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Analysis Of Accelerator Based Neutron Spectra For Bnct Using Proton Recoil Spectroscopy
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Book Synopsis Analysis of Accelerator Based Neutron Spectra for BNCT Using Proton Recoil Spectroscopy by :
Download or read book Analysis of Accelerator Based Neutron Spectra for BNCT Using Proton Recoil Spectroscopy written by and published by . This book was released on 1998 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron Neutron Capture Therapy (BNCT) is a promising binary treatment modality for high-grade primary brain tumors (glioblastoma multiforme, GM) and other cancers. BNCT employs a boron-10 containing compound that preferentially accumulates in the cancer cells in the brain. Upon neutron capture by 1°B energetic alpha particles and triton released at the absorption site kill the cancer cell. In order to gain penetration depth in the brain Fairchild proposed, for this purpose, the use of energetic epithermal neutrons at about 10 keV. Phase 1/2 clinical trials of BNCT for GM are underway at the Brookhaven Medical Research Reactor (BMRR) and at the MIT Reactor, using these nuclear reactors as the source for epithermal neutrons. In light of the limitations of new reactor installations, e.g. cost, safety and licensing, and limited capability for modulating the reactor based neutron beam energy spectra, alternative neutron sources are being contemplated for wider implementation of this modality in a hospital environment. For example, accelerator based neutron sources offer the possibility of tailoring the neutron beams, in terms of improved depth-dose distributions, to the individual and offer, with relative ease, the capability of modifying the neutron beam energy and port size. In previous work new concepts for compact accelerator/target configuration were published. In this work, using the Van de Graaff accelerator the authors have explored different materials for filtering and reflecting neutron beams produced by irradiating a thick Li target with 1.8 to 2.5 MeV proton beams. However, since the yield and the maximum neutron energy emerging from the Li-7(p, n)Be-7 reaction increase with increase in the proton beam energy, there is a need for optimization of the proton energy versus filter and shielding requirements to obtain the desired epithermal neutron beam. The MCNP-4A computer code was used for the initial design studies that were verified with benchmark experiments using a proton recoil spectroscopy detection system. Comparison was also made between in phantom 1°BF3 readings made at the BMRR and those made at the RARAF accelerator facility.
Book Synopsis Spectral Characterization of Accelerator-based Epithermal Neutron Beams for BNCT and BNCS Using Neutron Activation Foils by : Laura Grace Murphy
Download or read book Spectral Characterization of Accelerator-based Epithermal Neutron Beams for BNCT and BNCS Using Neutron Activation Foils written by Laura Grace Murphy and published by . This book was released on 1999 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Frontiers in Neutron Capture Therapy by : M. Frederick Hawthorne
Download or read book Frontiers in Neutron Capture Therapy written by M. Frederick Hawthorne and published by Springer. This book was released on 2013-11-11 with total page 1389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frontiers in Neutron Capture Therapy contains current research results originally presented at the Eighth International Symposium on Neutron Capture Therapy for Cancer in La Jolla, CA. This comprehensive collection of peer-reviewed manuscripts is showcased in two volumes covering all aspects of the development of this multidisciplinary approach to cancer therapy. Volume I of this work includes clinical results and current progress in treatment planning, neutron sources and dosimetry, while Volume II presents the synthesis, pharmacology and tissue-targeting design of boron compounds, including work on preclinical dosimetry and radiobiology. Intended for researchers and clinicians involved with or interested in new modes of cancer therapy, this volume will also serve as a useful guideline for scientists, students, and practitioners in the field.
