2016_Imaging for Physicists

Dead Time Correction

 Measurement of dead time with ‘decaying source’ ● Uniform source ( 18 F, 11 C) of known activitiy ● Measurements of singles, prompt and random coincidence rates  Construction of look-up tables for dead time correction factors

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(a) Effect of dead time on count rate linearity. (b) Effect of shortening the signal integration time (from [2]).

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ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring