WebFeb 25, 2016 · Ordered subset expectation maximum (OSEM) maximum standardised uptake value (SUV max) 5.4, increasing to 7.7 on Bayesian penalised likelihood … Webon ordered-subset expectation maximization (OSEM) have become the dominant iterative reconstruction procedures in SPECT and PET. The performance of OSEM was com-pared with that of filtered backprojection (FBP) in several experimental and clinical studies ( 1–5); OSEMwasshownto have better noise properties and higher image contrast and
An Accelerated Convergent Ordered Subsets Algorithm for …
WebThe purposes of this study were to characterize the performance of a 3-dimensional (3D) ordered-subset expectation maximization (OSEM) algorithm in the quantification of left ventricular (LV) function with 99m Tc-labeled agent gated SPECT (G-SPECT), the QGS program, and a beating-heart phantom and to optimize the reconstruction parameters for … WebEvaluation of the number of SPECT projections in the ordered subsets-expectation maximization image reconstruction method. Filtered back projection (FBP) method, … golf ball direction
Clinical evaluation of regularized OSEM reconstruction algorithm in …
WebJan 15, 2007 · @misc{etde_21017539, title = {A relaxed OSEM algorithm applied in {sup 60}Co container CT image reconstruction[The OSEM is stated for Ordered Subsets Expectation Maximization]} author = {Jian, Li, Zhifang, Wu, