Quality Assurance of PET Device

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Authors: Dr. Zsolt Lengyel , András Herein

 
The intent of this document is to specify measurements for evaluating performance of positron emission tomographs. The standardized measurements are suitable to compare different tomographs. They can be used during acceptance test to be sure that the tomograph has the same parameters as in vendor’s documentation.
From the following five measurements only the last one is offered by EANM (European Association of Nuclear Medicine). This one is the most complex measure, and many parameters of the picture can be saved from this measure. EANM offers to do this measure once in every year and if there was any change in the tomograph’s hardware or software. The other four measurements are rather to compare vendor’s data with the results of acceptance-test.

Table of Contents

• 1 Spatial Resolution
• 2 Scatter Fraction, Count Losses and Random Measurement
• 3 Sensitivity
• 4 Accuracy: Corrections for count losses and randoms
• 5 Image quality, accuracy of attenuation and scatter corrections

Literature

 
1. Quality Assurance for PET and PET/CT Systems, (2009) IAEA Human Health Series No. 1
2. NEMA Standards Publication NU 2-2007 Performance Measurements of Positron Emission Tomographs