FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW)
A cone beam circular half-scan scheme is becoming an attractive imaging method in cone beam CT since it improves the temporal resolution. Traditionally, the redundant data in the circular half-scan range is weighted by a central scanning plane-dependent weighting function; FDK algorithm is then appl...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2006-01-01
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| Series: | International Journal of Biomedical Imaging |
| Online Access: | http://dx.doi.org/10.1155/IJBI/2006/83983 |
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| _version_ | 1832558983225802752 |
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| author | Dong Yang Ruola Ning |
| author_facet | Dong Yang Ruola Ning |
| author_sort | Dong Yang |
| collection | DOAJ |
| description | A cone beam circular half-scan scheme is becoming an attractive
imaging method in cone beam CT since it improves the temporal
resolution. Traditionally, the redundant data in the circular
half-scan range is weighted by a central scanning plane-dependent
weighting function; FDK algorithm is then applied on the weighted
projection data for reconstruction. However, this scheme still
suffers the attenuation coefficient drop inherited with FDK when
the cone angle becomes large. A new heuristic cone beam
geometry-dependent weighting scheme is proposed based on the idea
that there exists less redundancy for the projection data away
from the central scanning plane. The performance of FDKHSCW scheme
is evaluated by comparing it to the FDK full-scan (FDKFS) scheme
and the traditional FDK half-scan scheme with Parker's fan beam
weighting function (FDKHSFW). Computer simulation is employed and
conducted on a 3D Shepp-Logan phantom. The result illustrates a
correction of FDKHSCW to the attenuation coefficient drop in the
off-scanning plane associated with FDKFS and FDKHSFW while
maintaining the same spatial resolution. |
| format | Article |
| id | doaj-art-17d846a0dc894b4d9b80709ab69756e5 |
| institution | Kabale University |
| issn | 1687-4188 1687-4196 |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Biomedical Imaging |
| spelling | doaj-art-17d846a0dc894b4d9b80709ab69756e52025-02-03T01:31:04ZengWileyInternational Journal of Biomedical Imaging1687-41881687-41962006-01-01200610.1155/IJBI/2006/8398383983FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW)Dong Yang0Ruola Ning1Department of Imaging Sciences and Electrical & Computer Engineering, University of Rochester Medical Center, Rochester, NY 14642, USADepartment of Imaging Sciences and Electrical & Computer Engineering, University of Rochester Medical Center, Rochester, NY 14642, USAA cone beam circular half-scan scheme is becoming an attractive imaging method in cone beam CT since it improves the temporal resolution. Traditionally, the redundant data in the circular half-scan range is weighted by a central scanning plane-dependent weighting function; FDK algorithm is then applied on the weighted projection data for reconstruction. However, this scheme still suffers the attenuation coefficient drop inherited with FDK when the cone angle becomes large. A new heuristic cone beam geometry-dependent weighting scheme is proposed based on the idea that there exists less redundancy for the projection data away from the central scanning plane. The performance of FDKHSCW scheme is evaluated by comparing it to the FDK full-scan (FDKFS) scheme and the traditional FDK half-scan scheme with Parker's fan beam weighting function (FDKHSFW). Computer simulation is employed and conducted on a 3D Shepp-Logan phantom. The result illustrates a correction of FDKHSCW to the attenuation coefficient drop in the off-scanning plane associated with FDKFS and FDKHSFW while maintaining the same spatial resolution.http://dx.doi.org/10.1155/IJBI/2006/83983 |
| spellingShingle | Dong Yang Ruola Ning FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) International Journal of Biomedical Imaging |
| title | FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) |
| title_full | FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) |
| title_fullStr | FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) |
| title_full_unstemmed | FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) |
| title_short | FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW) |
| title_sort | fdk half scan with a heuristic weighting scheme on a flat panel detector based cone beam ct fdkhscw |
| url | http://dx.doi.org/10.1155/IJBI/2006/83983 |
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