Analysis of influence of digital mammography on the individual average glandular dose against screen-film system

Yoshiharu Azuma, S. Goto, T. Sumimoto, Y. Takeda

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

Abstract

We investigated difference of the individual average glandular dose (AGD) as individual patient dose between digital and screen-film mammography systems. The difference was analyzed for every individual breast thickness or breast density. AGD that is average radiation absorbed dose to glandular breast tissue is accepted as an estimation of the patient dose in mammography. If calculating the individual AGD, Glandular Rate, which is the rate of the quantity of glandular tissues to breast, should be known for each patient. Then, we built an estimating system of individual glandular rate from each clinical mammogram by using breast tissue equivalent phantoms that are able to change the mixture ratio of adipose and glandular tissue and the thickness. Two data sets of Cranial- Caudal view mammograms were estimated. The one is 100 images from 50 patients by the screen-film (min-R 2000, kodak), and the another is 49 images from 25 patients by computed radiography (CR, Fuji) system. AGDs of screen-film and CR systems were 1.6mGy and 2.0mGy, respectively. The increase of AGD showed the plus correlation with breast thickness.

Original languageEnglish
Title of host publicationIFMBE Proceedings
EditorsSun I. Kim, Tae Suk Suh
PublisherSpringer Verlag
Pages1541-1545
Number of pages5
Edition1
ISBN (Print)9783540368397
DOIs
Publication statusPublished - 2007
Event10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 - Seoul, Korea, Republic of
Duration: Aug 27 2006Sep 1 2006

Publication series

NameIFMBE Proceedings
Number1
Volume14
ISSN (Print)1680-0737
ISSN (Electronic)1433-9277

Other

Other10th World Congress on Medical Physics and Biomedical Engineering, WC 2006
Country/TerritoryKorea, Republic of
CitySeoul
Period8/27/069/1/06

Keywords

  • Average glandular dose
  • Breast density
  • Compressed breast thickness
  • Computed radiography
  • Mammography

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering

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