Book Synopsis Measurement of neutron spectra with hydrogen proportional counters by : R. Birch
Download or read book Measurement of neutron spectra with hydrogen proportional counters written by R. Birch and published by . This book was released on 1984 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Measeurement of the Neutron Spectrum of a Fast Critical Assembly Using Proton Recoil Proportional Counting by : Edward Joseph Lozito
Download or read book The Measeurement of the Neutron Spectrum of a Fast Critical Assembly Using Proton Recoil Proportional Counting written by Edward Joseph Lozito and published by . This book was released on 1974 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimization of the 7Li(p, N) Proton Beam Energy for BNCT Applications by :
Download or read book Optimization of the 7Li(p, N) Proton Beam Energy for BNCT Applications written by and published by . This book was released on 1996 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reaction 7Li(p, n)7 Be has been proposed as an accelerator-based source of neutrons for Boron Neutron Capture Therapy (BNCT). This reaction has a large steep resonance for proton energies of about 2.3 MeV which ends at about 2.5 MeV. It has generally been accepted that one should use 2.5 MeV protons to get the highest yield of neutrons for BNCT. This paper suggests that for BNCT the optimum proton energy may be about 2.3 MeV and that a proton energy of about 2.2 MeV will provide the same useful neutron flux outside a thinner moderator as the neutron flux from a 2.5 MeV proton beam with a, thicker moderator. These results are based on optimization of the useful neutron spectrum in air at the point of irradiation, not on depth-dose profiles in tissue/tumor.
Book Synopsis Measurement of neutron spectra with hydrogen proportional counters : part 2 : analysis of proton recoil distributions by : R. Birch
Download or read book Measurement of neutron spectra with hydrogen proportional counters : part 2 : analysis of proton recoil distributions written by R. Birch and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Spectrum Measurements Using Proton Recoil Proportional Counters by :
Download or read book Neutron Spectrum Measurements Using Proton Recoil Proportional Counters written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of degraded fission-neutron spectra using recoil proportional counters are done routinely for studies involving fast reactor mockups. The same techniques are applicable to measurements of neutron spectra required for personnel dosimetry in fast neutron environments. A brief discussion of current applications of these methods together with the results of a measurement made on the LITTLE BOY assembly at Los Alamos are here described.
Book Synopsis Fast Neutron Spectrum Measurements with a Proton Recoil Spectrometer in the Fastthermal Coupled Critical Facility Stek by : J. Montizaan
Download or read book Fast Neutron Spectrum Measurements with a Proton Recoil Spectrometer in the Fastthermal Coupled Critical Facility Stek written by J. Montizaan and published by . This book was released on 1977 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Neutron Capture Therapy by : R.F. Barth
Download or read book Advances in Neutron Capture Therapy written by R.F. Barth and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Binary systems for the treatment of cancer potentially are among the most attractive of the new therapeutic modalities that currently are under investigation. The basicconcept is to selectivelydestroy malignantcells whileconcomitantlysparing normal tissue. Neutron capture therapy (NCT) is the binary system that has been the subject of the Fifth International Symposium on Neutron Capture Therapy, which was held September13-17, 1992, in Columbus, Ohio, undertheauspicesoftheInternational Society for Neutron Capture Therapy. Its objective was to bring together researchers from throughout the world and to provide a forum at which they could present the latest advances in the development of Neutron capture therapy. Neutron capture therapy has largely, but not exclusively, focused on the use of boron-10 as the target nuclide. Boron neutron capture therapy (BNCT) is based on the nuclear reaction that occurs when the stable isotope, boron-10, absorbs low-energy non ionizing thermal neutrons to yield alphaparticles and recoiling lithium-7 nuclei. The size and energy of these high linear energy transfer (LET) particles result in their being confined largely to the cells in which the capture reaction occurs. For BNCT to be successful, a sufficient numberof I~atoms mustbe localized within neoplastic cells, and enough thermal neutrons must be delivered and absorbed by the I~ to produce a lethal 1~(n,QVLi reaction. Two major problems must be surmounted.
