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Bagherzadeh-Atashchi S, Ghal-Eh N, Rahmani F, Izadi-Najafabadi R, Bedenko SV. Neutron spectroscopy with TENIS using an artificial neural network. Appl Radiat Isot 2023; 201:111035. [PMID: 37741070 DOI: 10.1016/j.apradiso.2023.111035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 08/20/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
In this research, a ThErmal Neutron Imaging System (TENIS) consisting of two perpendicular sets of plastic scintillator arrays for boron neutron capture therapy (BNCT) application has been investigated in a completely different approach for neutron energy spectrum unfolding. TENIS provides a thermal neutron map based on the detection of 2.22 MeV gamma-rays resulting from 1H(nth, γ)2D reactions, but in the present study, the 70-pixel thermal neutron images have been used as input data for unfolding the energy spectrum of incident neutrons. Having generated the thermal neutron images for 109 incident mono-energetic neutrons, a 70 × 109 response matrix has been generated using the MCNPX2.6 code for feeding into the artificial neural network tools of MATLAB. The errors of the final results for mono-energetic neutron sources are less than 10% and the root mean square error (RMSE) for the unfolded neutron spectrum of 252Cf is about 0.01. The agreement of the unfolding results for mono-energetic and 252Cf neutron sources confirms the performance of the TENIS system as a neutron spectrometer.
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Affiliation(s)
- S Bagherzadeh-Atashchi
- Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 91775-1436, Mashhad, Iran
| | - N Ghal-Eh
- Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 91775-1436, Mashhad, Iran.
| | - F Rahmani
- Department of Physics, K. N. Toosi University of Technology, P.O. Box 16315-1618, Tehran, Iran
| | - R Izadi-Najafabadi
- Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 91775-1436, Mashhad, Iran
| | - S V Bedenko
- School of Nuclear Science and Engineering, Tomsk Polytechnic University, P.O. Box 634050, Tomsk, Russian Federation
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Clinical Viability of Boron Neutron Capture Therapy for Personalized Radiation Treatment. Cancers (Basel) 2022; 14:cancers14122865. [PMID: 35740531 PMCID: PMC9221296 DOI: 10.3390/cancers14122865] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/05/2022] [Accepted: 06/08/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Usually, for dose planning in radiotherapy, the tumor is delimited as a volume on the image of the patient together with other clinical considerations based on populational evidence. However, the same prescription dose can provide different results, depending on the patient. Unfortunately, the biological aspects of the tumor are hardly considered in dose planning. Boron Neutron Capture Radiotherapy enables targeted treatment by incorporating boron-10 at the cellular level and irradiating with neutrons of a certain energy so that they produce nuclear reactions locally and almost exclusively damage the tumor cell. This technique is not new, but modern neutron generators and more efficient boron carriers have reactivated the clinical interest of this technique in the pursuit of more precise treatments. In this work, we review the latest technological facilities and future possibilities for the clinical implementation of BNCT and for turning it into a personalized therapy. Abstract Boron Neutron Capture Therapy (BNCT) is a promising binary disease-targeted therapy, as neutrons preferentially kill cells labeled with boron (10B), which makes it a precision medicine treatment modality that provides a therapeutic effect exclusively on patient-specific tumor spread. Contrary to what is usual in radiotherapy, BNCT proposes cell-tailored treatment planning rather than to the tumor mass. The success of BNCT depends mainly on the sufficient spatial biodistribution of 10B located around or within neoplastic cells to produce a high-dose gradient between the tumor and healthy tissue. However, it is not yet possible to precisely determine the concentration of 10B in a specific tissue in real-time using non-invasive methods. Critical issues remain to be resolved if BNCT is to become a valuable, minimally invasive, and efficient treatment. In addition, functional imaging technologies, such as PET, can be applied to determine biological information that can be used for the combined-modality radiotherapy protocol for each specific patient. Regardless, not only imaging methods but also proteomics and gene expression methods will facilitate BNCT becoming a modality of personalized medicine. This work provides an overview of the fundamental principles, recent advances, and future directions of BNCT as cell-targeted cancer therapy for personalized radiation treatment.
