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Quantitation of clinical 3D PET studies with the ETM scatter correction

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6 Author(s)

This work compares the results of clinical studies (a H215O study with three stimulations, 2 measurements of the [18F]fluorodopa uptake in the striata and a cerebral [18F]FDG study) acquired on an ECAT 953B in the 3D mode without and with the estimation of true method (ETM) for scatter correction. Results obtained in 3D have been compared to those measured in 2D mode for the same volunteers. The results of the H215O study performed on one subject with a single activation, show that, with the ETM correction, higher activation signal are measured in 3D than in 2D. For dynamic studies such as [18F]Fluorodopa measurements, the ETM allows one to recover quantitative values of the tracer uptake comparable to those obtained in 2D. The measure of the [18F]FDG metabolism rate in 3D addresses the problem of an absolute image calibration

Published in:

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE  (Volume:3 )

Date of Conference:

21-28 Oct 1995