Relevant bibliographies by topics / Dosimetric performance

Academic literature on the topic 'Dosimetric performance'

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Published: 9 March 2023
Last updated: 10 March 2023

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Journal articles on the topic "Dosimetric performance"

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de Almeida, Shirlane Barbosa, Daniel Villani, Roberto Kenji Sakuraba, Ana Carolina Pires de Rezende, Silas Cardoso Santos, and Letícia Lucente Campos. "Dosimetric evaluation employing TL and OSL techniques with different luminescent materials for clinical evaluation of extremity doses using electron beams applied to Total-Irradiation-of-Skin treatments." International Journal of Modern Physics: Conference Series 48 (January 2018): 1860110. http://dx.doi.org/10.1142/s2010194518601102.

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Total-skin electron beam (TSEB) irradiation is used to deliver a homogeneous dose distribution over the entire skin surface of a patient. TSEB dosimetry is quite complex as to the evaluation and measurement of absorbed dosage in the cutaneous region. This paper evaluates the performance of different dosimetric materials, using TL and OSL dosimetry, in the extremity-dose assessment of TSEB treatments using the six-dual-field technique and an anthropomorphic phantom. Dosimeters were selected with repeatability better than [Formula: see text] and calibrated to 6-MeV electron-beam dosimetry. Measurements were conducted in the abdominal region as a reference point and on the extremities. Results show expected deviations ranging up to [Formula: see text] in the dose received in the extremities and good results in dose assessment using all dosimetric materials tested.
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Wang, Ningyu, Fengjie Cui, Shaoxian Gu, Chuou Yin, Shengyuan Zhang, Jinyou Hu, Yunzhu Cai, Zhangwen Wu, Jun Wang, and Chengjun Gou. "The Study of Dosimetric Characteristics of the XHA600D Medical Linear Accelerator Based on a Monte Carlo Code." Science and Technology of Nuclear Installations 2022 (September 29, 2022): 1–15. http://dx.doi.org/10.1155/2022/7712498.

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By investigating the influence of initial electrons on dosimetric characteristics, reasonable incident electron parameters for the nominal 6 MV photon beam of the XHA600D accelerator are finally established, i.e., a 6 MeV monoenergetic electron beam with a radial intensity FWHM of 2.5 mm and an angular divergency of 0.15°. Based on reasonable initial parameters, Percentage Depth Doses (PDDs), Off-Axis Ratios (OARs), total scatter factors, beam qualities, and penumbra widths of both flatteningfilter (FF) and flattening-filter-free (FFF) beams for fields ranging from 4 × 4 to 30 × 30 cm2 are simulated systematically with EGSnrc codes. Not only the simulated dosimetric properties are in excellent agreement with the measurements, but also the dosimetric discrepancies between FF and FFF beams are consistent with the laws of previous studies on other accelerators. Therefore, reasonable incident electron parameters are able to accurately verify the performance of the XHA600D accelerator and can be used for further dosimetry research.
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Hajek, M., M. Sugiyama, G. Kolb, D. M. Tucker, and M. Pinak. "CHARACTERISATION OF RADIOPHOTOLUMINESCENCE DOSIMETRY SYSTEM FOR INDIVIDUAL MONITORING." Radiation Protection Dosimetry 190, no. 1 (June 2020): 66–70. http://dx.doi.org/10.1093/rpd/ncaa077.

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Abstract Performance evaluation is typically assessed as part of the approval procedure to verify that a dosimetry system fulfils specified national or international type-test requirements under representative exposure conditions that are expected to mimic workplace fields from the radiological activities being monitored. The International Atomic Energy Agency Radiation Safety Technical Services Laboratory has recently implemented an integrated radiophotoluminescence (RPL) personal dosimetry system developed by Chiyoda Technol Corporation. This paper reports on the successful verification of dosimetric performance properties of the RPL dosimetry system to IEC 62387:2020, in which the badges were exposed to a range of radiation energies and angles of incidence as well as other influence parameters. Characteristics under test included the coefficient of variation, non-linearity of response due to dose dependence as well as the energy and angular response to photon and beta radiation.
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Morelli, B., E. Vilela, and E. Fantuzzi. "Dosimetric Performance of the Fast Neutron Dosemeter for ENEA Personal Dosimetry Service." Radiation Protection Dosimetry 85, no. 1 (September 1, 1999): 105–8. http://dx.doi.org/10.1093/oxfordjournals.rpd.a032810.

