A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy

Koichi Maruyama, Takashi Hanada, Riki Kikumura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Heavy ion cancer therapy by using energetic carbon ions has been successfully under way at HIMAC, Japan. The method is advantageous over the traditional radiation therapy by using photons and electrons in two points: dose concentration owing to the Bragg peak and high biological effects of the beam. However, the beam loss due to the nuclear fragmentation reactions in the patient body causes modification in the dose calculation of therapy. Although there has been several studies for the evaluation of fragmentation reactions with detectors of limited geometrical acceptances, they are not enough to cover the entire events. We established a method to identify the fragmentation reactions induced by the carbon beam by using a total-absorption-type target detector that plays the role of human phantom, as well as a system of plastic scintillation counters surrounding the phantom. We carried out measurements for the C beam with the detector system. The contributions from fragmentation reactions increase as a function of incident energies. That is, a portion of the energy of the C beam is lost as fragment particles in phantom, and leads to decrease of beam purity in consequence. Our study shows that fragmentation reactions in carbon therapy must be carefully taken into account in the treatment planning, and our data is indispensable for estimation of fragmentation reactions generated by carbon beam.

Original languageEnglish
Title of host publicationIEEE Nuclear Science Symposium Conference Record
EditorsJ.A. Seibert
Pages1773-1775
Number of pages3
Volume3
Publication statusPublished - 2004
Externally publishedYes
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: 2004 Oct 162004 Oct 22

Other

Other2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
CountryItaly
CityRome
Period04/10/1604/10/22

Fingerprint

Nuclear reactions
Carbon
Detectors
Scintillation counters
Radiotherapy
Heavy ions
Photons
Plastics
Planning
Electrons
Ions

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Maruyama, K., Hanada, T., & Kikumura, R. (2004). A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy. In J. A. Seibert (Ed.), IEEE Nuclear Science Symposium Conference Record (Vol. 3, pp. 1773-1775)

A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy. / Maruyama, Koichi; Hanada, Takashi; Kikumura, Riki.

IEEE Nuclear Science Symposium Conference Record. ed. / J.A. Seibert. Vol. 3 2004. p. 1773-1775.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Maruyama, K, Hanada, T & Kikumura, R 2004, A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy. in JA Seibert (ed.), IEEE Nuclear Science Symposium Conference Record. vol. 3, pp. 1773-1775, 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors, Rome, Italy, 04/10/16.
Maruyama K, Hanada T, Kikumura R. A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy. In Seibert JA, editor, IEEE Nuclear Science Symposium Conference Record. Vol. 3. 2004. p. 1773-1775
Maruyama, Koichi ; Hanada, Takashi ; Kikumura, Riki. / A novel method to evaluate the carbon-beam attenuation due to nuclear fragmentation reactions for cancer therapy. IEEE Nuclear Science Symposium Conference Record. editor / J.A. Seibert. Vol. 3 2004. pp. 1773-1775
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