Comparison study of dual-energy techniques in chest radiography

Minjae Lee; Donghoon Lee; Hyemi Kim; Sunghoon Choi; Dohyeon Kim; Hee-Joung Kim

doi:10.1117/12.2511131

1 March 2019 Comparison study of dual-energy techniques in chest radiography

Minjae Lee, Donghoon Lee, Hyemi Kim, Sunghoon Choi, Dohyeon Kim, Hee-Joung Kim

Proceedings Volume 10948, Medical Imaging 2019: Physics of Medical Imaging; 109481E (2019) https://doi.org/10.1117/12.2511131
Event: SPIE Medical Imaging, 2019, San Diego, California, United States

Abstract

Dual-energy (DE) technology is useful in chest radiography because it can separate anatomical structures such as bone and soft tissue. The standard log subtraction (SLS), simple smoothing of the high-energy image (SSH), anti-correlated noise reduction (ACNR), and a general linear noise reduction algorithm (GLNR) are used as conventional DE techniques to separate bone and soft tissue. However, conventional DE techniques cannot accurately decompose the anatomical structures because these techniques are based on the assumptions that X-ray imaging is a linear relationship. This relationship can cause quantum noise as well as anatomical loss of normal tissue and difficulty in detecting lesions. In this study, we propose a non-linear DE technique which requires a step to calculate the coefficient in advance using a calibration phantom. The calibration phantom composed to aluminum and PMMA material to calculate non-linear coefficients using the quadratic fitting model for soft tissue and bone. The results demonstrated that a non-linear DE technique showed the higher contrast-to-noise ratio (CNR), signal to noise ratio (SNR) and figure of merit (FOM) at 60 /70 kVp and 130 kVp. In addition, it showed better performance and image quality than conventional DE technique in terms of material decomposition capability. In conclusion, a non-linear DE technique is expected to increase the diagnostic accuracy in chest radiography.

Conference Presentation

Citation Download Citation

Minjae Lee, Donghoon Lee, Hyemi Kim, Sunghoon Choi, Dohyeon Kim, and Hee-Joung Kim "Comparison study of dual-energy techniques in chest radiography", Proc. SPIE 10948, Medical Imaging 2019: Physics of Medical Imaging, 109481E (1 March 2019); https://doi.org/10.1117/12.2511131

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