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Akhavanallaf, Azadeh, Hadi Fayad, Yazdan Salimi, Antar Aly, Hassan Kharita, Huda Al Naemi, and Habib Zaidi. "An update on computational anthropomorphic anatomical models." DIGITAL HEALTH 8 (January 2022): 205520762211119. http://dx.doi.org/10.1177/20552076221111941.

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The prevalent availability of high-performance computing coupled with validated computerized simulation platforms as open-source packages have motivated progress in the development of realistic anthropomorphic computational models of the human anatomy. The main application of these advanced tools focused on imaging physics and computational internal/external radiation dosimetry research. This paper provides an updated review of state-of-the-art developments and recent advances in the design of sophisticated computational models of the human anatomy with a particular focus on their use in radiation dosimetry calculations. The consolidation of flexible and realistic computational models with biological data and accurate radiation transport modeling tools enables the capability to produce dosimetric data reflecting actual setup in clinical setting. These simulation methodologies and results are helpful resources for the medical physics and medical imaging communities and are expected to impact the fields of medical imaging and dosimetry calculations profoundly.
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Saminathan, Sathiyan, Henry Finlay Godson, Retna Ponmalar, Ravikumar Manickam, James Mazarello, and Rahul Fernandes. "Dosimetric Performance of Newly Developed Farmer-Type Ionization Chamber in Radiotherapy Practice." Technology in Cancer Research & Treatment 15, no. 6 (July 9, 2016): NP113—NP120. http://dx.doi.org/10.1177/1533034615621635.

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Dose measurement with ionization chamber is essential to deliver accurate dose to the tumor in radiotherapy. The cylindrical Farmer-type ionization chamber is recommended by various dosimetry protocols for dose measurement of radiotherapy beams. The air-equivalent graphite wall Farmer-type ionization chamber (FAR 65 GB) of active volume 0.65 cm3 with aluminum as the central electrode material was fabricated. Various dosimetric parameters were studied for the newly developed ionization chamber in cobalt-60, 6 and 18 MV photon beams. The preirradiation and postirradiation leakage of the chamber was within 0.08%. The long-term stability and the stem effect of the chamber were within 0.07% and 0.3%, respectively. The sensitivity of the ionization chamber was found to be 22.15 nC/Gy. The chamber shows linear response with dose for cobalt-60, 6 and 18 MV photon beams. The ion recombination correction factor increases with increase in bias voltage. For all energies and field sizes, the polarity correction factor is almost closer to unity. The ion recombination and polarity correction measurements show that the polarizing potential and polarity recommended during the calibration of ionization chamber should be used for routine measurement to avoid the uncertainty. The chamber response is independent of dose rate and energy. The chamber is cost-effective and shows precise and reproducible response. The study carried out confirms that the newly fabricated ion chamber can be used in the measurement of absolute dose for high-energy photon beams.
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Russo, Serenella, Silvia Bettarini, Barbara Grilli Leonulli, Marco Esposito, Paolo Alpi, Alessandro Ghirelli, Raffaella Barca, et al. "Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector." Applied Sciences 12, no. 2 (January 8, 2022): 600. http://dx.doi.org/10.3390/app12020600.

