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Journal of Medical Physics and Biophysics
ISSN : 23552727     EISSN : 23552719     DOI : -
Core Subject : Health, Science,
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 3 Documents
Search results for , issue "Vol 8, No 1 (2021)" : 3 Documents clear
Designing an analysis system for imaging process from bone scintigraphy as a potential predictor for validation of bone metastases Herlina Zainal; Hanif Afkari; Alexander Agung; Gani Gunawan
Journal of Medical Physics and Biophysics Vol 8, No 1 (2021)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

Cancer is a disease that is the leading cause of death worldwide. In 2012, there were 8.2 million deaths caused by cancer. Cancer suffered by patients can metastasize to other body parts, such as the lungs, liver, brain, and bones. The risk of bone metastases becomes higher after cancer has spread to other body tissues, so it is necessary to do more specific bone examinations. Bone scintigraphy is one of the applications from nuclear medicine that utilizes 99mTc radioactive material as a radio-pharmaceutical for bone scanning examinations. Bone scintigraphy is done to determine the presence of metastases in the bone caused by cancer. This bone scan is an image capture method with high sensitivity but has the disadvantage of not clearly distinguishing the presence of hotspots that appear due to metastases, trauma, or other abnormalities in the bones. This research aims to create an analysis system design based on image processing scripts using MATLAB. Medical physicists and nuclear medicine technicians can later use this system to conduct quantitative analysis as a reliable predictor system that validates visual analysis of hotspots suspected of being metastasis of cancer. Based on the result, prediction of the presence of bone metastasis by quantitative analysis using digital image processing techniques can be made. With a significance level of 5%, a prediction results using the analysis system design are compatible with the results of the diagnosis obtained from the medical record data of the patient of (85.67% ± 12.71%).
Load displacement simulation of CP-Ti/UHMWPE hip implant Handoko Handoko; Suyitno Suyitno; Rini Dharmastiti; Rahadyan Magetsari
Journal of Medical Physics and Biophysics Vol 8, No 1 (2021)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

Hip implant made from titanium is special due to its lower modulus of elasticity to avoid stress shielding with the human bone. One type of load the material designed to withstand is a gradually increased compressive force which happened when the patient change his/her position from sitting to standing. This study examined the capability of a metal on polymer (MOP) implant made from commercially pure titanium (CP-Ti) and ultra-high molecular weight polyethylene (UHMWPE) loaded up to 3 kN according to ISO 14242 standard. Two CP-Ti/UHMWPE MOP models with femoral diameter of 22 mm and 32 mm were simulated with finite element. The results expressed in load displacement curves were validated with compressive load experimental tests. Both materials are capable to withstand the load. Simulation data are in good agreement with the experiments.
Analysis of the use of Extracorporeal Shock Wave Lithotripsy (ESWL) based on piezoelectric lithotripter for kidney stone Dedy Setyawan
Journal of Medical Physics and Biophysics Vol 8, No 1 (2021)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

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Abstract

Extracorporeal shock wave lithotripsy (ESWL) is a non-surgical method that can be used to break stones in the urinary tract or kidney stones by focusing the shock wave from outside the body on the location of the stone. In its application, ESWL is classified as theranostics by applying the principles of medical physics in determining the location of kidney stones and biophysics in the therapeutic process. This study aimed to analyze the use of ESWL to treat kidney stones in Dr. Saiful Anwar Malang hospital. The ESWL machine analyzed was the ESWL PIEZOLITH 3000 Triple Focus, which used the Richard Wolf piezoelectric lithotripter, with serial number GA-A 175. This analysis was carried out by combining the results of the method of literature research, observation, and interview. Based on the results of the research, the therapy with the ESWL PIEZOLITH 3000 Triple Focus uses a shock wave generated by the piezoelectric effect of piezoelectric crystals that are arranged like a mosaic in a spherical cup and are then activated simultaneously by a pulse generator. During the observation from July 18, 2017 to July 27, 2017, the smallest dimension of the treated stone was 6 x 6 mm and the largest was 10 x 15 mm. The number of shock waves used is the same with an average of 4000. The power, frequency, and membrane pressure are adjusted with the patient's body condition. Various criteria and contraindications must be met to determine a candidate for a patient to gain satisfactory results. The therapy levels include the pre-therapy procedure, therapy implementation, and post-therapy. The success rate of therapy and the rate of retreatment are determined by the type of stone, the location of the stones, and the density of the stones.

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