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Hou Z, Geng C, Tang X, Tian F, Zhao S, Qi J, Shu D, Gong C. Boron concentration prediction from Compton camera image for boron neutron capture therapy based on generative adversarial network. Appl Radiat Isot 2022; 186:110302. [DOI: 10.1016/j.apradiso.2022.110302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 04/16/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
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Abbene L, Principato F, Buttacavoli A, Gerardi G, Bettelli M, Zappettini A, Altieri S, Auricchio N, Caroli E, Zanettini S, Protti N. Potentialities of High-Resolution 3-D CZT Drift Strip Detectors for Prompt Gamma-Ray Measurements in BNCT. SENSORS (BASEL, SWITZERLAND) 2022; 22:1502. [PMID: 35214414 PMCID: PMC8878856 DOI: 10.3390/s22041502] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/09/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Recently, new high-resolution cadmium-zinc-telluride (CZT) drift strip detectors for room temperature gamma-ray spectroscopic imaging were developed by our group. The CZT detectors equipped with orthogonal anode/cathode collecting strips, drift strips and dedicated pulse processing allow a detection area of 6 × 20 mm2 and excellent room temperature spectroscopic performance (0.82% FWHM at 661.7 keV). In this work, we investigated the potentialities of these detectors for prompt gamma-ray spectroscopy (PGS) in boron neutron capture therapy (BNCT). The detectors, exploiting the measurement of the 478 keV prompt gamma rays emitted by 94% 7Li nuclides from the 10B(n, α)7Li reaction, are very appealing for the development of single-photon emission computed tomography (SPECT) systems and Compton cameras in BNCT. High-resolution gamma-ray spectra from 10B samples under thermal neutrons were measured at the T.R.I.G.A. Mark II research nuclear reactor of the University of Pavia (Italy).
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Affiliation(s)
- Leonardo Abbene
- Department of Physics and Chemistry (DiFC)—Emilio Segrè, University of Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy; (L.A.); (A.B.); (G.G.)
| | - Fabio Principato
- Department of Physics and Chemistry (DiFC)—Emilio Segrè, University of Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy; (L.A.); (A.B.); (G.G.)
| | - Antonino Buttacavoli
- Department of Physics and Chemistry (DiFC)—Emilio Segrè, University of Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy; (L.A.); (A.B.); (G.G.)
| | - Gaetano Gerardi
- Department of Physics and Chemistry (DiFC)—Emilio Segrè, University of Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy; (L.A.); (A.B.); (G.G.)
| | - Manuele Bettelli
- IMEM/CNR, Parco Area delle Scienze 37/A, 43100 Parma, Italy; (M.B.); (A.Z.)
| | - Andrea Zappettini
- IMEM/CNR, Parco Area delle Scienze 37/A, 43100 Parma, Italy; (M.B.); (A.Z.)
| | - Saverio Altieri
- Department of Physics, University of Pavia and Nuclear Physics National Institute (INFN), Unit of Pavia, Via Agostino Bassi 6, 27100 Pavia, Italy; (S.A.); (N.P.)
| | | | - Ezio Caroli
- INAF/OAS Bologna, 40129 Bologna, Italy; (N.A.); (E.C.)
| | | | - Nicoletta Protti
- Department of Physics, University of Pavia and Nuclear Physics National Institute (INFN), Unit of Pavia, Via Agostino Bassi 6, 27100 Pavia, Italy; (S.A.); (N.P.)