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High-energy small electron beams, generated by linear accelerators, are used for radiotherapy of localized superficial tumours. The aim of the present study is to assess the dosimetric performance under small radiation therapy electron beams of the novel PTW microSilicon detector compared to other available dosimeters. Relative dose measurements of circular fields with 20, 30, 40, and 50 mm aperture diameters were performed for electron beams generated by an Elekta Synergy linac, with energy between 4 and 12 MeV. Percentage depth dose, transverse profiles, and output factors, normalized to the 10 × 10 cm2 reference field, were measured. All dosimetric data were collected in a PTW MP3 motorized water phantom, at SSD of 100 cm, by using the novel PTW microSilicon detector. The PTW diode E and the PTW microDiamond were also used in all beam apertures for benchmarking. Data for the biggest field size were also measured by the PTW Advanced Markus ionization chamber. Measurements performed by the microSilicon are in good agreement with the reference values for all the tubular applicators and beam energies within the stated uncertainties. This confirms the reliability of the microSilicon detector for relative dosimetry of small radiation therapy electron beams collimated by circular applicators.
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Thompson, Reid F. "RadOnc: An R Package for Analysis of Dose-Volume Histogram and Three-Dimensional Structural Data." Journal of Radiation Oncology Informatics 6, no. 1 (October 2, 2017): 98–110. http://dx.doi.org/10.5166/jroi-6-1-25.

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Purpose/Objectives: Dose volume histogram (DVH) data are generally analyzed within the context of a treatment planning system (TPS) on a per-patient basis, with evaluation of single-plan or comparative dose distributions. However, TPS software generally cannot perform simultaneous comparative dosimetry among a cohort of patients. The same limitations apply to parallel analyses of three-dimensional structures and other clinical data. Materials/Methods: We developed a suite of tools ("RadOnc" package) using R statistical software to better compare pooled DVH data and empower analysis of structure data and clinical correlates. Representative patient data were identified among previously analyzed adult (n=13) and pediatric (n=1) cohorts and these data were used to demonstrate the performance and functionality of the RadOnc package. Results: The RadOnc package facilitates DVH data import from the TPS and includes automated methods for DVH visualization, dosimetric parameter extraction, statistical comparison among multiple DVHs, basic three-dimensional structural processing, and visualization tools to enable customizable production of publication-quality images. Conclusions: The RadOnc package provides a potent clinical research tool with the ability to integrate robust statistical software and dosimetric data from cohorts of patients. It is made freely available to the community for their current use and remains under active development.
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Garzón, W. J., H. Khoury, S. A. M. Ovalle, and R. B. Medeiros. "PERFORMANCE OF THE INSTADOSETM DOSEMETER FOR INTERVENTIONAL RADIOLOGY AND CARDIOLOGY APPLICATION." Radiation Protection Dosimetry 183, no. 4 (January 10, 2018): 522–28. http://dx.doi.org/10.1093/rpd/ncy172.

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Abstract The aim of this article was to verify the performance of the Mirion InstadoseTM dosemeter under clinical conditions and to compare its response in typical X-ray fields used during interventional and cardiology procedures with the TLD-100, usually used for radiation dosimetry. It was also objective of this study to verify the feasibility of using the InstadoseTM dosemeter response at the chest level for estimation of occupational eye lens dose in cardiology and interventional radiology. Initially the response of the dosemeter was tested using continuous X-ray beams and the results showed that the Instadose dosemeter present a satisfactory behavior of the most important dosimetric properties based on the tests as described in the IEC 62387 standard. The measurements performed in clinical conditions showed that the InstadoseTM dosemeter response was comparable to that of TL dosemeters used in interventional radiology and cardiology procedures and there is a correlation between the eye lens doses and the chest doses measured with the InstadoseTM. Based on the results obtained, we recommend the use of the InstadoseTM dosemeter for purposes of occupational whole-body monitoring of medical staff in interventional radiology and cardiology procedures.
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Alshanqity, Mukhtar, and Andrew Nisbet. "Dosimetric Performance of A-Si Electronic Portal Imaging Devices." International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 05, no. 02 (2016): 162–75. http://dx.doi.org/10.4236/ijmpcero.2016.52018.

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Dissertations / Theses on the topic "Dosimetric performance"

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PIAI, ANNA. "Diagnostic performance and organ dose evaluation in radiological diagnosis and follow-up of Ollier enchondromatosis pediatric patients: a phantom study." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/883102.

