta Precise used in this research was equipped with EPID iViewGT a-Si flat panel with energy consist of 6 MV and 10 MV, 160 cm SDD (Source to Detector Distance), MU variations between 95-105 MU with 1 MU interval, and measured on 10 cm x 10 cm for the field size. Linac’s daily consistent measurement was held with 100 MU exposure and similar Linac’s parameter every day. EPID’s image beam profile evaluation was held along inplane and crossplane axis. The result is EPID’s calibration show a linear relation between pixel value and MU for both of energy beam (6 MV and 10 MV). Specifically, for Linac’s daily consistent measurement with 100 MU, the result show 3% deviation rate in general for both of energy beam which similar with Ionization Chamber measurement result. Flatness and symmetry that acquired from EPID’s image profile show no more than 2% deviation rate which still in tolerance limit. In conclusion, EPID’s daily image profile evaluation which covered output consistency, flatness, and symmetry beam profile show that EPID could be used for alternative detector for daily beam profile monitoring.
Pengukuran MTF (Modulation Transfer Function) berdasarkan LSF (Line Spread Function) dan PSF (Point Spread Function) pada pesawat PET/CT dan SPECT/CT Sharah Nataz Shilfa; M. Roslan Abdul Gani; Intan Apriliani Syaridatul Mu’minah; Fery Ardiansyah; Lukmanda Evan Lubis; Djarwani Soeharso Soejoko
Journal of Medical Physics and Biophysics Vol 6, No 1 (2019)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (849.004 KB)

Abstract

This study aims to know the value of MTF obtained by using two methods: LSF (Line Spread Function) and PSF (Point Spread Function) on PET/CT and SPECT/CT. Measurement done with LSF method performed by thin flood source 18F or 99mTc 12 mCi, while PSF using thin line source 18F atau 99mTc 2 mCi with diameter 0.5 mm. The MTF calculations are performed based on image profile, for PET/CT assisted by 3 filter types and 4 reconstruction algorithms while SPECT/CT based on collimator variation. MTF calculation method have done based on Tsujioka et al. (2014) by combining the ImageJ, MATLAB, and Origin spreadsheet. System performance is determined at 10% MTF. The measurement results on PET/CT showed MTF highest value obtained by the Butterworth filter and reconstruction algorithm Iterative, Iterative 3D, and Backprojection with identical MTF value (0.155 cycles/mm) for LSF method, while PSF method by using Butterworth filter and Backprojection reconstruction algorithm obtained value 0.15 cycles/mm. In SPECT/CT, the second detector with LEHR collimator give MTF value to the LSF method and PSF method sequently 0.104 cycles/mm and 0075 cycles/mm. Based on the advantages and disadvantages of both methods, generally the PSF method is recommended as a spatial resolution QC program for nuclear medicine modalities.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2019 2019


Reset
Filter By Issues
All Issue Vol 10, No 1 (2023) Vol 9, No 1 (2022) Vol 8, No 1 (2021) Vol 7, No 1 (2020) Vol 6, No 1 (2019) Vol 5, No 2 (2018) Vol 5, No 1 (2018) Vol 4, No 1 (2017) Vol 3, No 1 (2016) Vol 2, No 1 (2015) Vol 1, No 1 (2014): Inaugural Issue More Issue