منابع مشابه
Dynamic PET denoising with HYPR processing.
HighlY constrained backPRojection (HYPR) is a promising image-processing strategy with widespread application in time-resolved MRI that is also well suited for PET applications requiring time series data. The HYPR technique involves the creation of a composite image from the entire time series. The individual time frames then provide the basis for weighting matrices of the composite. The signal...
متن کاملPartial volume correction of brain PET studies using iterative deconvolution in combination with HYPR denoising
BACKGROUND Accurate quantification of PET studies depends on the spatial resolution of the PET data. The commonly limited PET resolution results in partial volume effects (PVE). Iterative deconvolution methods (IDM) have been proposed as a means to correct for PVE. IDM improves spatial resolution of PET studies without the need for structural information (e.g. MR scans). On the other hand, deco...
متن کاملImproved kinetic analysis of dynamic PET data with 6 optimized HYPR - LR 7 8
optimized HYPR-LR 7 8 John M. Floberg 9 Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, 10 Madison, WI 53705 11 12 Charles A. Mistretta and Jamey P. Weichert 13 Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, 14 Madison, WI 53705 and Department of Radiology, University of Wisconsin-Madison, 600 15 Highland Avenue, Madis...
متن کاملPET kinetic analysis: wavelet denoising of dynamic PET data with application to parametric imaging.
Physiological functions (e.g., cerebral blood flow, glucose metabolism, and neuroreceptor binding) can be investigated as parameters estimated by kinetic modeling using dynamic positron emission tomography (PET) images. Imaging of these physiological parameters, called parametric imaging, can locate the regional distribution of functionalities. However, the most serious technical issue affectin...
متن کاملNon-Local Means Denoising of Dynamic PET Images
OBJECTIVE Dynamic positron emission tomography (PET), which reveals information about both the spatial distribution and temporal kinetics of a radiotracer, enables quantitative interpretation of PET data. Model-based interpretation of dynamic PET images by means of parametric fitting, however, is often a challenging task due to high levels of noise, thus necessitating a denoising step. The obje...
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ژورنال
عنوان ژورنال: Journal of Nuclear Medicine
سال: 2010
ISSN: 0161-5505,2159-662X
DOI: 10.2967/jnumed.109.073999