The Journal of Polish Society of Medical Physics

Polish Journal of Medical Physics and Engineering

Polish Jnl Med.Phys.Engin. ONL

Polish Journal of Medical Physics And Engineering

<abstract xml:lang="en"><title style='display:none'>Monte Carlo calculations of epithermal and fast neutron dose in a human head model for Boron Neutron Capture Therapy</title>Boron Neutron Capture Therapy is a very promising form of cancer therapy, consisting in irradiating a stable isotope of boron (10B) concentrated in tumor cells with a low energy neutron beam. This technique makes it possible to destroy tumor cells, leaving healthy tissues practically unaffected. In order to carry out the therapy in the proper way, the proper range of the neutron beam energy has to be chosen.In this paper we continue the earlier started calculations of the optimum energy range for BNCT, taking into account the absorbed dose from fast neutrons.</abstract>

Monte Carlo calculations of epithermal and fast neutron dose in a human head model for Boron Neutron Capture Therapy

Institute of Atomic Energy, 05-400 Otwock-Swierk

Keywords

<article-title>Monte Carlo calculations of epithermal and fast neutron dose in a human head model for Boron Neutron Capture Therapy</article-title>

<abstract xml:lang="en"><title style='display:none'>Evaluation of the potential in radiation dose reduction for full-field digital mammography</title>This study evaluates the image quality for different radiation doses in full-field digital mammography (FFDM). The potential of dose reductions is evaluated for both, the transition from screen-film mammography (SFM) to FFDM as well as within FFDM due to the optimization of exposure parameters.Exposures of a 4.5 cm breast phantom rendering different contrasts as well as bar patterns were made using a FFDM system (GE Senographe 2000D). For different kVp and mAs settings as well as different target/filter combinations chosen for the above exposures, average glandular dose (AGD), signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and modulation transfer function (MTF) were determined. To benchmark the results, relative change of AGD was evaluated against SNR, CNR and MTF. Eventually, the results were normalized to AGD's rendered by settings typically used in today's clinical routine.For standard settings (automatic mode), both FFDM and SFM deliver approximately the same AGD of about 2.2 mGy. From that, AGD reduction can be substantial in FFDM if only SNR and high contrast CNR are considered. In this case, reduction of up to 40% can be achieved in a wide kVp range if switching from the standard target/filter combination Mo/Rh to Rh/Rh. However, if low contrast CNR is to remain unchanged, dose reduction is practically impossible. The change of peak voltage and target/filter material had no influence on MTF.Assuming current CNR requirements as standards, significant dose reduction in FFDM cannot be achieved. Only by compromising low contrast CNR levels AGD of up to 40% can be saved at current standards of SNR and high contrast CNR.</abstract>

Evaluation of the potential in radiation dose reduction for full-field digital mammography

University of Applied Sciences (TFH), Berlin, Germany

King Faisal Specialist Hospital and Research Center, Jeddah, Saudi-Arabia

<article-title>Evaluation of the potential in radiation dose reduction for full-field digital mammography</article-title>

