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

Kotasidis, Fotis; Zaidi, Habib

doi:10.1118/1.4875689

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Title		Experimental evaluation and basis function optimization of the spatially variant image-space PSF on the Ingenuity PET/MR scanner
Authors		Kotasidis, Fotis Zaidi, Habib
Published in		Medical Physics. 2014, vol. 41, no. 6, 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.
Identifiers		DOI: 10.1118/1.4875689 PMID: 24877835
Full text		Article (Published version) (2 MB) - Limited access to UNIGE
Structures		Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale
Research group		Imagerie Médicale (TEP et TEMP) (542)
Citation (ISO format)		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. doi: 10.1118/1.4875689 https://archive-ouverte.unige.ch/unige:44516