An optical common-mode rejection for improving the sensitivity limit of a radiochromic imaging film

Hiroko Ohuchi, Ken Abe

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We found out that the dosimetric sensitivity limit of a radiochromic film can be much improved through use of a set of color components, e.g. red R and green G, outputs from an RGB color scanner. The two light component lights suffer a common fate, with the exception of wavelength-dependent events, having passed together along common attenuation paths. The mathematical operation of creating a ratio of the two components (R:G) is analogous to the 'common-mode rejection' (CMR) in electronics. In the case of the GAFCHROMIC films, HS-14 and MD-55-2, the detection limit was found to be greatly improved with optical CMR, and the lowest detectable dose attained was 20 mGy for HS-14 and 50 mGy for MD-55-2.

本文言語English
ページ(範囲)576-579
ページ数4
ジャーナルNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
558
2
DOI
出版ステータスPublished - 2006 3 15

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学

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