Cone-beam pseudo lambda tomography under FDK framework.
- Author:
Jing HUANG
1
;
Jian-hua MA
;
Ling-jian CHEN
;
Yi-ming BI
;
Wu-fan CHEN
Author Information
1. School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China. hjing@fimmu.com
- Publication Type:Journal Article
- MeSH:
Algorithms;
Artifacts;
Cone-Beam Computed Tomography;
methods;
Humans;
Imaging, Three-Dimensional;
Models, Theoretical;
Phantoms, Imaging;
Radiographic Image Enhancement;
methods
- From:
Journal of Southern Medical University
2009;29(10):2094-2097
- CountryChina
- Language:Chinese
-
Abstract:
The medical CT scanner is rapidly evolving from the fan-beam mode to the cone-beam geometry mode. In this paper, a new cone-beam pseudo Lambda tomography was proposed based on the Noo's fan beam super-short scan formula and FDK framework. The proposed pseudo-LT algorithm, which avoids the computation of any PI line and any differential operation, has a significant practical implementation, thus leading to the images with quality improvement and reduced artifacts. The results in the simulation studies confirm the observation that the new algorithm can improve the image resolution over the traditional algorithms with noise projection data.
