Determination of the exact reconstruction region in the cone-beam composite-circling mode

Lena Ye; Hengyong Yu; Ge Wang

doi:10.1117/12.791284

15 September 2008 Determination of the exact reconstruction region in the cone-beam composite-circling mode

Lena Ye, Hengyong Yu, Ge Wang

Proceedings Volume 7078, Developments in X-Ray Tomography VI; 70780J (2008) https://doi.org/10.1117/12.791284
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

In the cone-beam composite-circling mode, the trajectory is composited by two circular motions. An x-ray focal spot within an x-ray source is rotated at constant or variable speeds on a plane facing a short object to be reconstructed, while the x-ray tube is rotated around the object on the gantry plane. In this paper, we describe an algorithm for determining the boundary surface of the region for PI-line-based exact reconstruction using composite-circling curves. Such an exact reconstruction region consists of all PI-segments on the scanning curve. For different combinations of scanning parameters, we find the radius of the largest sphere centered at the origin that can be embedded in the region. The exact reconstruction region is found to be the largest, reaching the radius of the focal spot circling facing the object, when the ratio of the focal spot circling frequency to the x-ray tube rotation frequency is two. The numerical results are also compared with those of standard saddle curves.

Citation Download Citation

Lena Ye, Hengyong Yu, and Ge Wang "Determination of the exact reconstruction region in the cone-beam composite-circling mode", Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70780J (15 September 2008); https://doi.org/10.1117/12.791284

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