Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections

Souichiro Kawaguchi, Yoshiki Yamaguchi, Hidetaka Arimura, Junji Morishita, Masafumi Ohki, Yoshinori Uno, Tadamitsu Ideguchi, Yoshiharu Higashida, Fukai Toyofuku

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

1 Citation (Scopus)

Abstract

The analysis of the x-ray spectrum is important for quality assurance (QA) and quality control (QC) of a radiographic system such as mammography. In the case of mammography, the direct measurement of the primary x-ray spectra under clinical conditions is very difficult and time-consuming mainly because it is almost impossible to increase the longitudinal distance between the focal spot and x-ray detector in order to make the photon counting measurement possible. An alternative way of measuring the primary spectra is to correct the 90 degree scattered x-ray spectra which can be measured without photon pile-up since the intensity of the scattered x-rays is significantly lowered. The scattered x-ray spectrum is composed of two components, Compton scattered photons and Rayleigh scattered photons. We have developed a new method of reconstructing the primary x-ray spectrum from the scattered x-ray spectrum taking into account both Rayleigh and Compton scattered photons . The 90 degree scattered x-ray spectrum from a 28 kV mammography x-ray unit was measured at a tube voltage by using a CdTe semiconductor detector. The reconstructed spectrum agreed fairly well with a directly measured primary x-ray spectrum. The Rayleigh and Compton scattering correction method could be suitable for measuring the mammography x-ray spectra under clinical conditions and useful for QA and QC of the mammography x-ray units.

Original languageEnglish
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging
Pages231-233
Number of pages3
Volume25
Edition2
DOIs
Publication statusPublished - 2009
EventWorld Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging - Munich, Germany
Duration: Sep 7 2009Sep 12 2009

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging
CountryGermany
CityMunich
Period9/7/099/12/09

Fingerprint

Compton scattering
Rayleigh scattering
Mammography
X rays
Photons
Quality assurance
Quality control
Semiconductor detectors
Piles

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Bioengineering

Cite this

Kawaguchi, S., Yamaguchi, Y., Arimura, H., Morishita, J., Ohki, M., Uno, Y., ... Toyofuku, F. (2009). Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections. In World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging (2 ed., Vol. 25, pp. 231-233) https://doi.org/10.1007/978-3-642-03879-2-65

Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections. / Kawaguchi, Souichiro; Yamaguchi, Yoshiki; Arimura, Hidetaka; Morishita, Junji; Ohki, Masafumi; Uno, Yoshinori; Ideguchi, Tadamitsu; Higashida, Yoshiharu; Toyofuku, Fukai.

World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging. Vol. 25 2. ed. 2009. p. 231-233.

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

Kawaguchi, S, Yamaguchi, Y, Arimura, H, Morishita, J, Ohki, M, Uno, Y, Ideguchi, T, Higashida, Y & Toyofuku, F 2009, Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections. in World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging. 2 edn, vol. 25, pp. 231-233, World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging, Munich, Germany, 9/7/09. https://doi.org/10.1007/978-3-642-03879-2-65
Kawaguchi S, Yamaguchi Y, Arimura H, Morishita J, Ohki M, Uno Y et al. Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections. In World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging. 2 ed. Vol. 25. 2009. p. 231-233 https://doi.org/10.1007/978-3-642-03879-2-65
Kawaguchi, Souichiro ; Yamaguchi, Yoshiki ; Arimura, Hidetaka ; Morishita, Junji ; Ohki, Masafumi ; Uno, Yoshinori ; Ideguchi, Tadamitsu ; Higashida, Yoshiharu ; Toyofuku, Fukai. / Reconstruction of mammography x-ray spectrum by using Rayleigh and Compton scattering corrections. World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging. Vol. 25 2. ed. 2009. pp. 231-233
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