Author/Authors :
Scraggs، نويسنده , , David and Boston، نويسنده , , Andrew M. Boston، نويسنده , , Helen and Cooper، نويسنده , , Reynold and Hall، نويسنده , , Chris and Mather، نويسنده , , Andy and Nolan، نويسنده , , Paul and Turk، نويسنده , , Gerard، نويسنده ,
Abstract :
Measurement of induced transient charges on spectator electrodes is a critical requirement of the SmartPET project. Such a task requires the precise measurement of small amplitude pulses. Induced charge magnitudes on the SmartPET detectors were therefore studied and the suitability of wavelet analysis applied to de-noising signals was investigated. It was found that the absolute net maximum induced charge magnitudes from the two adjacent electrodes to the collecting electrode is 17% of the real charge magnitude for the AC side and 20% for the DC side. It was also found that wavelet analysis could identify induced charges of comparable magnitude to system noise.
Keywords :
Image charge , SmartPET , De-noising , PET spatial resolution , Induced charge , Wavelet analysis
