Research

Cone-beam CT using motion-compensated algebraic reconstruction methods with limited data


Reference:

Pengpan, T., Qiu, W., Smith, N. D. and Soleimani, M., 2012. Cone-beam CT using motion-compensated algebraic reconstruction methods with limited data. Computer Methods and Programs in Biomedicine, 105 (3), pp. 246-256.

Related documents:

This repository does not currently have the full-text of this item.
You may be able to access a copy if URLs are provided below. (Contact Author)

Official URL:

http://dx.doi.org/10.1016/j.cmpb.2011.09.007

Abstract

Cone Beam Computed Tomography (CBCT) is widely used in radiation therapy for verifying treatment areas, since it provides three-dimensional image reconstruction of those tumour regions under inspection. However, organ motion is problematic during the scanning process, it causes motion artefacts on the CBCT image and can lead to mispositioning for the subsequent treatment. Moreover, patient dose is also considerable and there is a need for methods which yield acceptable image quality with as few X-ray images as possible. Although methods have been developed to handle limited projection data, such as the Algebraic Reconstruction Technique (ART); Simultaneous ART (SART); and Ordered-Subset SART (OS-SART), this study applied motion compensation to these reconstruction techniques. Root Mean Square Error (RMSE) of image is calculated to study the convergence of reconstructed images compared with the truth image. When motion was applied to a phantom and the motion compensation was used to account for the motion, the results showed that motion compensation improved the quality of CBCT image, when compared to uncompensated images. Furthermore, the experiments suggested that minimising phase error, for breathing models, was more important than minimising amplitude error.

Details

Item Type Articles
CreatorsPengpan, T., Qiu, W., Smith, N. D. and Soleimani, M.
DOI10.1016/j.cmpb.2011.09.007
DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
RefereedYes
StatusPublished
ID Code24934

Export

Actions (login required)

View Item