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
Body contour 180 degrees pinhole SPET with or without tilted detector: a phantom study
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 > > >]
European Journal of Nuclear Medicine and Molecular Imaging
Yes (verified by ORBi)
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
The original publication is available at
The original publication is available at The authors thanks Springer-Verlag for allowing deposit of their final version on the ULg institutional repository.

File(s) associated to this reference

Fulltext file(s):

Open access
Seret_A_2003_Eur j nucl med mol imag_30_9_1205.pdfNo commentaryAuthor postprint326.99 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.