Determination of imaging performance of a photostimulable phosphor system for digital mammography

James Anthony Seibert; John M. Boone; Virgil N. Cooper

doi:10.1117/12.465588

3 May 2002 Determination of imaging performance of a photostimulable phosphor system for digital mammography

James Anthony Seibert, John M. Boone, Virgil N. Cooper

Proceedings Volume 4682, Medical Imaging 2002: Physics of Medical Imaging; (2002) https://doi.org/10.1117/12.465588
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

Quantitative analysis of a prototype photostimulable phosphor system for digital mammography was performed. The pre-sampled MTF, noise power spectrum (NPS), noise equivalent quanta (NEQ), and detective quantum efficiency (DQE) were measured at 26 and 32 kVp to assess the imaging performance of a commercial computed radiography system dedicated for mammographic imaging. The pre-sampled MTF demonstrated 5 percent modulation at 8 lp/mm with a small dependence on kVp, and noise power estimates indicated x-ray quantum-limited spectral characteristics from 2 mR up to approximately 30 mR incident exposure. Maintenance of x-ray information content up to approximately 500,000 quanta/mm2 based upon NEQ measurements was demonstrated. DQE (0 mm-1) was 30-50 percent, DQE (2.5 mm-1) was 15-25 percent, and DQE (4 mm-1) was 5-15 percent, depending on kVp, incident exposure, and readout direction. A significant increase in DQE compared to previous CR mammography implementations was found. In addition to the quantitative measurements, qualitative experience suggests that CR mammography is essentially equivalent to state-of-the-art mammography screen-film detector systems.

Citation Download Citation

James Anthony Seibert, John M. Boone, and Virgil N. Cooper "Determination of imaging performance of a photostimulable phosphor system for digital mammography", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465588

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