Share Email Print
cover

Proceedings Paper

Towards determination of individual glandular dose
Author(s): Hannie Förnvik; Pontus Timberg; Magnus Dustler; Daniel Förnvik; Sophia Zackrisson; Anders Tingberg
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Due to variations in amount and distribution of glandular breast tissue among women, the mean glandular dose (MGD) can be a poor measure of the individual glandular dose. Therefore, to improve the basis for risk assessment related to radiation dose from breast X-ray examinations, the distribution should be considered. Breast tomosynthesis (BT) is an imaging technique that may be used as an alternative or complement to standard mammography in breast cancer screening, and it could provide the required 3D-localisation of glandular tissue for estimation of the individual glandular dose. In this study, we investigated the possibility to localize glandular tissue from BT data and use a Monte Carlo simulation routine to estimate the glandular dose for software breast phantoms with different amount and distribution of glandular breast tissue. As an initial evaluation of the method, the local energy absorption in glandular tissue was estimated for seven breast phantoms and the corresponding phantoms recreated from reconstructed BT data. As expected, the normalized glandular dose was found to differ substantially with glandular distribution. This emphasizes the importance of glandular tissue localization for estimation of the individual glandular dose. The results showed good accuracy for estimation of normalized glandular dose using breast phantoms recreated from reconstructed BT image volumes (relative differences between –7.3% and +9.5%). Following this initial study, the method will be evaluated for more phantoms and potentially developed for patient cases. In the future it could become a useful tool in breast dosimetry as a step towards the individual glandular dose.

Paper Details

Date Published: 9 March 2018
PDF: 7 pages
Proc. SPIE 10573, Medical Imaging 2018: Physics of Medical Imaging, 1057304 (9 March 2018); doi: 10.1117/12.2293454
Show Author Affiliations
Hannie Förnvik, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)
Pontus Timberg, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)
Magnus Dustler, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)
Daniel Förnvik, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)
Sophia Zackrisson, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)
Anders Tingberg, Lund Univ., Skåne Univ. Hospital Malmö (Sweden)


Published in SPIE Proceedings Vol. 10573:
Medical Imaging 2018: Physics of Medical Imaging
Joseph Y. Lo; Taly Gilat Schmidt; Guang-Hong Chen, Editor(s)

© SPIE. Terms of Use
Back to Top