A Real-time Reconstruction Method of CBCT Short Scan Based on Attenuation Compensation.
10.3969/j.issn.1671-7104.2021.03.002
- Author:
Pingping YANG
1
;
Hansheng FENG
2
;
Jiwei XU
3
;
Yang YANG
3
;
Yuntao SONG
1
Author Information
1. University of Science and Technology of China, Hefei, 230026.
2. Hefei CAS Ion Medical and Technical Devices Co. Ltd., Hefei, 230088. E-mail:hsfeng@ipp.ac.cn.
3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031.
- Publication Type:Journal Article
- Keywords:
FDK algorithm;
attenuation compensation algorithm;
real-time reconstruction;
short scan
- MeSH:
Algorithms;
Cone-Beam Computed Tomography;
Humans;
Image Processing, Computer-Assisted;
Spiral Cone-Beam Computed Tomography
- From:
Chinese Journal of Medical Instrumentation
2021;45(3):240-245
- CountryChina
- Language:Chinese
-
Abstract:
Aiming at the problem of timeliness of CBCT reconstruction, a CBCT fast short scan reconstruction method is proposed. At the same time, the image reconstruction process in which a new attenuation compensation algorithm is applied to improve image quality. When performing FDK three-dimensional reconstruction of a single-frame acquisition image, the Parker-weighted image is calculated in real time, and a new attenuation compensation algorithm is applied in the back projection process to complete the short scan Parker-weighted reconstruction. This method simulates the CBCT synchronous acquisition and reconstruction process by establishing collection and reconstruction threads. Under the premise of satisfying the reconstruction quality, the reconstruction can be completed within 1 to 2 seconds after the patient collection is completed, which achieves the purpose of real-time.
