Reference : Body contour 180 degrees pinhole SPET with or without tilted detector: a phantom study
Scientific journals : Article
Human health sciences : Radiology, nuclear medicine & imaging
http://hdl.handle.net/2268/5179
Body contour 180 degrees pinhole SPET with or without tilted detector: a phantom study
English
Seret, Alain mailto [Université de Liège - ULg > Département de physique > Imagerie médicale expérimentale >]
Flérès, David [Université de Liège - ULg > Département de physique > > 2001-2002 >]
Firket, Olivier [Hôpital Erasme - Université Libre de Bruxelles - ULB > > Service des Radioisotopes > > >]
Defrise, Michel mailto [Vrije Universiteit Brussel - VUB > Division of Nuclear Medicine > > >]
Sep-2003
European Journal of Nuclear Medicine and Molecular Imaging
Springer
30
9
1205-1210
Yes (verified by ORBi)
International
1619-7070
New York
[en] Body contour ; Pinhole ; SPET ; Pinhole SPET ; OSEM
[en] This study investigated the feasibility of ordered subsets expectation maximisation (OS-EM) reconstruction of 180 degrees pinhole single-photon emission tomography (SPET) acquired in body contour mode (variable distance between the detector and the axis of rotation for each projection) with or without a tilted detector head. Four non-circular orbits were designed bearing in mind the rotation radius and tilt angle values of previous pinhole SPET acquisitions in patients with circular orbits. The reconstructions were performed using a dedicated OS-EM algorithm. Reconstructed images of line and uniformity phantoms showed that the spatial and uniformity characteristics of the radioactive objects were preserved. In comparison with the circular orbits, the non-circular orbits allowed only a moderate gain (maximum 10%) in resolution. However, body contour pinhole SPET would significantly facilitate the camera set-up and in this way should decrease the camera set-up time, which is an important parameter in patient studies.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/5179
10.1007/s00259-003-1213-2
http:// www.springerlink.com/content/736b6c1ed2ad6gl6/?p=a9d9a4695dd8453e8fc1712c77c57246π=0
The original publication is available at www.springerlink.com
The original publication is available at www.springerlink.com. The authors thanks Springer-Verlag for allowing deposit of their final version on the ULg institutional repository.

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