<abstract xml:lang="en"><title style='display:none'>Comparision of beam data requirements for MLC commissioning on a TPS</title>The treatment planning system (TPS) has become a key element in the radiotherapy process with the introduction of computer tomography (CT) based 3D conformal treatment planning. Commissioning of a MLC on a TPS either for conformal radiotherapy or intensity modulated radiation therapy (IMRT) requires beam data to be generated on a linear accelerator. Most of the TPS require these beam data to be generated with routine collimator jaws. However some TPS demand the data to be provided for MLC shaped fields. This prompted us to investigate whether beam data with jaws differ than that with MLC and whether the jaw based beam data would suffice for the commissioning of a MLC on a TPS.Beam data like percentage depth dose (PDD), cross beam profiles and output factors was acquired for jaws and MLC defined square fields for 6, 10 and 23 MV photon beams. Percentage depth dose and cross beam profiles were acquired with a radiation field analyzer RFA-200, CC13-S ion chambers with active volume of 0.13 cm3 and OmniPro-Accept software from Scanditronix-Wellhofer. A Medtec-TG51 water tank with Max-4000 electrometer and 0.6 cc PTW ionization chamber and a mini phantom from Standard Imaging was utilized for output measurements for millennium-120 MLC (Varian Medical Systems) and SRS diode detector (Scanditronix-Wellhofer) of 0.6 mm diameter of active area and 0.3 mm of active volume thickness for micro-MLC (BrainLab).The difference in PDD in the build-up region for millennium MLC was ±1.0% for 6 MV photons. For 10 MV photons the PDD difference was within ±4.0%. The difference in PDD for 23 MV photons ranged from 0% to 40.0%. PDD difference from build-up depth to about 28 cm was within ±1.0%. Difference in PDD crossed ±1.0% at 30 cm depth for 6 MV photons. The difference in PDD in the build-up region for mMLC was ±8.0% for 6 MV photons. For the smallest field size studied with micro-MLC i.e. 0.6 × 0.6 cm2 difference in PDD was more than ±1.0% in the build-up region and beyond a depth of 8.0 cm. The profiles for jaws and MLC agreed within the umbra region. However in the penumbra region small differences in doses were observed. The collimator scatter factor (Sc), phantom scatter factor (Sp) and output factor values for MLC were different that those for jaws.The differences in beam characteristics could have implication for intensity modulated radiation therapy and stereotactic radiosurgery in terms of dose in the build up region, exit dose, dose to the planning target volume (PTV) and organ at risk (OAR). Impact of these dosimetric differences between jaw and MLC needs to be further studied in terms of dose volume histograms for PTV and OAR and its further impact on tumor control probability (TCP) and normal tissue complication probability (NTCP).</abstract>

Comparision of beam data requirements for MLC commissioning on a TPS

L.V.Prasad Eye Institute, Hyderabad, India

Department of Physics, Anna University, Chennai, India

Department of Radiation Physics, Kidwai Memorial Institute of Oncology, Bangalore, India

Department of Radiation Oncology, Pomona Valley Hospital Medical Center, Pomona, California, USA

<article-title>Comparision of beam data requirements for MLC commissioning on a TPS</article-title>

{"article-title":"Comparision of beam data requirements for MLC commissioning on a TPS"}

<abstract xml:lang="en"><title style='display:none'>An analysis of calibration coefficients measured in water and in air for Farmer-type cylindrical ionization chambers</title>A comparison of calibration coefficients of Farmer-type cylindrical ionization chambers calibrated in a Co-60 beam according to the IAEA Reports 277 and 398 formalisms.91 calibration coefficients measured in air and in water.The <italic>398ND, W/277ND, W</italic> ratios were calculated, taking into account the wall material of the chambers. The correlation between <italic>398ND, W</italic> and <italic>NK, ND, air277ND, W</italic> was made and the equations of the regression straight lines were determined.Calibration coefficients, determined according to the IAEA Report 398, are higher by about 1% than those determined according to the IAEA Report 277, and they depend slightly on the wall material of the chamber.The introduction of the IAEA dosimetry Report 398 resulted in an increase in the doses delivered to patients by about 1% as compared with the period of application of Report 277. The regression equations may assure increased accuracy in retrospective comparative calculation of doses according to both reports as compared with the correction based on mean percent values.</abstract>

An analysis of calibration coefficients measured in water and in air for Farmer-type cylindrical ionization chambers

Department of Medical Physics, Center of Oncology, 02-781 Warsaw, Roentgena 5, Poland

<article-title>An analysis of calibration coefficients measured in water and in air for Farmer-type cylindrical ionization chambers</article-title>

<abstract xml:lang="en"><title style='display:none'>IEC/EN standards relating to diagnostic radiology equipment, and testing according to these standards</title>The paper gives an outlook of history, present and future of international (IEC) and European (EN) standards relating to diagnostic radiology equipment. These standards may be safety, quality assurance or performance standards; all of them include testing methods. Elaboration and publication of a new series of safety standards is in progress.Acceptance and conformance testing activity of the accredited Radiohygiene Department Laboratory of NRIRR according to these standards is reported.</abstract>

