SPECT images suffer from low contrast as a result of photons scatter. The standard method for excluding scatter component in pixelized scintillators is the application of an energy window around the central photopeak channel of each crystal cell, but small angle scattered photons still appear in the photopeak window and they are included in the reconstructed images. In this work we have assessed three subtraction techniques that use a different approach in order to calculate the scatter component and subtract it from the photopeak image. The dual energy window subtraction technique (DEWST) the convolution subtraction technique (CST) and a deconvolution technique (DT). All these techniques are compared to the standard method. The experimental results showed the superiority of DT, as a scatter correction technique.
Scatter correction techniques in high resolution detectors based on PSPMTS and scintillator arrays: an evaluation study
IEEE International Conference on Image Processing 2005 ; 3 ; III-589
2005-01-01
150167 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 2005
|Recent incoherent scatter techniques
Elsevier | 1989
|High-Resolution Decoder for Multianode Detectors
Online Contents | 1997
High Angular Resolution Laser Irradiation Detectors
British Library Conference Proceedings | 1996
|