DocumentCode :
1706372
Title :
Preliminary studies of a micro-CT for a combined small animal PET/CT scanner
Author :
Khodaverdi, M. ; Pauly, F. ; Weber, S. ; Schröder, G. ; Ziemons, K. ; Sievering, R. ; Halling, H.
Author_Institution :
Zentralabteilung fur Technologie, Forschungszentrum Julich GmbH, Germany
Volume :
3
fYear :
2001
Firstpage :
1605
Abstract :
We are developing an X-ray computed tomography (CT) system which will be combined with a high resolution animal PET system. This permits acquisition of both molecular and anatomical images in a single machine. In particular the CT will also be utilized for the quantification of the animal PET data by providing accurate data for attenuation correction. A first prototype has been built using a commercially available plane silicon diode detector. A cone-beam reconstruction provides the images using the Feldkamp algorithm. First measurements with this system have been performed on a mouse. It could be shown that the CT setup fulfils all demands for a high quality image of the skeleton of the mouse. It is also suited for soft tissue measurements. To improve contrast and resolution and to acquire the X-ray energy further development of the system, especially the use of semiconductor detectors and iterative reconstruction algorithms are planned.
Keywords :
biological techniques; computerised tomography; positron emission tomography; silicon radiation detectors; Feldkamp algorithm; PET/CT scanner; Si diode detector; X-ray computed tomography; attenuation correction; cone-beam reconstruction; contrast; iterative reconstruction algorithms; resolution; small animal; soft tissue; Animals; Attenuation; Computed tomography; Envelope detectors; Image reconstruction; Mice; Positron emission tomography; Prototypes; Silicon; X-ray imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
ISSN :
1082-3654
Print_ISBN :
0-7803-7324-3
Type :
conf
DOI :
10.1109/NSSMIC.2001.1008647
Filename :
1008647
Link To Document :
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