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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 6 Documents
 1 
Search results for , issue "Vol 3, No 1 (2016)" : 6 Documents clear
Time and Entropy: The Two Sides of The Same Medal in Ideal Open Systems Horst Josef Koch
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

The second thermodynamic law implies a continuous  increase of        entropy with time and a formal relation of both characteristics.        Based on observations in ideal biophysical diffusion processes the letter presents a    model that substantiates an exponential relationship            between time and entropy.
Dose Volume Product (DVP) As Descriptor for Estimating Total Energy Imparted to Patient Undergoing CT Examination Choirul Anam; Freddy Haryanto; Rena Widita; Idam Arif; Geoff Dougherty
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

The purpose of this study is to expand a descriptor for estimating the total energy imparted to a patient undergoing a CT examination and to investigate its relationship to the currently used descriptor. Estimating the total energy imparted to a patient has previously been characterized by dose length product (DLP). We propose a descriptor which we call the dose volume product (DVP), defined as the product of the size specific-dose estimate (SSDE) and the volume irradiated in the patient (V). We also present algorithm to automate the calculation of DVP. There are several steps in calculating the DVP: the first is to contour the patient automatically, the second is to calculate the area of patient in every single slice, the third is to calculate the volume of the radiated part of the patient, the fourth is to calculate the water equivalent diameter (DW) automatically, the fifth is to calculate the SSDE, and the last is to calculate the DVP. To investigate the effectiveness of the algorithm, we used it on images of phantoms and patients. The results of this study show that the automated calculations of DVP for both body and head phantoms were in good agreement with theoretical calculations. The differences between them were within 2%. DVP and DLP had a linear relationship with R2 = 0.971 (slope 1099 cm2, 95% confidence interval (CI), 1047 to 1157 cm2) and R2 = 0.831 (slope 248.6 cm2: CI, 237.6 to 259.7 cm2), for thorax and head patients respectively.
New face of Journal of Medical Physics and Biophysics: a reflection of new spirit from a new organization Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

The meeting in Yogyakarta in November 2015 marked a new chapter of Medical Physics educational, scientific, and professional development in Indonesia; a new professional body, declared as Indonesian Association of Physicists in Medicine, was born a result of unification between Indonesian Medical Physics and Biophysics Association and Indonesian Medical Physicists Association. This long-awaited milestone was reached as a mutual agreement and recognition between the founders, prominent figures, and members of the two groups of medical physicists, academia, and scientists. The unification was followed by a major re-organization during which a new committee with a set of new people was involved in setting new foundations of the newborn organization. This great labor includes also a setting of a new board responsible for scientific publications, reflected on the change of JMPB’s look and how it runs.    In this issue, readers and authors of JMPB might have noticed some change in the face and looks in the articles—the layout, the cover, and the structure. Whereas the journal previously accommodates medical physics-related sections of Diagnostic and Interventional Imaging, Radiation Therapy, Nuclear Medicine, Experimental Biophysics, and Computational Biophysics, the new format introduces new sections of Radiological Protection, and Review Article, enabling a broader possibility of research scope published in JMPB. These new arrangements, however, is made complex with the shift of technical team members working behind the screen, causing a major delay in article processing. To add to that extent, JMPB also experienced a catastrophic technical issue on our web server, which has not been resolved until recently. Therefore, I believe it is both timely and appropriate to extend the team’s sincere apologies for any inconvenience caused. I, now, in the new spirit as new as the new look of the journal, encourage more submissions to JMPB for a wider audience, and to support this new organization facing its new dawn.
A Preliminary Study of Percentage Breast Glandularity of Bangladeshi Women from Mammography Data Meherun Nahar; Md. Sazzad Hossain; Abdus Sattar Mollah; Mir Md. Akramuzzamsan
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

 Abstract: A study was made to estimate mammographic breast glandularity in Bangladeshi women from generic radiographic data. The primary objective of this study was to determine the percentage of breast glandularity of Bangladeshi women which will affect mean glandular dose (MGD) during diagnostic mammography. The secondary objective was to evaluate some of the factors affecting women’s glandular tissue. A fitted equation was applied for 80 women who underwent diagnostic mammography. The values of compressed breast thickness (CBT), mAs and target/filter combination, were collected for 80 women ranging in age from 21 to 70. The average breast glandularity of the study sample was 43.7% ± 17.35%. Breast glandularity was found to decrease with breast thickness and age. No significant variation of mean glandularity has been found with Body Mass Index (BMI).
Evaluation of Radiation Workers Occupational Doses for Newly Established Medical Center NORIN Nawabshah in Pakistan Abdul Razaq; Muhammad Waqar; Quratulain Soomro; Muhammad Ali Javaid
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

AbstractThe purpose of this study is the evaluation of radiation doses received by radiation personnel in newly established medical Centre, Nuclear Medicine Oncology and Radiotherapy Institute Nawabshah (NORIN) Pakistan. In this study the annual dose data of workers for the year 2013 and 2014 in different sections will be analyzed using different statistical methods and results. It will be discussed that how we careful in occupational radiation dose and comparison with national and international organization will be done to know that the facility in NORIN for radiation protection is reasonable and satisfactory.
Wedge Factor Dependence on Computer Controlled Wedge System in Siemens ONCOR Linear Accelerator. Nasir Ilyas; Salman Farrukh; Jawed Iqbal; Syed Abdul Haseeb Ahmad
Journal of Medical Physics and Biophysics Vol 3, No 1 (2016)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

Wedge factor is the measurements which shows how much dose reduces to the target after introducing wedge between the source and target. In this work we will obtain the wedge factors by using VW (Virtual wedge) and Physical Wedge (PW) for different field sizes ( 10 x 10 cm2 ,15 x 15 cm2 and 20 x 20 cm2) , wedge angles (15°, 30° ,45° and 60° ) and energies (6 MV and 15 MV). This work will be carried out on Siemen’s linear accelerator (LINAC) and Iba-blue water phantom is used for scanning purpose. CC 13 ionization chamber is used for PW and LDA 99 for VW. The source to surface distance and depth in our work remain 100cm and 10 cm respectively. These detectors will be connected through different electrometers and all the observation will be taken through Omnipro version 7, a dosimetric software. The wedge factors will be plotted against various field sizes for both energies and wedge angles. The mean wedge factor will be analyzed by using Statistics package for social sciences (SPSS, V15) as a function of field size, wedge angle, energy and type of wedge to obtain the significance of these factors .If Analysis of Variance (ANOVA) were performed on the mean wedge factor by using F-test. The observations shows that wedge factor increases with field size and energy in both these conditions this increment is not statically significant , Wedge factor (WF) decreases with wedge angle also not statistically significant. The wedge factor in VW is greater than PW, it is highly statistically significant. 

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