Koninklijke Philips Corporation N.v.

Sharon Xiarong Wang

Thomas Leroy Laurence

A positron emission tomography (PET) apparatus and method employs a plurality of radiation detectors () disposed around an imaging region () and configured to detect 511 keV radiation events emanating from the imaging region. A calibration phantom is disposed in the imaging region. One or more processors are configured to: acquire and store listmode data of the phantom; measure a random rate for each line of response (LOR) from the listmode data using a coincident 511 keV events detector () with a time offset (); determine a singles rate for each detector pixel from the random event rate, for example via a histogram plotting singles rate for each detector pixel; compute a live time factor of each LOR; compute a dead time correction factor as the reciprocal of the live time factor; and correct images according to the dead time correction factor.

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Highland Heights, OH, United States of America

Sharon Xiarong Wang