Recursive Bayesian estimation for respiratory motion correction in nuclear medicine imaging

Smith, Rhodri, Rahni, Ashrani Abd, Jones, John and Wells, Kevin 2013. Recursive Bayesian estimation for respiratory motion correction in nuclear medicine imaging. Presented at: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference, Anaheim, CA, USA, 27 Oct - 3 Nov 2012. 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC). IEEE, 10.1109/NSSMIC.2012.6551672

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Abstract

Respiratory motion correction degrades quantitatively and qualitatively Nuclear Medicine images. We propose that adaptive approaches are required to correct for the irregular breathing patterns often encountered in the clinical setting, which can be addressed within a Bayesian tracking formulation. This allows inference of the hidden organ configurations using only knowledge of an external observation such as a parametrized external surface. The flexible framework described provides a method to correct for organ motion whilst accommodating for irregular unseen respiratory patterns. In this work we utilize a Kalman filter and compare it with a Particle filter. A novel adaptive state transition model is also introduced to describe the evolution of organ configurations. The Kalman filter marginally outperforms the Particle filter, both approaches however offer an effective motion correction mechanism, correcting for motion with errors of around 1-3mm. We present results of simulated PET images derived from XCAT to demonstrate the efficacy of the approach.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Medicine Wales Research Diagnostic Pet Imaging Centre (PETIC)
Publisher:	IEEE
ISBN:	9781467320283
Date of Acceptance:	27 October 2012
Last Modified:	24 Jan 2020 10:17
URI:	https://orca.cardiff.ac.uk/id/eprint/126783

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