Reduction of patient dose in digital mammography: simulation of low-dose image using computed radiography system and flat panel detector system

Yuki Saito; Maki Sakai; Naotoshi Fujita; Yoshie Kodera

doi:10.1117/12.2008134

6 March 2013 Reduction of patient dose in digital mammography: simulation of low-dose image using computed radiography system and flat panel detector system

Yuki Saito, Maki Sakai, Naotoshi Fujita, Yoshie Kodera

Author Affiliations +

Proceedings Volume 8668, Medical Imaging 2013: Physics of Medical Imaging; 86684K (2013) https://doi.org/10.1117/12.2008134
Event: SPIE Medical Imaging, 2013, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

To reduce the patients’ exposure, several low-dose images are necessary to obtain an image that can be used for diagnosis. However, it is clinically undesirable to expose a patient to multiple exposures in order to obtain an optimal image. The purpose of this study was to simulate a low-dose image from the image generated by a routine-dose. Images of acrylic steps were obtained using multiple doses in digital mammography to generate additional noise. The additional noise was calculated as three different noise sources. This study used the digital mammography system with different detectors. It is computed radiography (CR) system and flat panel detector (FPD) system. This noise was added to take into account the resolution of the X-ray detector using the following filters. The filters were designed based on the presampled modulation transfer function (MTF) and digital MTF containing aliasing. The image simulated using the presampled MTF filter was less similar to an actual low-dose image using the CR system. The image simulated using the digital MTF filter was closer to an actual low-dose image compared to the image simulated using the presampled MTF filter using the CR system. The image simulated using the digital MTF filter of the FPD system was similar to an actual low-dose image. By using the proposed method, we were able to obtain a simulated low-dose image from an image generated by a routine-dose.

Citation Download Citation

Yuki Saito, Maki Sakai, Naotoshi Fujita, and Yoshie Kodera "Reduction of patient dose in digital mammography: simulation of low-dose image using computed radiography system and flat panel detector system", Proc. SPIE 8668, Medical Imaging 2013: Physics of Medical Imaging, 86684K (6 March 2013); https://doi.org/10.1117/12.2008134

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