Anatomically guided voxel-based partial volume effect correction in brain PET: Impact of MRI segmentation
نویسندگان
چکیده
منابع مشابه
Anatomically guided voxel-based partial volume effect correction in brain PET: Impact of MRI segmentation
Partial volume effect is still considered one of the main limitations in brain PET imaging given the limited spatial resolution of current generation PET scanners. The accuracy of anatomically guided partial volume effect correction (PVC) algorithms in brain PET is largely dependent on the performance of MRI segmentation algorithms partitioning the brain into its main classes, namely gray matte...
متن کاملMRI-Guided Partial Volume Correction in Brain PET Imaging: Comparison of Five Algorithms
Received: September 18 2013 Accepted: December 26 2013
متن کاملAn MR image-guided, voxel-based partial volume correction method for PET images.
PURPOSE Partial volume effect in positron emission tomography (PET) can cause incorrect quantification of radiopharmaceutical uptake in functional imaging. A PET partial volume correction method is presented to attenuate partial volume blurring and to yield voxel-based corrected PET images. METHODS By modeling partial volume effect as a convolution of point spread function of the PET scanner,...
متن کاملStatistical Based PET Partial Volume Correction
The partial volume effect in Positron Emission Tomography (PET) is a problem for quantitative radiotracer studies. This effect results from the limited spatial resolution of the imaging device (a few mm’s). Two factors are involved; the spillover of radioactivity into neighbouring regions and the underlying tissue inhomogeneity of the particular region. Linear methods are currently used to corr...
متن کاملComparative assessment of statistical brain MR image segmentation algorithms and their impact on partial volume correction in PET.
Magnetic resonance imaging (MRI)-guided partial volume effect correction (PVC) in brain positron emission tomography (PET) is now a well-established approach to compensate the large bias in the estimate of regional radioactivity concentration, especially for small structures. The accuracy of the algorithms developed so far is, however, largely dependent on the performance of segmentation method...
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ژورنال
عنوان ژورنال: Computerized Medical Imaging and Graphics
سال: 2012
ISSN: 0895-6111
DOI: 10.1016/j.compmedimag.2012.09.001