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The European Council Directive 2013/59/Euratom included pediatric exposure in the special practices for which appropriate medical radiological equipment and practical techniques have to be ensured. Children are generally more sensitive to X-rays than adults, mainly due to rapid cell growth and replication, and a longer lifespan after exposure. Hence, the optimization of protection is a priority factor and it shall involve all the practical aspects of medical radiological procedures, from the selection of equipment to quality assurance and the assessment of patient doses. These concepts are strongly endorsed by health care organizations dedicated to providing safe and high-quality pediatric imaging, particularly in modalities involving higher radiation doses, such as computed tomography and fluoroscopy. IRCCS Istituto Ortopedico Galeazzi is a reference center for the diagnosis and treatment of pediatric orthopedic and traumatological diseases, including orthopedic tumors. Ollier disease is a rare skeletal disorder characterized by the presence of multiple enchondromas, which are intraosseous, usually benign, cartilage tumors. Although the enchondromas start out as benign, they may become malignant, so children affected by the disease undergo multiple radiographs over time. Special effort is thus required to reduce the risk of radiation-induced cancers, and the benefit provided by radiological procedures has to be properly balanced with the health risk associated with ionizing radiation. The principal aim of this study was to evaluate the applicability of a relatively novel low-dose technique based on a slot scanning technology (EOS imaging system), for the diagnosis and follow-up of Ollier disease. For this purpose, a 5-year-old anthropomorphic phantom was specifically purchased to evaluate the diagnostic and dosimetric performances of the system. Digital radiography (DR) and computed tomography (CT), the current gold standards for diagnosis and monitoring, were evaluated for comparison. Ollier enchondromas were simulated with homemade bone structures stuck on the phantom, which was then imaged with DR, CT, and the EOS system at three different scanning speeds. To assess the diagnostic power of the imaging system, non-expert observers and experienced radiologists measured the inserts dimensions and compared them with those derived from CT and DR. Interobserver and intermodality reproducibilities were evaluated through Bland-Altman analysis. Furthermore, the accuracy in the size estimation was investigated by comparing the measured dimensions with the real ones. Dosimetric evaluations were performed for each imaging technique through Monte Carlo (MC) simulations and in-phantom measurements with thermoluminescent dosimeters (TLDs). The validation of MC simulations with TL dosimetry was necessary for the EOS system as no reference was found in the literature. Three speed levels of the EOS X-ray tube, and two DR acquisition protocols, respectively suited for diagnosis and follow-up, were investigated. The measured organ doses were used to calculate effective dose according to the ICRP 103 recommendations. Risks of radiation-induced cancers were estimated in the form of Lifetime Attributable Risk (LAR). The EOS system performed similarly to DR and CT in both detection and measurement of enchondromas-like inserts. Excellent intermodality reliability and interobserver reproducibility were obtained for each imaging technique. EOS fast protocol provided a reduction of effective and organ doses with respect to DR acquisitions performed with the diagnostic protocol. When the DR protocol optimized for follow-up was considered, instead, no significant dose sparing was observed, neither in organ doses nor in effective dose. CT doses were considerably higher than doses of EOS and DR, regardless of the acquisition protocol or speed level. Comparable LARs were observed for EOS acquisitions performed with the fast protocol and DR examinations with the follow-up protocol. DR diagnosis protocol was found to be equivalent, in terms of radiological risk, to the EOS intermediate speed level. The risk associated with CT examinations was two orders of magnitude higher than of the other techniques. This work showed that the EOS system has the same diagnostic capability as DR and CT to detect and measure enchondromas-like inserts in a pediatric phantom, but delivering lower doses. Although no dose reduction was found with respect to DR follow-up protocol, EOS fast protocol still provides low doses, and the two techniques were found to be equivalent in terms of LAR. Thus, it may be considered a valid solution for both the diagnosis and followup of patients with Ollier disease or other bone pathologies, allowing easier and faster exams, which is a crucial aspect in pediatric applications.
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Toyokawa, H., M. Yoshizawa, A. Uritani, C. Mori, N. Takeda, and K. Kudo. "Performance of a Spherical Neutron Counter for Spectroscopy and Dosimetry." IEEE, 1997. http://hdl.handle.net/2237/6943.

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Sadaka, Samir. "Etude theorique et experimentale d'un dosimetre de neutrons rapides." Toulouse 3, 1986. http://www.theses.fr/1986TOU30032.

