Supersampling in PET. A concept for improvement of the resolution of positron emission tomography

Jørgen Erik Assentoft, Jesper Skovhus Thomsen, Arne Andreasen

Research output: Contribution to journalConference article in JournalResearchpeer-review

2 Citations (Scopus)

Abstract

At present, the maximum spatial resolution of state-of-the-art PET scanners is not better than 5 mm, whereas the maximum resolution obtained in the resulting images is approximately 10 mm. At least some of this difference is a result of an inherent, complex noise component that can be eliminated using "supersampling". The aim of the study was to apply the supersampling technique to PET image recordings to lower the noise and to improve the in-plane resolution of the recorded images. A standardized phantom was investigated with the supersampling technique. In addition to the standard CT and PET series, 14 further PET series were recorded with the phantom at exactly the same position, and 4 further series were recorded with the phantom placed in another well defined position. After merging corresponding images, the image noise index and the image resolution are both substantially improved. The suggested PET image recording and processing technique provides a substantial increase in PET image quality without exposing the patient to any additional radiation, and might therefore become a powerful tool for investigative as well as diagnostic purposes.
Original languageEnglish
JournalConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
Volume1
Pages (from-to)3622-5
Number of pages4
ISSN1557-170X
DOIs
Publication statusPublished - 1 Jan 2010
Externally publishedYes
Event32nd Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society - Buenos Aires
Duration: 31 Aug 20104 Sept 2010

Conference

Conference32nd Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society
CityBuenos Aires
Period31/08/201004/09/2010

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