IEC/EN standards relating to diagnostic radiology equipment, and testing according to these standards

National Research Institute for Radiobiology and Radiohygiene (NRIRR), Budapest, Hungary

IEC & CENELEC TC62 Hungarian National Committee, Budapest, Hungary

<article-title>IEC/EN standards relating to diagnostic radiology equipment, and testing according to these standards</article-title>

Polish Journal of Medical Physics and Engineering is covered by the following services: <ul> <li> Arianta </li> <li> Astrophysics Data System (ADS) </li> <li> Baidu Scholar </li> <li> Cabell's Whitelist </li> <li> Case </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> EBSCO </li> <li> Embase </li> <li> Engineering Village </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Inspec </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> Meta </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> Polish Medical Bibliography/Polish Medical Library </li> <li> Polish Scientific Journals Database </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> Reaxys </li> <li> SCImago (SJR) </li> <li> SCOPUS </li> <li> Semantic Scholar </li> <li> Sherpa/RoMEO </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> Web of Science - Emerging Sources Citation Index </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

Polish Journal of Medical Physics and Engineering ist in den folgenden Services indiziert: <ul> <li> Arianta </li> <li> Astrophysics Data System (ADS) </li> <li> Baidu Scholar </li> <li> Cabell's Whitelist </li> <li> Case </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> EBSCO </li> <li> Embase </li> <li> Engineering Village </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Inspec </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> Meta </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> Polish Medical Bibliography/Polish Medical Library </li> <li> Polish Scientific Journals Database </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> Reaxys </li> <li> SCImago (SJR) </li> <li> SCOPUS </li> <li> Semantic Scholar </li> <li> Sherpa/RoMEO </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> Web of Science - Emerging Sources Citation Index </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

<DIV align=left> Polish Journal of Medical Physics and Engineering (PJMPE) is an official publication of the Polish Society of Medical Physics (established in 1965, member of IOMP and EFOMP). The Journal has been published since 1995 and is a direct successor of Postępy Fizyki Medycznej (Advances in Medical Physics) which was published in Polish from 1966 to 1992. Members of the Editorial Board represent leading institutes and universities in Poland. The Journal is on the list of the scientific journals published by the Polish Ministry of Science and Higher Education and is indexed by several services, including Scopus and Web of Science - Emerging Sources Citation Index. The Journal publishes original contributions in medical physics and biomedical engineering, involving new methods and techniques, clinical applications, technological developments, research studies, and experimental science. Most of the publications concern the following subject categories: radiotherapy (including brachytherapy), radiology (X-ray, magnetic resonance, and ultrasound imaging), nuclear medicine (diagnostics and therapeutic applications), biosignals, biomedical engineering, and radiation protection (in medicine). We accept manuscripts from all over the world and particularly invite young researchers from Poland to publish their first papers in the Journal. PJMPE is a peer-reviewed, open-access scientific journal. The issues are published quarterly (March, June, September, December) in electronic form on the Journal’s website (ISSN 1898-0309). Each manuscript has a DOI number assigned (digital object identifier). A printed version of the Journal used to be available in the past (ISSN 1425-4689). All manuscripts published since 2007 are freely available to all readers as PDF files on Journal’s website (older issues have not been digitized). Rejection rate: <UL> <LI>70% </LI></UL> Archiving Sciendo archives the contents of this journal in <A href="https://www.portico.org/">Portico</A> - digital long-term preservation service of scholarly books, journals and collections. Plagiarism Policy The editorial board is participating in a growing community of <A href="https://www.crossref.org/services/similarity-check/">Similarity Check System's</A> users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. </DIV>

