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., +, TMI Feb. 2014 518-534 Postreconstruction Nonlocal Means Filtering of Whole-Body PET With an Anatomical Prior. ... ., +, TMI April 2014 1004 Postreconstruction Nonlocal Means Filtering of Whole-Body PET With an Anatomical Prior. ... MRI Upsampling Using Feature-Based Nonlocal Means Approach. Jafari-Khouzani, K., 1969 -1985 Numerical Surrogates for Human Observers in Myocardial Motion Evaluation From SPECT Images. ...doi:10.1109/tmi.2014.2386278 fatcat:poarfhfto5bm5mhfl7ugwtw4xy
Furthermore, guided reconstruction outperformed a comparable non-local means filter, indicating that regularising during reconstruction is preferable to post-reconstruction approaches. ... However, one or more of the images may present high levels of noise. ... In addition, the MLEM images were filtered with nonlocal-means (NLM) filters corresponding to the same FDG-derived weights used in the MAPEM approach (denoted hereafter as FDG-NLM). ...doi:10.1109/trpms.2018.2856581 pmid:30215028 pmcid:PMC6130802 fatcat:2gxn25rkpbe2dgryiqf6iohv6q
We present here a detailed review of recent efforts for AI-based PET image enhancement with a focus on network architectures, data types, loss functions, and evaluation metrics. ... High noise and low spatial resolution are two key confounding factors that limit the qualitative and quantitative accuracy of PET images. ... Masoud Malekzadeh, Tzu-An Song, and Joyita Dutta are supported in part by NIH grants K01AG050711, R21AG068890, and R03AG070750. ...arXiv:2107.13595v1 fatcat:dethv7xhpbhjnikwbunr5e3tgi
International Research Journal of Engineering and Technology
PET image is constructed as kernel matrix. In dynamic PET image reconstruction, proper numbers of composite frames is important for reconstructing high quality images and reduce noise. ... To improve image quality, prior information are used. ... DYNAMIC PET SIMULATION SETUP Dynamic PET scans were simulated for a GE DST whole body PET scanner using a Zubal head phantom. The Zubal brain phantom is shown below in Fig-2 . ...fatcat:oalmvasm2fhb5oenbgkwjcespi