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Etude theorique de la reponse d'un dosimetre neutronique compose d'un convertisseur fortement hydrogene le(ch::(2))n et d'un detenteur solide visuel de trace le cr39. Etude de la reponse theorique en fonction de l'energie et de l'incidence du flux neutronique. Comparaison avec les resultats experimentaux
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Pollitt, David Frederic. "Performance evaluation of a second generation metaphase finder for chromosome-based radiation dosimetry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/MQ32550.pdf.

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Sookpeng, Supawitoo. "Investigation of CT dosimetry techniques for use in optimisation of Automatic Tube Current Modulation (ATCM) performance." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5252/.

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The PhD project aimed to develop methodologies for optimisation of automatic tube current modulation (ATCM) performance for the four most important computed tomography (CT) scanner manufacturers (Toshiba, GE, Philips and Siemens scanners). Since the human body to which ATCM response is elliptical in shape, the project started with an investigation of differences between dosimetry in cylindrical and elliptical phantoms. The ATCM systems modulate the tube current in both the x-y plane and z-axis, therefore phantoms made from multiple sections of different size ellipses were designed for quality control of the ATCM performances and evaluated by comparing with a conical phantom developed by imaging performance and assessment of CT (ImPACT) evaluation centre, UK. In order to link the project into patient dose optimisation, CT scanners in which patient doses were high were identified and the link with patient size evaluated. Since the large variations in patient dose may be influenced by scan parameters, the phantom developed was used to carry out measurements on CT scanners and investigate some factors and attribute reasons for the high doses. Finally changes in CT scanner protocols were recommended. The results from the elliptical phantom showed that the doses in the centre and anterior were larger than in the cylinder, while doses in the lateral periphery were similar. Differences in ratios of doses between the two phantoms for different CT scanners are linked to the beam profiles produced by the individual bow tie filters. Phantoms made from multi elliptical sections demonstrated similar trends for the Philips and Siemens ATCM systems. However, the abrupt changes in attenuation provoked the ATCMs to increase tube current aggressively with the GE and Toshiba systems. A phantom like a wedding cake with broader sections and smaller differences in attenuation circumvented these effects. The volume weighted CT dose index (CTDIvol) increased significantly with patient size for Toshiba and GE scanners whilst the changes for Siemens and Philips scanners were less marked. However, the use of Philips the D-DOM ATCM option led to a significant increase in patient dose. The reconstruction filter and image thickness are major factors influencing patient dose for the Toshiba CT scanner.
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Baskerville-Abraham, Irene M. Swenberg James A. "Molecular dosimetry of 1,2 guanine-guanine intrastrand cross links of cisplatin by ultra performance liquid chromatography tandem mass spectrometry." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2451.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2009.
Title from electronic title page (viewed Sep. 3, 2009). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy of the Curriculum in Toxicology." Discipline: Toxicology; Department/School: Medicine.
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Rowshan, Farzad Pejman. "Improvement of EPID-based techniques for dosimetry and investigation of linac mechanical performance in advanced radiotherapy." Thesis, 2012. http://hdl.handle.net/1959.13/935753.

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Research Doctorate - Doctor of Philosophy (PhD)
Advances in radiotherapy have increased the complexity of treatment delivery techniques. The complexity of plans, with dynamic variation of field shape, gantry speed and dose rate require highly accurate techniques for quality assurance of the treatment machines and dosimetric verification of the treatment plans. There has been a growing interest on the application of electronic portal imaging devices (EPIDs) for dosimetry applications and quality assurance testing of linear accelerators (linacs). The ultimate aim of this thesis is to develop methods to ensure more accurate treatment deliveries using EPID-based techniques. The project is divided into two parts. The first part is based on improvement of the accuracy of EPID dosimetry with Varian systems by either accounting for, or reduction of, the effect of backscattered radiation from the treatment room walls and the EPID support arm. The effect of backscatter from the treatment room walls was quantified for the first time using a number of measurement setups and comparisons with measurements in the presence of an independent portable wall. The Varian support arm backscatter was accounted for or reduced by three methods: (a) application of an experimentally derived backscatter kernel into an existing EPID dose prediction model, (b) insertion of lead sheets to reduce the non-uniform backscatter, and (c) insertion of a thicker piece of lead over the arm area and considering it as an arm component which could effectively reduce the backscatter effect. Application of the backscatter kernel measured with this lead shielded arm into the model was the most effective method to improve the accuracy of EPID dosimetry predictions. In the second part of the project, EPID-based measurement methods were used and new algorithms were developed for faster, easier, more robust, more accurate quantitative techniques for characterization of the linac components than existing methods. The results could be used for improvement of EPID dosimetry measurements and/or be included in the linac quality assurance program. The study includes: determination of the mechanical isocentre position with a level of accuracy suitable for stereotactic treatments; determination of the sag in EPID, gantry, jaws and MLC systems during arc deliveries; determination of gantry angle during rotation; and finally, a comprehensive investigation of MLC leaf positioning and dynamic performance in static and arc delivery modes. The proposed methods have been tested and are applicable for routine quality assurance of the linear accelerators used for advanced treatment techniques with all linacs, independent of their make and model.
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Books on the topic "Dosimetric performance"

