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