Implementation and evaluation of the half-scan scheme based on CBCT (cone-beam CT) system

Dong Yang; Ruola Ning; Yong Yu; David Conover; Xianghua Lu

doi:10.1117/12.536008

6 May 2004 Implementation and evaluation of the half-scan scheme based on CBCT (cone-beam CT) system

Dong Yang, Ruola Ning, Yong Yu, David Conover, Xianghua Lu

Proceedings Volume 5368, Medical Imaging 2004: Physics of Medical Imaging; (2004) https://doi.org/10.1117/12.536008
Event: Medical Imaging 2004, 2004, San Diego, California, United States

Abstract

A modified Feldkamp (FDK) 3-D cone beam algorithm was developed to conduct the half-scan scheme on a flat panel detector (FPD)-based prototype CBCT system which is available in our Lab. X-ray source scans the object in a circular trajectory in the range of 180 degrees plus full cone angle rather than 360 degrees for a full scan. The redundant data is weighted by a weighting function in 3-D case based on the ones proposed by Parker1, FDK algorithm is then adopted to get the reconstruction image. The breast phantom and breast specimen are used in the experiment and the objects reconstructed from half-scan CBCT are compared with those reconstructed from full scan. The applicability of the half-scan scheme is testified in terms of image noise level, contrast resolution. The half-scan scheme is expected to improve the temporal resolution and may also reduce the patients’ X-ray dose level. The result showed an encouraging potential usage of the Half-scan CBCT in the functional 4-D CT imaging.

Citation Download Citation

Dong Yang, Ruola Ning, Yong Yu, David Conover, and Xianghua Lu "Implementation and evaluation of the half-scan scheme based on CBCT (cone-beam CT) system", Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); https://doi.org/10.1117/12.536008

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