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R, Harty, McDonald J. C. 1942-, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and Pacific Northwest Laboratory, eds. Performance testing of extremity dosimeters: Pilot test. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1993.

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L, Welch, Wiblin C, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and Advanced Systems Technology Inc, eds. Performance of portable radiation survey instruments. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1993.

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L, Welch, Wiblin C, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and Advanced Systems Technology Inc, eds. Performance of portable radiation survey instruments. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1993.

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Harty, R. Performance testing of extremity dosimeters. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1987.

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Harty, R. Performance testing of extremity dosimeters. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1987.

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Harty, R. Performance testing of extremity dosimeters, study 2. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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D, Reece W., Hooker C. D, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and Pacific Northwest Laboratory, eds. Performance testing of extremity dosimeters, study 2. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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P, Chougaonkar M., Bhabha Atomic Research Centre, and India Atomic Energy Commission, eds. Performance characterstics of CaSO₄: DY based indigenous thermoluminescent dosimeters for environmental radiation monitoring. Mumbai: Bhabha Atomic Research Centre, 2008.

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C, Humphreys Jimmy, and National Institute of Standards and Technology (U.S.)., eds. Criteria for characterization and performance of a high-dose radiation dosimetry calibration laboratory. Gaithersburg, MD: U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology, 1996.

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C, Humphreys Jimmy, and National Institute of Standards and Technology (U.S.), eds. Criteria for characterization and performance of a high-dose radiation dosimetry calibration laboratory. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1996.

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Book chapters on the topic "Dosimetric performance"

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Saraf, S. K., J. Kalef-Ezra, R. G. Fairchild, B. H. Laster, S. Fiarman, and E. Ramsey. "Epithermal Beam Development at the BMRR: Dosimetric Evaluation." In Neutron Beam Design, Development, and Performance for Neutron Capture Therapy, 307–16. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5802-2_23.

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Kapsch, R. P., and A. Krauss. "On the performance of monitor chambers to measure the output of medical linear accelerators for high-precision dosimetric investigations." In IFMBE Proceedings, 85–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03474-9_25.

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Thomas, A. F., M. R. Brown, and A. Dolan. "A Comprehensive Approach to the Problems of Uncertainty Analysis in the Assessment of Irradiated Materials Performance." In Reactor Dosimetry, 983–95. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-010-9726-0_48.

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Thomas, A. F., M. R. Brown, and A. Dolan. "‘A Comprehensive Approach to the Problems of Uncertainty Analysis in the Assessment of Irradiated Materials Performance’." In Reactor Dosimetry, 983–95. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5378-9_100.

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Lebedeva, Elena E., Yury V. Naboishchikov, Anatoly I. Tellin, and Dimitry K. Ryazanov. "Experiment-Based and Numerical Estimation Analysis of Neutron Field Performance in the In-Core Irradiation Positions and in the Lateral Blanket of the BOR-60 Reactor." In Reactor Dosimetry: 16th International Symposium, 48–62. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2018. http://dx.doi.org/10.1520/stp160820170071.

