Task-based comparative study of iterative image reconstruction methods for limited-angle x-ray tomography

Rongping Zeng; Kyle J. Myers

doi:10.1117/12.878098

16 March 2011 Task-based comparative study of iterative image reconstruction methods for limited-angle x-ray tomography

Rongping Zeng, Kyle J. Myers

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 796137 (2011) https://doi.org/10.1117/12.878098
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

For tomography that has available only projection views from a limited angular span, such as is the case in an x-ray tomosynthesis system, the image reconstruction problem is ill-posed. Reconstruction methods play an important role in optimizing the image quality for human interpretation. In this work we compare three popular iterative image reconstruction methods that have been applied to digital tomosynthesis systems: the simultaneous algebraic reconstruction technique (SART), the maximum-likelihood (ML) and the total-variation regularized least-square reconstruction method (TVLS). Quality of the images reconstructed from these three methods is assessed through task-based performance. Two tasks are considered in this work: lesion detection and shape discrimination. Area under the ROC curve (AUC) is used as the figure-of-merit. Our simulation results indicate that TVLS and SART perform very similarly and better than the ML in terms of lesion detectability, while the ML performs better than the other two in terms of shape discrimination ability.

Citation Download Citation

Rongping Zeng and Kyle J. Myers "Task-based comparative study of iterative image reconstruction methods for limited-angle x-ray tomography", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 796137 (16 March 2011); https://doi.org/10.1117/12.878098

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