Computed Radiography (CR) マンモグラフィにおける乳腺含有率の推定

Translated title of the contribution: Computerized Estimation of a Percent Glandular Tissue Composition in Computed Radiography Mammography

辻田 直子, Sachiko Gotou, Yoshiharu Azuma, 白石 順二

Research output: Contribution to journalArticle

Abstract

Measurement of a percent glandular tissue composition (%GTC) is important in terms of the estimation of individual patient exposure dose and the prediction of malignancy, and thus a number of reports for estimating %GTC by use of a mammogram have been published. In this study, we propose a method for estimating individual %GTC by use of computed radiography (CR) mammograms. By employing breast-equivalent phantoms that are able to create breast phantom images with various combinations of fat and glandular tissue, as well as the thickness of whole breast, we determined a reference table for converting an each pixel value on CR mammography to the glandular tissue ratio. Therefore, the %GTC for individual breast was estimated by averaging glandular tissue ratio for a whole region. The clinical image data set that consisted of 49 CR mammograms were used for estimating %GTC. A paired comparison method for determining subjective ranking of the degree of breast density was employed in order to demonstrate the validity of our method. The results indicate that the average estimated %GTC was 35.0% (ranged from 12.0% to 67.0%) and they had a increased correlation with the ranking of those obtained by observer test. Therefore, it was suggested that our proposed method would be utilized for estimating the %GTC in objective manner.
Original languageJapanese
Pages (from-to)1540-1547
Number of pages8
JournalNippon Hoshasen Gijutsu Gakkai zasshi
Volume67
Issue number12
DOIs
Publication statusPublished - Dec 20 2011

Fingerprint

Mammography
Radiography
Breast
Matched-Pair Analysis
Fats
Neoplasms

Keywords

  • a percent glandular tissue composition
  • computed radiography (CR)
  • mammography
  • breast-equivalent phantom

Cite this

Computed Radiography (CR) マンモグラフィにおける乳腺含有率の推定. / 辻田直子; Gotou, Sachiko; Azuma, Yoshiharu; 白石順二.

In: Nippon Hoshasen Gijutsu Gakkai zasshi, Vol. 67, No. 12, 20.12.2011, p. 1540-1547.

Research output: Contribution to journalArticle

辻田直子 ; Gotou, Sachiko ; Azuma, Yoshiharu ; 白石順二. / Computed Radiography (CR) マンモグラフィにおける乳腺含有率の推定. In: Nippon Hoshasen Gijutsu Gakkai zasshi. 2011 ; Vol. 67, No. 12. pp. 1540-1547.
@article{a8a3b6d5c1f14086aad9557d3923adc1,
title = "Computed Radiography (CR) マンモグラフィにおける乳腺含有率の推定",
abstract = "Measurement of a percent glandular tissue composition ({\%}GTC) is important in terms of the estimation of individual patient exposure dose and the prediction of malignancy, and thus a number of reports for estimating {\%}GTC by use of a mammogram have been published. In this study, we propose a method for estimating individual {\%}GTC by use of computed radiography (CR) mammograms. By employing breast-equivalent phantoms that are able to create breast phantom images with various combinations of fat and glandular tissue, as well as the thickness of whole breast, we determined a reference table for converting an each pixel value on CR mammography to the glandular tissue ratio. Therefore, the {\%}GTC for individual breast was estimated by averaging glandular tissue ratio for a whole region. The clinical image data set that consisted of 49 CR mammograms were used for estimating {\%}GTC. A paired comparison method for determining subjective ranking of the degree of breast density was employed in order to demonstrate the validity of our method. The results indicate that the average estimated {\%}GTC was 35.0{\%} (ranged from 12.0{\%} to 67.0{\%}) and they had a increased correlation with the ranking of those obtained by observer test. Therefore, it was suggested that our proposed method would be utilized for estimating the {\%}GTC in objective manner.",
keywords = "a percent glandular tissue composition, computed radiography (CR), mammography, breast-equivalent phantom, a percent glandular tissue composition, computed radiography (CR), mammography, breast-equivalent phantom",
author = "直子 辻田 and Sachiko Gotou and Yoshiharu Azuma and 順二 白石",
year = "2011",
month = "12",
day = "20",
doi = "10.6009/jjrt.67.1540",
language = "Japanese",
volume = "67",
pages = "1540--1547",
journal = "Nippon Hoshasen Gijutsu Gakkai zasshi",
issn = "0369-4305",
publisher = "Nihon Hoshasen Gijutsu Gakkai/Japanese Society of Radiological Technology",
number = "12",

}

TY - JOUR

T1 - Computed Radiography (CR) マンモグラフィにおける乳腺含有率の推定

AU - 辻田, 直子

AU - Gotou, Sachiko

AU - Azuma, Yoshiharu

AU - 白石, 順二

PY - 2011/12/20

Y1 - 2011/12/20

N2 - Measurement of a percent glandular tissue composition (%GTC) is important in terms of the estimation of individual patient exposure dose and the prediction of malignancy, and thus a number of reports for estimating %GTC by use of a mammogram have been published. In this study, we propose a method for estimating individual %GTC by use of computed radiography (CR) mammograms. By employing breast-equivalent phantoms that are able to create breast phantom images with various combinations of fat and glandular tissue, as well as the thickness of whole breast, we determined a reference table for converting an each pixel value on CR mammography to the glandular tissue ratio. Therefore, the %GTC for individual breast was estimated by averaging glandular tissue ratio for a whole region. The clinical image data set that consisted of 49 CR mammograms were used for estimating %GTC. A paired comparison method for determining subjective ranking of the degree of breast density was employed in order to demonstrate the validity of our method. The results indicate that the average estimated %GTC was 35.0% (ranged from 12.0% to 67.0%) and they had a increased correlation with the ranking of those obtained by observer test. Therefore, it was suggested that our proposed method would be utilized for estimating the %GTC in objective manner.

AB - Measurement of a percent glandular tissue composition (%GTC) is important in terms of the estimation of individual patient exposure dose and the prediction of malignancy, and thus a number of reports for estimating %GTC by use of a mammogram have been published. In this study, we propose a method for estimating individual %GTC by use of computed radiography (CR) mammograms. By employing breast-equivalent phantoms that are able to create breast phantom images with various combinations of fat and glandular tissue, as well as the thickness of whole breast, we determined a reference table for converting an each pixel value on CR mammography to the glandular tissue ratio. Therefore, the %GTC for individual breast was estimated by averaging glandular tissue ratio for a whole region. The clinical image data set that consisted of 49 CR mammograms were used for estimating %GTC. A paired comparison method for determining subjective ranking of the degree of breast density was employed in order to demonstrate the validity of our method. The results indicate that the average estimated %GTC was 35.0% (ranged from 12.0% to 67.0%) and they had a increased correlation with the ranking of those obtained by observer test. Therefore, it was suggested that our proposed method would be utilized for estimating the %GTC in objective manner.

KW - a percent glandular tissue composition

KW - computed radiography (CR)

KW - mammography

KW - breast-equivalent phantom

KW - a percent glandular tissue composition

KW - computed radiography (CR)

KW - mammography

KW - breast-equivalent phantom

U2 - 10.6009/jjrt.67.1540

DO - 10.6009/jjrt.67.1540

M3 - Article

VL - 67

SP - 1540

EP - 1547

JO - Nippon Hoshasen Gijutsu Gakkai zasshi

JF - Nippon Hoshasen Gijutsu Gakkai zasshi

SN - 0369-4305

IS - 12

ER -