Digital mammographic imaging using microlens focusing: estimation of light collection and x-ray utilization

Nicholas Petrick; Heang-Ping Chan; Mitchell M. Goodsitt; Berkman Sahiner; Lubomir M. Hadjiiski

doi:10.1117/12.349502

28 May 1999 Digital mammographic imaging using microlens focusing: estimation of light collection and x-ray utilization

Nicholas Petrick; Heang-Ping Chan; Mitchell M. Goodsitt; Berkman Sahiner; Lubomir M. Hadjiiski

Author Affiliations +

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349502
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

Routine mammographic screening has proven to be the only reliable diagnostic method for early detection of breast cancers. The introduction of digital mammographic imaging to clinical practice should provide significant improvement in image quality and lead to better detection sensitivity. One limitation of some recently developed indirect digital imagers is a small fill factor in the photodetector. A small fill factor reduces the amount of light collected from individual x-ray interactions in the screen and can lead to an overall reduction in the number of x-ray quanta detected. At the SPIE meeting last year, we suggested using a focused microlens array between the florescent screen and photodetector as a method for improving x-ray utilization in indirect digital mammographic imaging systems. This year we have conducted a Monte Carlo simulation of a uniform field x-ray source and a digital imager. We have used this simulation tool to compare the proposed imager, which employed microlens focusing, with more standard imager configurations. The evaluation included light collection efficiency and x-ray utilization performance measure. The results indicate that including microlens focusing between the scintillation screen and the photodetector can improve light collection and increase the number of x-ray quanta detected.

Citation Download Citation

Nicholas Petrick, Nicholas Petrick, Heang-Ping Chan, Heang-Ping Chan, Mitchell M. Goodsitt, Mitchell M. Goodsitt, Berkman Sahiner, Berkman Sahiner, Lubomir M. Hadjiiski, Lubomir M. Hadjiiski, } "Digital mammographic imaging using microlens focusing: estimation of light collection and x-ray utilization", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); doi: 10.1117/12.349502; https://doi.org/10.1117/12.349502

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years