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Murata I, Kusaka S, Minami K, Saraue N, Tamaki S, Kato I, Sato F. Design of SPECT for BNCT to measure local boron dose with GAGG scintillator. Appl Radiat Isot 2021; 181:110056. [PMID: 34953318 DOI: 10.1016/j.apradiso.2021.110056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 09/20/2021] [Accepted: 12/01/2021] [Indexed: 11/02/2022]
Abstract
Boron Neutron Capture Therapy (BNCT) is a promising cancer therapy, which has recently been in practical use in Japan especially using an accelerator. In BNCT real-time measurement of local boron dose is required. In the present study, a novel design of a SPECT system for BNCT (BNCT-SPECT) has been carried out to realize estimation of the local boron dose, i.e., treatment effect of BNCT. Necessary performance which BNCT community requires includes accuracy of 5% and spatial resolution of 5 mm, which are regarded to be difficult to realize. A possible design was investigated to meet the requirements. The design results we achieved are as follows: As for the elemental detection device, GAGG (3.5 × 3.5 × 30 mm3) was selected, and for the collimator, the collimator hole diameter was 3.5 mm, the collimator hole pitch was 4 mm and the collimator length was 26 cm. For the obtained performance with the design, the accuracy was 4.4% and the spatial resolution was 5.1 mm. Currently prior to production of the real system, a prototype of BNCT-SPECT is being developed to acquire real projection data to confirm the performance and examine our own image reconstruction method with the obtained projection data.
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Affiliation(s)
- Isao Murata
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan.
| | - Sachie Kusaka
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan
| | - Kentaro Minami
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan
| | - Nobuhide Saraue
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan
| | - Shingo Tamaki
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan
| | - Itsuro Kato
- Department of Oral and Maxillofacial Surgery 2, Graduate School of Dentistry, Osaka University, Japan
| | - Fuminobu Sato
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, Japan
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Kim M, Hong BH, Cho I, Park C, Min SH, Hwang WT, Lee W, Kim KM. Design of a scintillator-based prompt gamma camera for boron-neutron capture therapy: Comparison of SrI2 and GAGG using Monte-Carlo simulation. NUCLEAR ENGINEERING AND TECHNOLOGY 2021. [DOI: 10.1016/j.net.2020.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yang HJ, Yoon DK, Suh TS. Sensing changes in tumor during boron neutron capture therapy using PET with a collimator: Simulation study. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2020.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim MS, Shin HB, Choi MG, Monzen H, Shim JG, Suh TS, Yoon DK. Reference based simulation study of detector comparison for BNCT-SPECT imaging. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2019.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Optimization of the Compton camera for measuring prompt gamma rays in boron neutron capture therapy. Appl Radiat Isot 2017; 124:62-67. [DOI: 10.1016/j.apradiso.2017.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/23/2017] [Accepted: 03/17/2017] [Indexed: 11/18/2022]
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Manabe M, Nakamura S, Murata I. Study on measuring device arrangement of array-type CdTe detector for BNCT-SPECT. Rep Pract Oncol Radiother 2016; 21:102-7. [PMID: 26933391 DOI: 10.1016/j.rpor.2015.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 12/12/2014] [Accepted: 04/06/2015] [Indexed: 10/23/2022] Open
Abstract
AIM To design the measuring device arrangement of array-type CdTe detector for BNCT-SPECT. BACKGROUND In a boron neutron capture therapy, a very serious unsolved problem exists, namely that the treatment effect for BNCT cannot be known during irradiation in real time. Therefore, we have been developing a so-called BNCT-SPECT with a CdTe detector, which can obtain a three-dimensional image for the BNCT treatment effect by measuring 478 keV gamma-rays emitted from the excited state of (7)Li nucleus created by the (10)B(n,α) reaction. However, no practical uses were realized at present, because BNCT-SPECT requires very severe conditions for spatial resolution, measuring time, statistical accuracy and energy resolution. MATERIALS AND METHODS The design study was performed with numerical simulations carried out by a 3-dimenaional transport code, MCNP5 considering the detector assembly, irradiation room and even arrangement of arrayed CdTe crystals. RESULTS The estimated count rate of 478 keV gamma-rays was sufficiently large being more than the target value of over 1000 counts/h. However, the S/N ratio did not meet the target of S/N > 1. We confirmed that deterioration of the S/N ratio was caused by the influence of Compton scattering especially due to capture gamma-rays of hydrogen. Theoretical calculations were thereafter carried out to find out whether anti-Compton measurement in an array-type CdTe detector could decrease the noise due to Compton scatterings. CONCLUSIONS The calculation result showed that the anti-coincidence would possibly increase the S/N ratio. In the next phase, an arrayed detector with two CdTe crystals will be produced to test removal possibility of the anti-coincident event.
