Reconstruction of attenuation maps for a PET/MR scanner based on the LSO background activity

T. Kaltsas, L. Caldeira, J. Scheins, L. Tellmann, E. Rota Kops, N. J. Shah, C. Lerche

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

1 Citation (Scopus)


The majority of all modern PET cameras use LSO and LYSO crystals which contain a small proportion of the radioactive isotope of Lutetium. The aim of this study is to obtain attenuation maps for dedicated head PET/MR scanners based on the background activity of the LSO scintillator. In particular, attenuation maps for the Tx/Rx coils in the PET Field of View have to be provided. Before reconstructing such an attenuation map, the scanners stability with respect to detector temperature and background count rate was examined. First image reconstructions of the 8-channel Tx/Rx head coil and a 3-rod phantom obtained with LSO background prove that the method is feasible as long as the overall scan time is sufficiently long.

Original languageEnglish
Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2015)
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)9781467398626
ISBN (Print)9781467398633
Publication statusPublished - 2015
Externally publishedYes
EventIEEE Nuclear Science Symposium and Medical Imaging Conference 2015 - San Diego, United States of America
Duration: 31 Oct 20157 Nov 2015


ConferenceIEEE Nuclear Science Symposium and Medical Imaging Conference 2015
Abbreviated titleNSS/MIC 2015
CountryUnited States of America
CitySan Diego

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