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A multi-centre evaluation of eleven clinically feasible brain PET/MRI attenuation correction techniques using a large cohort of patients.


ABSTRACT:

SUBMITTER: Ladefoged CN 

PROVIDER: S-EPMC6818242 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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<h4>Aim</h4>To accurately quantify the radioactivity concentration measured by PET, emission data need to be corrected for photon attenuation; however, the MRI signal cannot easily be converted into attenuation values, making attenuation correction (AC) in PET/MRI challenging. In order to further improve the current vendor-implemented MR-AC methods for absolute quantification, a number of prototype methods have been proposed in the literature. These can be categorized into three types: template/  ...[more]

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