Improvements of FDK-type helical cone-beam CT imaging
This thesis presents the author's research work on the FDK-type CT imaging algorithms for 3D cone-beam CT scanner. The modern FDK-type algorithms suffer from two main limitations of the data collection: the cone-shaped projection volume and the helical scanning pitch. Once the cone-beam angle b...
Saved in:
Main Author: | |
---|---|
Other Authors: | |
Format: | Theses and Dissertations |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/14265 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-14265 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-142652023-07-04T16:57:08Z Improvements of FDK-type helical cone-beam CT imaging Liang, Hong Zhu Zhang Cishen School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics This thesis presents the author's research work on the FDK-type CT imaging algorithms for 3D cone-beam CT scanner. The modern FDK-type algorithms suffer from two main limitations of the data collection: the cone-shaped projection volume and the helical scanning pitch. Once the cone-beam angle becomes relatively large or the helical scanning is relatively fast, the artifacts would unavoidably appear on the images reconstructed by the existing FDK-type algorithms. On the other hand, the FDK-type approximate reconstruction accuracy is to be improved if compared with the 3D exact reconstruction. The research work presented in this thesis is on the development of new FDK-type reconstruction algorithms. Author’s efforts are mainly on the improvements of approximate reconstruction geometry and the incorporation with the 3D exact reconstruction. New methods can produce images with improved quality and better reconstruction efficiency. DOCTOR OF PHILOSOPHY (EEE) 2008-11-12T05:56:50Z 2008-11-12T05:56:50Z 2007 2007 Thesis Liang, H. Z. (2007). Improvements of FDK-type helical cone-beam CT imaging. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/14265 10.32657/10356/14265 en 161 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics |
spellingShingle |
DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics Liang, Hong Zhu Improvements of FDK-type helical cone-beam CT imaging |
description |
This thesis presents the author's research work on the FDK-type CT imaging algorithms for 3D cone-beam CT scanner. The modern FDK-type algorithms suffer from two main limitations of the data collection: the cone-shaped projection volume and the helical scanning pitch. Once the cone-beam angle becomes relatively large or the helical scanning is relatively fast, the artifacts would unavoidably appear on the images reconstructed by the existing FDK-type algorithms. On the other hand, the FDK-type approximate reconstruction accuracy is to be improved if compared with the 3D exact reconstruction. The research work presented in this thesis is on the development of new FDK-type reconstruction algorithms. Author’s efforts are mainly on the improvements of approximate reconstruction geometry and the incorporation with the 3D exact reconstruction. New methods can produce images with improved quality and better reconstruction efficiency. |
author2 |
Zhang Cishen |
author_facet |
Zhang Cishen Liang, Hong Zhu |
format |
Theses and Dissertations |
author |
Liang, Hong Zhu |
author_sort |
Liang, Hong Zhu |
title |
Improvements of FDK-type helical cone-beam CT imaging |
title_short |
Improvements of FDK-type helical cone-beam CT imaging |
title_full |
Improvements of FDK-type helical cone-beam CT imaging |
title_fullStr |
Improvements of FDK-type helical cone-beam CT imaging |
title_full_unstemmed |
Improvements of FDK-type helical cone-beam CT imaging |
title_sort |
improvements of fdk-type helical cone-beam ct imaging |
publishDate |
2008 |
url |
https://hdl.handle.net/10356/14265 |
_version_ |
1772828706678505472 |