Book Synopsis Progress in Neutron Capture Therapy for Cancer by : B.J. Allen
Download or read book Progress in Neutron Capture Therapy for Cancer written by B.J. Allen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the many advances made in the diagnosis and therapy of cancer, the mortality rate is still about half that of the incidence rate. However, the odds are not evenly distributed. Prognosis for some cancers is good, but for others, few patients will survive 12 months. This latter group of cancers is characterised by a proclivity to disseminate malignant cells in the host organ. The degree of surgery possible may be limited by the critical nature of the organ, and chemotherapy and radiotherapy are of palliative value only. In some cases systemic metastases occur, but in other cases, failure to achieve local control results in death. First among these cancers are the high grade brain tumours, astrocytoma 3,4 and glioblastoma multiforme. Local control of these tumours should lead to cure. Other cancers melanoma metastatic to the brain, for which a useful palliative therapy is not yet available, and pancreatic cancer for which localised control at an early stage could bring about improved prognosis. Patients with these cancers have little grounds for hope. Our primary objective is to reverse this situation with Neutron Capture Therapy (NCT). The purpose of this fourth symposium is to hasten the day whereby patients with these cancers can reasonably hope for substantial remissions. The first symposium on NCT was held in Boston in 1983, followed by Tokyo in 1985 and Bremen, Germany in 1988.
Book Synopsis Intense Neutron Sources by : U.S. Atomic Energy Commission
Download or read book Intense Neutron Sources written by U.S. Atomic Energy Commission and published by . This book was released on 1966 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Wolfgang A.G. Sauerwein Publisher :Springer Science & Business Media ISBN 13 :3642313345 Total Pages :545 pages Book Rating :4.6/5 (423 download)
Book Synopsis Neutron Capture Therapy by : Wolfgang A.G. Sauerwein
Download or read book Neutron Capture Therapy written by Wolfgang A.G. Sauerwein and published by Springer Science & Business Media. This book was released on 2012-11-05 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron capture therapy (NCT) is based on the ability of the non-radioactive isotope boron-10 to capture thermal neutrons with very high probability and immediately to release heavy particles with a path length of one cell diameter, which in principle allows for tumor cell-selective high-LET particle radiotherapy. This book provides a comprehensive summary of the progress made in NCT in recent years. Individual sections cover all important aspects, including neutron sources, boron chemistry, drugs for NCT, dosimetry, and radiation biology. The use of NCT in a variety of malignancies and also some non-malignant diseases is extensively discussed. NCT is clearly shown to be a promising modality at the threshold of wider clinical application. All of the chapters are written by experienced specialists in language that will be readily understood by all participating disciplines.
Book Synopsis Photoneutron Sources by : B. W. Sargent
Download or read book Photoneutron Sources written by B. W. Sargent and published by . This book was released on 1946 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis World Congress on Medical Physics and Biomedical Engineering May 26-31, 2012, Beijing, China by : Mian Long
Download or read book World Congress on Medical Physics and Biomedical Engineering May 26-31, 2012, Beijing, China written by Mian Long and published by Springer Science & Business Media. This book was released on 2013-02-11 with total page 2385 pages. Available in PDF, EPUB and Kindle. Book excerpt: The congress’s unique structure represents the two dimensions of technology and medicine: 13 themes on science and medical technologies intersect with five challenging main topics of medicine to create a maximum of synergy and integration of aspects on research, development and application. Each of the congress themes was chaired by two leading experts. The themes address specific topics of medicine and technology that provide multiple and excellent opportunities for exchanges.
Book Synopsis 14 MeV Neutrons by : Vladivoj Valkovic
Download or read book 14 MeV Neutrons written by Vladivoj Valkovic and published by CRC Press. This book was released on 2015-08-25 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the often difficult and time-consuming effort of performing experiments with fast (14 MeV) neutrons, these neutrons can offer special insight into nucleus and other materials because of the absence of charge. 14 MeV Neutrons: Physics and Applications explores fast neutrons in basic science and applications to problems in medicine, the envir
Book Synopsis Photon, Electron, Proton, and Neutron Interaction Data for Body Tissues by :
Download or read book Photon, Electron, Proton, and Neutron Interaction Data for Body Tissues written by and published by International Commission on Radiation. This book was released on 1992-01-01 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
