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You searched on: Author: ronaldo minniti

Displaying records 11 to 20 of 30 records.
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11. Effect of Neutron Irradiation on Dosimetric Properties of the TLD-600H (Lif6:Mg,Cu,P)
Published: 11/1/2011
Authors: Alexander A Romanyukha, Ronaldo Minniti, M. Moscovitch, Alan K Thompson, F. Trompier, Ronald Colle, A Sucheta, S. P. Voss, L. A. Benevides
Abstract: Ideally, dosimeters should measure the dose without their dosimetric properties being affected by the radiation type being measured. Industry-wide occupational radiation workers that can be potentially exposed to neutron radiation fields are routine ...

12. High-resolution 3D dose distribution measured for two low-energy x-ray brachytherapy seeds: I125 and PD103
Published: 11/3/2010
Authors: Guerda Massillon, Ronaldo Minniti, Michael G Mitch, Christopher Graham Soares
Abstract: An investigation of the three-dimensional (3D) absorbed dose distribution around two low-energy photon (125I and 103Pd) brachytherapy seeds is presented. A high spatial resolution 3D gel scanning system has been utilized. The radial dose function, g( ...

13. Comparison of Air Kerma and Absorbed Dose to Water Measurements of Co-60 Radiation Beams in Radiotherapy
Published: 4/30/2010
Authors: Ronaldo Minniti, I. Csete, A.G. Leiton, V. Sochor, A. Lapenas, J.-E Grindborg, I Jokelainen, H. Bjerke, J. Dobrovodsky, A. Megzifene, H.J. Costas, R. Ivanov, B. Vekic, J. Kokocinski, H.J. Cardoso, L. Buermann, W. Tiefenboeck, G. Stucki, E. van Dijk , M P Toni, J.P. McCaffrey,, C.N.M. da Silva, I Kharitonov, D. Webb, M Saravi, F. Delaunay
Abstract: The results of the 25 participants of the EUROMET.RI(I)-K1 and EUROMET.RI(I)-K4 key comparisons are reported to support their relevant CMC claims being published or going to be published by the participant laboratories. The measured quantities were ...

14. Validation Testing of ANSI/IEEE N42.49 Standard Requirements for Personal Emergency Radiation Detectors
Published: 4/30/2010
Authors: Leticia S Pibida, Ronaldo Minniti, C Michelle O\'Brien
Abstract: Various radiation detectors including thirteen electronic Personal Emergency Radiation Detectors (PERDs), radiochromic film cards and thermoluminescent dosimeters (TLDs) were used to validate a subset of the radiological test requirements listed in t ...

15. Comparison between the NIST and the KEBS for the Determination of Air kerma Calibration Coefficients for Narrow X-ray Spectra and Cs-137 Gamma-Ray Beams
Series: Journal of Research (NIST JRES)
Published: 2/26/2010
Authors: C Michelle O\'Brien, Ronaldo Minniti, Stanslaus Masinza
Abstract: Air kerma calibration coefficients for a reference class ionization chamber from narrow x-ray spectra and cesium 137 gamma ray beams were compared between the National Institute of Standards and Technology (NIST) and the Kenya Bureau of Standards (KE ...

16. Characteristics of a new polymer gel for high-ionization density dosimetry using a micro optical CT scanner
Published: 12/1/2009
Authors: Guerda Massillon, Ronaldo Minniti, Christopher Graham Soares, M.J. Maryanski, S Robertson
Abstract: In this work, the properties of the new BANG gel, specifically made for high-ionization density dosimetry, were investigated. The measurements were performed at NIST using a small calibrated 60Co gamma field of 1 cm x 1 cm, and a 1 cm active diameter ...

17. Treatment of Uncertainties in Radiation Dosimetry
Published: 8/18/2009
Authors: Michael G Mitch, Larry DeWerd, Ronaldo Minniti, J Williamson
Abstract: When one perform a physical measurement or a Monte Carlo simulation and obtains a numerical result, the following questions may be asked. How accurate is the result? Is the measurement or simulation method of high quality? Can the result be meaning ...

18. Use of BANG3-Pro-1 gel Dosimetry to Measure the 3D Dose Distribution of a Sr90/Y90 Intravascular Brachytherapy Seed.
Published: 8/18/2009
Authors: Guerda Massillon, Ronaldo Minniti, Michael G Mitch, M.J. Maryanski, Christopher Graham Soares
Abstract: Absorbed dose distributions in 3D imparted by a single Novoste 5F 90Sr/90Y beta particle source of the type formerly used for intravascular brachytherapy were investigated. An innovative dosimetry medium known as BANG3-Pro-1 gel was used as a dosimet ...

19. Technical Aspects of the Dissemination of the Air-Kerma Standard from Cs137 Gamma-Ray Beams in the United States
Published: 10/20/2008
Author: Ronaldo Minniti
Abstract: The national standard for air kerma from gamma-ray beams is maintained in the US by the National Institute of Standards and Technology (NIST), the primary standard dosimetry laboratory in the US. The standard is disseminated throughout the US by a w ...

20. Calibration of a 137Cs Gamma-ray Beam Irradiator Using Large Size Chambers
Published: 1/1/2007
Authors: Ronaldo Minniti, Stephen Michael Seltzer

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