A method to measure the presampling MTF in digital radiography using Wiener deconvolution

Zhongxing Zhou; Qingzhen Zhu; Feng Gao; Huijuan Zhao; Lixin Zhang; Guohui Li

doi:10.1117/12.2000580

13 March 2013 A method to measure the presampling MTF in digital radiography using Wiener deconvolution

Zhongxing Zhou, Qingzhen Zhu, Feng Gao, Huijuan Zhao, Lixin Zhang, Guohui Li

Proceedings Volume 8573, Design and Quality for Biomedical Technologies VI; 85730R (2013) https://doi.org/10.1117/12.2000580
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

We developed a novel method for determining the presampling modulation transfer function (MTF) of digital radiography systems from slanted edge images based on Wiener deconvolution. The degraded supersampled edge spread function (ESF) was obtained from simulated slanted edge images with known MTF in the presence of poisson noise, and its corresponding ideal ESF without degration was constructed according to its central edge position. To meet the requirements of the absolute integrable condition of Fourier transformation, the origianl ESFs were mirrored to construct the symmetric pattern of ESFs. Then based on Wiener deconvolution technique, the supersampled line spread function (LSF) could be acquired from the symmetric pattern of degraded supersampled ESFs in the presence of ideal symmetric ESFs and system noise. The MTF is then the normalized magnitude of the Fourier transform of the LSF. The determined MTF showed a strong agreement with the theoritical true MTF when appropriated Wiener parameter was chosen. The effects of Wiener parameter value and the width of square-like wave peak in symmetric ESFs were illustrated and discussed. In conclusion, an accurate and simple method to measure the presampling MTF was established using Wiener deconvolution technique according to slanted edge images.

Citation Download Citation

Zhongxing Zhou, Qingzhen Zhu, Feng Gao, Huijuan Zhao, Lixin Zhang, and Guohui Li "A method to measure the presampling MTF in digital radiography using Wiener deconvolution", Proc. SPIE 8573, Design and Quality for Biomedical Technologies VI, 85730R (13 March 2013); https://doi.org/10.1117/12.2000580

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Modulation transfer functions

Deconvolution

Fourier transforms

Radiography

Imaging systems

Interference (communication)

Sensors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years