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Seligy, V. L., G. R. Douglas, J. M. Rancourt, A. F. Tayabali, I. Otvos, G. Frankenhuyzen, J. Dugal, G. Rousseau, and A. G. Szabo. "Comparative Performance of Conventional and Molecular Dosimetry Methods in Environmental Biomonitoring." In Rapid Methods for Analysis of Biological Materials in the Environment, 279–97. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9534-6_22.

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Zamenhof, R. G., S. D. Clement, O. K. Harling, J. F. Brenner, D. E. Wazer, H. Madoc-Jones, and J. C. Yanch. "Monte Carlo Based Dosimetry and Treatment Planning for Neutron Capture Therapy of Brain Tumors." In Neutron Beam Design, Development, and Performance for Neutron Capture Therapy, 283–305. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5802-2_22.

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Brummelman, Pauline, Margriet GA Sattler, Alfons CM van den Bergh, Linda C. Meiners, Robin PF Dullaart, Gerrit van den Berg, Gerbrand J. Izaks, et al. "Cognitive Performance and the Hippocampus in Patients with Postoperative Pituitary Radiotherapy: A Detailed Dosimetric Study." In CLINICAL - General Aspects of Pituitary Diseases, P2–380—P2–380. The Endocrine Society, 2011. http://dx.doi.org/10.1210/endo-meetings.2011.part2.p37.p2-380.

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Conference papers on the topic "Dosimetric performance"

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Holmes-Siedle, Andrew, Federico Ravotti, and Maurice Glaser. "The Dosimetric Performance of RADFETs in Radiation Test Beams." In 2007 IEEE Radiation Effects Data Workshop. IEEE, 2007. http://dx.doi.org/10.1109/redw.2007.4342539.

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Alharbi, Majed, Nahuel Facundo Martínez Clemente, and Mark J. Foley. "Dosimetric performance of an inorganic optical fibre dosimeter when temporally separating Cherenkov radiation." In Optical Sensing and Detection VII, edited by Francis Berghmans and Ioanna Zergioti. SPIE, 2022. http://dx.doi.org/10.1117/12.2619329.

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Petkevich, M. N., I. N. Chirkova, and T. S. Chikova. "OVERVIEW OF MODERN METHODS OF ABSOLUTE DOSIMETRY." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-2-233-236.

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Quality control of the characteristics of linear accelerators for radiation therapy is a key element of radiation protection of patients. It includes a system of organized events, technical means and technological procedures to maintain the optimal level of equipment performance, as well as treatment regimens. The review of modern methods of absolute dosimetry is carried out. It is shown that the most effective devices for absolute dosimetry are tissueequivalent water phantoms. The water phantoms Blue Phantom SMARTSCAN and Blue Phantom Compact used in the State Institution «N. N. Alexandrov National Cancer Center of Belarus» are analyzed. It is shown that the use of absolute dosimetry on equipment such as water phantoms makes it possible to solve the problem of developing a test system for a radiological complex based on a linear accelerator to the greatest extent.
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Pomerleau, Natalie, and Lothar D. Lilge. "Multisensory fiber optic probes for PDT dosimetry: construction, performance, and error analysis." In International Symposium on Biomedical Optics, edited by Thomas J. Dougherty. SPIE, 2002. http://dx.doi.org/10.1117/12.469334.

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Taebi, Amirtahà, Catherine T. Vu, and Emilie Roncali. "Prediction of Blood Flow Distribution in Liver Radioembolization Using Convolutional Neural Networks." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24475.

