PMID- 22635171
OWN - NLM
STAT- MEDLINE
DCOM- 20120918
LR  - 20151119
IS  - 1095-9114 (Electronic)
IS  - 0895-3996 (Linking)
VI  - 20
IP  - 2
DP  - 2012
TI  - Correlation and support vector machine based motion artifacts mitigation in 3D 
      computer tomography.
PG  - 141-60
LID - 10.3233/XST-2012-0325 [doi]
AB  - Head motion during Computer Tomographic (CT) studies can adversely affects the 
      reconstructed image through distortion and other artifacts such as blurring and 
      doubling, thereby contributing to misdiagnosis of diseases. In this paper, we 
      propose a method to detect and mitigate motion artifacts in three-dimensional 
      (3D) cone-beam CT system. Motion detection is achieved by comparing the 
      correlation coefficient between the adjacent x-ray projections. Artifacts, caused 
      by motion, are mitigated either by replacing motion corrupted projections with 
      their counterpart 180 degrees  apart projections under certain conditions, or by 
      estimating motion corrupted projections using Least Square Support Vector Machine 
      (LS-SVM) based time series prediction. The method has been evaluated on 3D 
      Shepp-Logan phantom. In this research, Feldkamp-David-Kress (FDK) based 
      back-projection algorithm is used for 3D reconstruction process. Computer 
      simulation validates the motion detection and artifacts elimination mechanism.
FAU - Bhowmik, Ujjal Kumar
AU  - Bhowmik UK
AD  - Department of Electrical and Computer Engineering, University of Alabama, 
      Huntsville, AL 35899, USA. ukb0001@uah.edu
FAU - Adhami, Reza R
AU  - Adhami RR
LA  - eng
PT  - Journal Article
PL  - Netherlands
TA  - J Xray Sci Technol
JT  - Journal of X-ray science and technology
JID - 9000080
SB  - IM
EIN - J Xray Sci Technol. 2012;20(3):383
MH  - Algorithms
MH  - *Artifacts
MH  - Computer Simulation
MH  - Cone-Beam Computed Tomography/instrumentation/*methods
MH  - Head Movements
MH  - Humans
MH  - Imaging, Three-Dimensional/*methods
MH  - Models, Biological
MH  - Phantoms, Imaging
MH  - Reproducibility of Results
MH  - *Support Vector Machine
EDAT- 2012/05/29 06:00
MHDA- 2012/09/19 06:00
CRDT- 2012/05/29 06:00
PHST- 2012/05/29 06:00 [entrez]
PHST- 2012/05/29 06:00 [pubmed]
PHST- 2012/09/19 06:00 [medline]
AID - H56H74P77U42H571 [pii]
AID - 10.3233/XST-2012-0325 [doi]
PST - ppublish
SO  - J Xray Sci Technol. 2012;20(2):141-60. doi: 10.3233/XST-2012-0325.