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Affiliation(s)
- Masanobu Manabe
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
| | - Soichiro Nakamura
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
| | - Isao Murata
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
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Yoon DK, Jung JY, Jo Hong K, Sil Lee K, Suk Suh T. GPU-based prompt gamma ray imaging from boron neutron capture therapy. Med Phys 2015; 42:165-9. [PMID: 25563257 DOI: 10.1118/1.4903265] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The purpose of this research is to perform the fast reconstruction of a prompt gamma ray image using a graphics processing unit (GPU) computation from boron neutron capture therapy (BNCT) simulations. METHODS To evaluate the accuracy of the reconstructed image, a phantom including four boron uptake regions (BURs) was used in the simulation. After the Monte Carlo simulation of the BNCT, the modified ordered subset expectation maximization reconstruction algorithm using the GPU computation was used to reconstruct the images with fewer projections. The computation times for image reconstruction were compared between the GPU and the central processing unit (CPU). Also, the accuracy of the reconstructed image was evaluated by a receiver operating characteristic (ROC) curve analysis. RESULTS The image reconstruction time using the GPU was 196 times faster than the conventional reconstruction time using the CPU. For the four BURs, the area under curve values from the ROC curve were 0.6726 (A-region), 0.6890 (B-region), 0.7384 (C-region), and 0.8009 (D-region). CONCLUSIONS The tomographic image using the prompt gamma ray event from the BNCT simulation was acquired using the GPU computation in order to perform a fast reconstruction during treatment. The authors verified the feasibility of the prompt gamma ray image reconstruction using the GPU computation for BNCT simulations.
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Affiliation(s)
- Do-Kun Yoon
- Department of Biomedical Engineering and Research Institute of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul 505 137-701, Korea
| | - Joo-Young Jung
- Department of Biomedical Engineering and Research Institute of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul 505 137-701, Korea
| | - Key Jo Hong
- Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University, 300 Pasteur Drive, Stanford, California 94305
| | - Keum Sil Lee
- Department of Radiation Oncology, Stanford University School of Medicine, 875 Blake Wilbur Drive, Stanford, California 94305-5847
| | - Tae Suk Suh
- Department of Biomedical Engineering and Research Institute of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul 505 137-701, Korea
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Murata I, Nakamura S, Manabe M, Miyamaru H, Kato I. Characterization measurement of a thick CdTe detector for BNCT-SPECT - detection efficiency and energy resolution. Appl Radiat Isot 2014; 88:129-33. [PMID: 24581600 DOI: 10.1016/j.apradiso.2014.01.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 01/30/2014] [Accepted: 01/30/2014] [Indexed: 10/25/2022]
Abstract
Author׳s group is carrying out development of BNCT-SPECT with CdTe device, which monitors the therapy effect of BNCT in real-time. From the design calculations, the dimensions were fixed to 1.5×2×30mm(3). For the collimator it was confirmed that it would have a good spatial resolution and simultaneously the number of counts would be acceptably large. After producing the CdTe crystal, the characterization measurement was carried out. For the detection efficiency an excellent agreement between calculation and measurement was obtained. Also, the detector has a very good energy resolution so that gamma-rays of 478keV and 511keV could be distinguished in the spectrum.
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Affiliation(s)
- Isao Murata
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan.
| | - Soichiro Nakamura
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
| | - Masanobu Manabe
- Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
| | - Hiroyuki Miyamaru
- Radiation Research Center, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Itsuro Kato
- Department of Oral and Maxillofacial Surgery II, Graduate School of Dentistry, Osaka University, Yamada-oka 1-8, Suita, Osaka 565-0871, Japan
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A feasibility study of multiplexing parallelbeam. Appl Radiat Isot 2013; 75:1-5. [DOI: 10.1016/j.apradiso.2013.01.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 01/07/2013] [Accepted: 01/13/2013] [Indexed: 11/18/2022]
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