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Experimental evaluation and basis function optimization of the spatially variant image-space PSF on the Ingenuity PET/MR scanner

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Published in Medical Physics. 2014, vol. 41, no. 6, p. 062501
Abstract The Ingenuity time-of-flight (TF) PET/MR is a recently developed hybrid scanner combining the molecular imaging capabilities of PET with the excellent soft tissue contrast of MRI. It is becoming common practice to characterize the system's point spread function (PSF) and understand its variation under spatial transformations to guide clinical studies and potentially use it within resolution recovery image reconstruction algorithms. Furthermore, due to the system's utilization of overlapping and spherical symmetric Kaiser-Bessel basis functions during image reconstruction, its image space PSF and reconstructed spatial resolution could be affected by the selection of the basis function parameters. Hence, a detailed investigation into the multidimensional basis function parameter space is needed to evaluate the impact of these parameters on spatial resolution.
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PMID: 24877835
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Article (Published version) (2 MB) - document accessible for UNIGE members only Limited access to UNIGE
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Research group Imagerie Médicale (TEP et TEMP) (542)
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KOTASIDIS, Fotis, ZAIDI, Habib. Experimental evaluation and basis function optimization of the spatially variant image-space PSF on the Ingenuity PET/MR scanner. In: Medical Physics, 2014, vol. 41, n° 6, p. 062501. https://archive-ouverte.unige.ch/unige:44516

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Deposited on : 2015-01-06

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