Evaluation of image gating as an approach for noise estimation and optimisation of SPECT images

Khalid Alzimami; Salem Sassi; Abduallah Alshehri; Nicholas Spyrou; Alan Britten

doi:10.1117/12.877992

16 March 2011 Evaluation of image gating as an approach for noise estimation and optimisation of SPECT images

Khalid Alzimami, Salem Sassi, Abduallah Alshehri, Nicholas Spyrou, Alan Britten

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 796148 (2011) https://doi.org/10.1117/12.877992
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

This study aims to evaluate the potential for using image gating techniques for accurate estimating random noise in clinical SPECT images. Phantom and patient bone SPECT scans were acquired in a gated mode using standard acquisition protocols with a dummy electronic trigger. The acquired projection data was divided into time slots and reconstructed using the same algorithm to produce independent sets of data. Our results showed that this method can be used for accurate estimation of the level of random noise in phantom and clinical SPECT studies, and it avoids the problem of pixel value correlation faced when using small ROI in estimating noise in SPECT images.

Citation Download Citation

Khalid Alzimami, Salem Sassi, Abduallah Alshehri, Nicholas Spyrou, and Alan Britten "Evaluation of image gating as an approach for noise estimation and optimisation of SPECT images", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 796148 (16 March 2011); https://doi.org/10.1117/12.877992

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