Low-dose x-ray imaging GLG: restoration by Kalman filter

Reza A. Zoroofi; Shinichi Tamura; Yoshinobu Sato; Yuji Ogata; Kazuo Inamoto; Shinji Shimojo

doi:10.1117/12.339184

12 February 1999 Low-dose x-ray imaging GLG: restoration by Kalman filter

Reza A. Zoroofi, Shinichi Tamura, Yoshinobu Sato, Yuji Ogata, Kazuo Inamoto, Shinji Shimojo

Proceedings Volume 3567, Optical and Imaging Techniques for Biomonitoring IV; (1999) https://doi.org/10.1117/12.339184
Event: BiOS Europe '98, 1998, Stockholm, Sweden

Abstract

The present study was designed to monitor novel ideas in the acquisition and manipulation of data in an X-ray imaging system. A grid was sandwiched between two cascaded imaging plates (Ips). Using a fan-beam X-ray tube and a single exposure scheme, the two Ips, respectively, recorded gridless and grid (GLG) type information of the object. Referring to the mathematical model of the GLG technique, it was explained that the collected data associated with the gridless IP was of high (S/N) and suppressed scattered components. Based on this assumption and using a Gaussian convolution kernel representing the effect of scattering, a technique was proposed to estimate scatter parameters of the GLG plates. Then, a Kalman filter was developed to restore noisy blurred images of the GLG techniques using the Ips data and estimated parameters. The results are shown for both the computer simulated and real X-ray phantom data.

Citation Download Citation

Reza A. Zoroofi, Shinichi Tamura, Yoshinobu Sato, Yuji Ogata, Kazuo Inamoto, and Shinji Shimojo "Low-dose x-ray imaging GLG: restoration by Kalman filter", Proc. SPIE 3567, Optical and Imaging Techniques for Biomonitoring IV, (12 February 1999); https://doi.org/10.1117/12.339184

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