Editor-in-Chief Witold Skrzyński, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland Associate Editors Anna Budzyńska, Military Institute of Medicine, Warsaw, Poland Adam Konefał, University of Silesia, Katowice, Poland Renata Kopeć, Institute of Nuclear Physics Polish Academy of Sciences (IFJ PAN), Kraków, Poland Paweł Kukołowicz, (past Editor-in-Chief) Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland Janusz Winiecki, prof. Franciszek Lukaszczyk Memorial Oncology Center, Bydgoszcz, Poland; Collegium Medicum Nicholas Copernicus University, Bydgoszcz, Poland Piotr Tulik, Warsaw University of Technology, Warsaw, Poland Paweł Wołowiec, Holy Cross Cancer Center, Kielce, Poland; Central Office of Measures, Warsaw, Poland Wojciech Zbijewski, Johns Hopkins University, Baltimore, MD, USA Scientific Board Janusz Braziewicz, Jan Kochanowski University (JKU), Kielce, Poland Wojciech Bulski, Maria Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland Božidar Casar, Institute of Oncology, Ljubljana, Slovenia Maria Czerminska, Harvard Medical School, Boston, Massachusetts, USA Yuri Dekhtyar, Riga Technical University, Riga, Latvia Romuald Gajewski, Westmead Hospital, Sydney, Australia Eduard Gershkevitsh, North Estonia Medical Centre, Tallinn, Estonia Victor Gurvich, Fort Belvoir Community Hospital, Fort Belvoir, Virginia, USA Andrzej Niemierko, Massachusetts General Hospital, Boston, Massachusetts, USA Paweł Olko, Institute of Nuclear Physics of the Polish Academy of Sciences (IFJ PAN), Kraków, Poland Valerii Orel, National Cancer Institute (NCI), Kiev, Ukraine Tadeusz Pałko, Warsaw University of Technology, Warsaw, Poland Tomasz Piotrowski, Greater Poland Cancer Centre, Poznań, Poland Anna Płachcińska, Medical University of Łódź, Łódź, Poland Michael Waligórski, Institute of Nuclear Physics of the Polish Academy of Sciences (IFJ PAN), Poland Ewa Zalewska, Nałęcz Institute of Biocybernetics and Biomedical Engineering PAS, Warsaw, Poland Krzysztof Zaremba, Warsaw University of Technology, Warsaw, Poland Contact <A href="mailto:editor@pjmpe.edu.pl">editor@pjmpe.edu.pl</A> Editor-in-Chief : Witold Skrzyński <A href="mailto:witold.skrzynski@pib-nio.pl">witold.skrzynski@pib-nio.pl</A> Department of Medical Physics Maria Skłodowska-Curie National Research Institute of Oncology Roentgena 5, 02-781 Warszawa, Poland Publisher De Gruyter Poland Bogumiła Zuga 32A Str. 01-811 Warsaw, Poland T: +48 22 701 50 15

All submissions to the Polish Journal of Medical Physics and Engineering should be made using <A href="https://www.editorialsystem.com/pjmpe/">Editorial System</A>. Please follow guidelines given in <A href="https://www.pjmpe.edu.pl/Information_for_Authors_PJMPE.pdf">Information for Authors</A>. All manuscripts are published under the CC BY-NC-ND license. In short, authors retain copyright to their work. Non-commercial use and distribution of the manuscript are permitted, provided the author and the journal are properly credited. Article publication fee applies to articles submitted after 31 March 2022. The payment is made after acceptance of the article for publication. Members of the Polish Society of Medical Physics are exempt from fees. Detailed information is given in <A href="https://www.pjmpe.edu.pl/Information_for_Authors_PJMPE.pdf">Information for Authors</A>. Open Access Statement The journal is an Open Access journal that allows a free unlimited access to all its contents without any restrictions upon publication to all users. <A href="https://www.pjmpe.edu.pl/Publication_agreement_PJMPE.pdf">Open Access License</A>

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Polish Journal of Medical Physics and Engineering

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Volumen 14 (2008): Heft 2 (June 2008)

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