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 language | English |
|---|---|
| Title of host publication | IFMBE Proceedings |
| Publisher | Springer Verlag |
| Pages | 1541-1545 |
| Number of pages | 5 |
| Volume | 14 |
| Edition | 1 |
| Publication status | Published - 2007 |
| Event | 10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 - Seoul, Korea, Republic of Duration: Aug 27 2006 → Sep 1 2006 |
Other
| Other | 10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 |
|---|---|
| Country | Korea, Republic of |
| City | Seoul |
| Period | 8/27/06 → 9/1/06 |
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Keywords
- Average glandular dose
- Breast density
- Compressed breast thickness
- Computed radiography
- Mammography
ASJC Scopus subject areas
- Biomedical Engineering
- Bioengineering
Cite this
Analysis of influence of digital mammography on the individual average glandular dose against screen-film system. / Azuma, Yoshiharu; Goto, Sachiko; Sumimoto, T.; Takeda, Yoshihiro.
IFMBE Proceedings. Vol. 14 1. ed. Springer Verlag, 2007. p. 1541-1545.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Analysis of influence of digital mammography on the individual average glandular dose against screen-film system
AU - Azuma, Yoshiharu
AU - Goto, Sachiko
AU - Sumimoto, T.
AU - Takeda, Yoshihiro
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
KW - Average glandular dose
KW - Breast density
KW - Compressed breast thickness
KW - Computed radiography
KW - Mammography
UR - http://www.scopus.com/inward/record.url?scp=84958260042&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84958260042&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84958260042
VL - 14
SP - 1541
EP - 1545
BT - IFMBE Proceedings
PB - Springer Verlag
ER -