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Gambarini G, Artuso E, Giove D, Volpe L, Agosteo S, Barcaglioni L, Campi F, Garlati L, Pola A, Durisi E, Borroni M, Carrara M, Klupak V, Marek M, Viererbl L, Vins M, d’Errico F. Fricke-gel dosimetry in epithermal or thermal neutron beams of a research reactor. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2015.03.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gambarini G, Artuso E, Giove D, Felisi M, Volpe L, Barcaglioni L, Agosteo S, Garlati L, Pola A, Klupak V, Viererbl L, Vins M, Marek M. Study of suitability of Fricke-gel-layer dosimeters for in-air measurements to characterise epithermal/thermal neutron beams for NCT. Appl Radiat Isot 2015; 106:145-50. [PMID: 26249744 DOI: 10.1016/j.apradiso.2015.07.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 06/15/2015] [Accepted: 07/25/2015] [Indexed: 11/30/2022]
Abstract
The reliability of Fricke gel dosimeters in form of layers for measurements aimed at the characterization of epithermal neutron beams has been studied. By means of dosimeters of different isotopic composition (standard, containing (10)B or prepared with heavy water) placed against the collimator exit, the spatial distribution of gamma and fast neutron doses and of thermal neutron fluence are attained. In order to investigate the accuracy of the results obtained with in-air measurements, suitable MC simulations have been developed and experimental measurements have been performed utilizing Fricke gel dosimeters, thermoluminescence detectors and activation foils. The studies were related to the epithermal beam designed for BNCT irradiations at the research reactor LVR-15 (Řež). The results of calculation and measurements have revealed good consistency of gamma dose and fast neutron 2D distributions obtained with gel dosimeters in form of layers. In contrast, noticeable modification of thermal neutron fluence is caused by the neutron moderation produced by the dosimeter material. Fricke gel dosimeters in thin cylinders, with diameter not greater than 3mm, have proved to give good results for thermal neutron profiling. For greater accuracy of all results, a better knowledge of the dependence of gel dosimeter sensitivity on radiation LET is needed.
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Affiliation(s)
- G Gambarini
- Department of Physics, Università degli Studi di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy.
| | - E Artuso
- Department of Physics, Università degli Studi di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - D Giove
- Department of Physics, Università degli Studi di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - M Felisi
- Department of Physics, Università degli Studi di Milano, Milan, Italy
| | - L Volpe
- Department of Physics, Università degli Studi di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - L Barcaglioni
- Energy Department, Politecnico di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - S Agosteo
- Energy Department, Politecnico di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - L Garlati
- Energy Department, Politecnico di Milano, Milan, Italy
| | - A Pola
- Energy Department, Politecnico di Milano, Milan, Italy; INFN, Istituto Nazionale di Fisica Nucleare, Italy
| | - V Klupak
- Department of Neutron Physics, Research Centre Řež, Czech Republic
| | - L Viererbl
- Department of Neutron Physics, Research Centre Řež, Czech Republic
| | - M Vins
- Department of Neutron Physics, Research Centre Řež, Czech Republic
| | - M Marek
- Department of Neutron Physics, Research Centre Řež, Czech Republic
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Role of gel dosimeters in boron neutron capture therapy. Appl Radiat Isot 2015; 103:72-81. [PMID: 26070173 DOI: 10.1016/j.apradiso.2015.05.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 02/10/2015] [Accepted: 05/26/2015] [Indexed: 12/27/2022]
Abstract
Gel dosimeters have acquired a unique status in radiotherapy, especially with the advent of the new techniques in which there is a need for three-dimensional dose measurement with high spatial resolution. One of the techniques in which the use of gel dosimeters has drawn the attention of the researchers is the boron neutron capture therapy. Exploring the history of gel dosimeters, this paper sets out to study their role in the boron neutron capture therapy dosimetric process.
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