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Abstract We have developed a new dosimetry approach, called CFDose, for liver cancer radioembolization based on computational fluid dynamics (CFD) simulation in the hepatic arterial tree. Although CFDose overcomes some of the limitations of the current dosimetry methods such as the unrealistic assumption of homogeneous distribution of yttrium-90 in the liver, it suffers from the expensive computational cost of CFD simulations. To accelerate CFDose, we introduce a deep learning model to predict the blood flow distribution between the liver segments in a patient with hepatocellular carcinoma. The model was trained with the results of CFD simulations under different outlet boundary conditions. The model consisted of convolutional, average pooling and transposed convolution layers. A regression layer with a mean-squared-error loss function was utilized at the network output to estimate the arterial outlet blood flow. The mean-squared error and prediction accuracy were calculated to measure model performance. Results showed that the average difference between the CFD results and predicted flow data was less than 2.45% for all the samples in the test dataset. The proposed model thus estimated the blood flow distribution with high accuracy significantly faster than a CFD simulation. The network output can be used to estimate the yttrium-90 dose distribution in the liver in future studies.
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Tale, Aija, Irena Plavina, A. Kalnins, and Anatoli I. Popov. "Performance data of optically stimulable irradiated materials (doped alkali halides) oriented for imaging and dosimetry purposes." In International Conference on Advanced Optical Materials and Devices, edited by Andris Krumins, Donats K. Millers, Andris R. Sternberg, and Janis Spigulis. SPIE, 1997. http://dx.doi.org/10.1117/12.266512.

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Liu, Yanping, Zhaoyang Chen, Yanwei Fan, Weizhen Ba, and Shilie Pan. "A Novel Radiation Dosimetry Based on Optically Stimulated Luminescence." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48023.

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A new generation of Alkaline earth sulfides (MgS, CaS, and BaS) doped with rare-earth ions have been identified by the University of Montpellier as the very high sensitivity of these phosphors, the short time constant of the luminescence and the perfectly separated spectra enable many applications in real time and online dosimetry. The online detecting technology of optically stimulated luminescent (OSL) radiation dosimeter main make use of the OSL characteristics of doping the alkaline-earth metal sulphides, makes the material into the thin films for storing energy from Ionizing radiation, the excitation light through optical fibers reached the where under radiation-field, with a sensitive detection device to read out the radiation dose from storing the OSL material, obtains a novel technology of radiation dose measurement. In the previous works, the dosimeter benefits from a printed circuit board mount. Both the sensor and the electronics are exposed to radiation, the problem of the radiation induced damage is supposedly being addressed. In both cases, the use of optical fibers can provide an elegant solution. Optical fibers offer a unique capability for remote monitoring of radiation in difficult-to-access and hazardous locations. Optical fiber can be located in radiation hazardous areas and optically interrogated from a safe distance. Hence, optical fiber dosemeters are immune to electrical and radio-frequency interference that can seriously degrade the performance of remote electronic dosimeters. In this paper, a novel remote optical fiber radiation dosimeter is described. The optical fiber dosimeter takes advantage of the charge trapping materials CaS:Ce, Sm and SrS:Eu, Sm that exhibit optically stimulated luminescence (OSL). The range of the dosimeter is from 0.01 to 1000Gy. The optically stimulated luminescent (OSL) radiation dosimeter technically surveys a wide dynamic measurement range and a high sensitivity. The equipment is relatively simple and small in size, and has low power consumption. This device is suitable for measuring the space radiation dose; it also can be used in high radiation dose condition and other dangerous radiation occasions.
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Moscatiello, Ali, Benjamin Cerdan, Camille Gironde, Christophe Furger, David Dubuc, and Katia Grenier. "Dosimetry Performances of a MultiWell-Plate-Based Near-Field RF Applicator for the Investigation of EM Impact on Biological Cells." In 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022. IEEE, 2022. http://dx.doi.org/10.1109/ims37962.2022.9865593.

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Reports on the topic "Dosimetric performance"

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McMahan, K. L., and L. J. Schwanke. Performance of the CEDS Accident Dosimetry System at the 1995 Los Alamos National Laboratory Nuclear Accident Dosimetry Intercomparison. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/459960.

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Klemic, G., P. Shebell, M. Monetti, F. Raccah, J. Shobe, P. Lamperti, C. Soares, and S. Sengupta. Pilot test of ANSI draft standard N13.29 environmental dosimetry -- Performance criteria for testing. Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/319876.

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Humphreys, J. C., and J. C. Humphreys. Criteria for characterization and performance of a high-dose radiation dosimetry calibraton laboratory. Gaithersburg, MD: National Institute of Standards and Technology, 1996. http://dx.doi.org/10.6028/nist.sp.907.

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Department of Energy standard for the performance testing of personnel dosimetry systems. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/6989809.

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