Experimental evaluation of low-resolution CT regulated tomosynthesis using a flat-panel detector

Kai Zeng; Hengyong Yu; Michael Grasruck; Bernhard Schmidt; Ge Wang

doi:10.1117/12.683053

7 September 2006 Experimental evaluation of low-resolution CT regulated tomosynthesis using a flat-panel detector

Kai Zeng, Hengyong Yu, Michael Grasruck, Bernhard Schmidt, Ge Wang

Proceedings Volume 6318, Developments in X-Ray Tomography V; 63181X (2006) https://doi.org/10.1117/12.683053
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Tomosynthesis is a technique for reconstructing a 3D object from projection data collected within a limited-angular scanning range. In this paper, we describe and evaluate a methodology for reconstructing a region of interest (ROI) by combining a global low-resolution CT scan and a local high-resolution tomosynthetic scan. First, a low-resolution CT scan is acquired. Then, a high-resolution tomosynthetic scan is performed with respect to the ROI. Finally, the ROI is reconstructed from these two datasets. Our tomosynthetic algorithm is evaluated on a state-of-the-art flat-panel detector based CT system using a standard CT performance phantom. The experimental results demonstrate that our modality fusion approach effectively eliminates the interference from surrounding structures and minimizes the shading problem, as compared to the tomosynthetic results obtained without utilizing the low-resolution CT scan. In conclusion, our approach provides better ROI reconstruction than tomosynthesis, and uses lower dose than CT. Hence, it may be used for temporal bone imaging, etc.

Citation Download Citation

Kai Zeng, Hengyong Yu, Michael Grasruck, Bernhard Schmidt, and Ge Wang "Experimental evaluation of low-resolution CT regulated tomosynthesis using a flat-panel detector", Proc. SPIE 6318, Developments in X-Ray Tomography V, 63181X (7 September 2006); https://doi.org/10.1117/12.683053

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
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Computed tomography

Sensors

Expectation maximization algorithms

Reconstruction algorithms

Detection and tracking algorithms

Data acquisition

Spatial resolution

Show All Keywords

Keywords/Phrases

Search In:

Publication Years