Dose and image quality measurements for contrast-enhanced dual energy mammography systems

J. M. Oduko; P. Homolka; V. Jones; D. Whitwam

doi:10.1117/12.2082517

18 March 2015 Dose and image quality measurements for contrast-enhanced dual energy mammography systems

J. M. Oduko, P. Homolka, V. Jones, D. Whitwam

Proceedings Volume 9412, Medical Imaging 2015: Physics of Medical Imaging; 94125I (2015) https://doi.org/10.1117/12.2082517
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

The results of patient dose surveys of two contrast-enhanced dual energy mammography systems are presented, showing mean glandular doses for both low and high energy components of the exposures. For one system the distribution of doses is of an unusual pattern, very different from that normally measured in patient dose surveys. The contribution of the high energy component of the exposure to the total is shown to be about 20% of that of the low energy component for this system. It is about 33% for the other system, for which the distribution of doses is similar to previously published surveys . A phantom containing disks with a range of different iodine content was used, with tissue-equivalent materials, to investigate the properties of one dual energy system. The iodine signal difference to noise ratio is suggested as a measure of image quality. It was found to remain practically constant as phantom thickness was varied, and increased only slowly (with a power relationship) as air kerma increased. Other measurements showed good reproducibility of the iodine signal difference, and that it was proportional to iodine concentration in the phantom. The iodine signal difference was found to be practically the same for a wide range of phantom thickness and glandularity.

Citation Download Citation

J. M. Oduko, P. Homolka, V. Jones, and D. Whitwam "Dose and image quality measurements for contrast-enhanced dual energy mammography systems", Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 94125I (18 March 2015); https://doi.org/10.1117/12.2082517

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available