Reference : 180 degrees Pinhole SPET with a tilted detector and OS-EM reconstruction: phantom stu...
Scientific journals : Article
Human health sciences : Radiology, nuclear medicine & imaging
http://hdl.handle.net/2268/7251
180 degrees Pinhole SPET with a tilted detector and OS-EM reconstruction: phantom studies and potential clinical applications
English
Seret, Alain mailto [Université de Liège - ULg > Département de physique > Imagerie médicale expérimentale >]
Defrise, Michel mailto [Vrije Universiteit Brussel - VUB > Division of Nuclear Medicine > > >]
Blocklet, Didier mailto [Hôpital Erasme - Université Libre de Bruxelles - ULB > > Service des Radioisotopes > >]
Dec-2001
European Journal of Nuclear Medicine
Springer-Verlag
28
12
1836-1841
Yes (verified by ORBi)
International
0340-6997
New York
[en] Pinhole ; Single photon emission tomography ; SPECT ; Pinhole-SPECT ; Reconstruction ; OSEM
[en] This study investigated the feasibility of ordered subsets expectation maximisation (OS-EM) reconstruction of pinhole single-photon emission tomography (SPET) acquired with a tilted detector head and a 180 degrees orbit. Phantom and patient data were recorded using a standard single-head camera. Reconstructions were performed using a dedicated OS-EM algorithm. Reconstructed images of line, uniformity and Picker's thyroid phantoms showed that the geometry, physical size and uniformity of the radioactive objects were preserved. For the range of radius corresponding to the patient studies, the measured full-widths at half-maximum lay between 4.90+/-0.25 mm and 6.05+/-0.25 mm. Finally, the gain in resolution associated with the use of the pinhole collimator instead of a parallel-hole collimator was highlighted in a parathyroid exploration and in a shoulder bone study.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/7251
10.1007/s002590100629
http://springerlink.metapress.com/content/ff7er6dlm2twf0w9/?p=8e128690cf1d46a2ae4800f790f057dc&pi=0
The original publication is available at www.springerlink.com
The original publication is available at www.springerlink.com. The authors thank Springer-Verlag for allowing deposit of their final version on the ULg institutional repository.

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