Preliminary study on optimization of the stationary inverse-geometry digital tomosynthesis: x-ray source array

Burnyoung Kim; Jisoo Eom; Wonhyung Kim; Seungwan Lee

doi:10.1117/12.2512356

1 March 2019 Preliminary study on optimization of the stationary inverse-geometry digital tomosynthesis: x-ray source array

Burnyoung Kim, Jisoo Eom, Wonhyung Kim, Seungwan Lee

Author Affiliations +

Proceedings Volume 10948, Medical Imaging 2019: Physics of Medical Imaging; 109485D (2019) https://doi.org/10.1117/12.2512356
Event: SPIE Medical Imaging, 2019, San Diego, California, United States

Abstract

Digital tomosynthesis (DT) improves the diagnostic accuracy compared with 2D radiography due to the good depth resolution. In addition, the DT can reduce radiation dose by more than 80% compared to computed tomography (CT) owing to the scans with limited angles. However, the conventional DT systems have the disadvantages such as geometric complexity and low efficiency. Moreover, the movements of source and detector cause motion artifacts in reconstructed images. Therefore, with the stationary X-ray source and detector, it is possible to reduce the artifacts by simplifying the geometry while preserving the advantages of DT imaging. Also, the geometric inversion with a small detector allows the more efficient diagnosis because fields-of-view (FOVs) can be smaller than the conventional DT systems. The purpose of this study was to develop the stationary inverse-geometry digital tomosynthesis (s-IGDT) imaging technique and compare image quality for linear and curved X-ray source arrays. The signal-to-noise ratio (SNR) of s-IGDT images obtained by using the linear X-ray source array was averagely 1.84 times higher than that using the curved X-ray source array due to low noise components, but the root-mean-square error (RMSE) was averagely 3.25 times higher. The modulation-transfer function (MTF) and radiation dose of the s-IGDT systems with the linear and curved X-ray source arrays were measured at similar levels. As a result, the s-IGDT system with the linear X-ray source array is superior in terms of SNR and noise property, and the curved X-ray array system is superior in terms of quantitative accuracy.

Citation Download Citation

Burnyoung Kim, Jisoo Eom, Wonhyung Kim, and Seungwan Lee "Preliminary study on optimization of the stationary inverse-geometry digital tomosynthesis: x-ray source array", Proc. SPIE 10948, Medical Imaging 2019: Physics of Medical Imaging, 109485D (1 March 2019); https://doi.org/10.1117/12.2512356

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
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

X-ray sources

Data corrections

Image quality

X-rays

CT reconstruction

Imaging systems

Systems modeling

Keywords/Phrases

Search In:

Publication Years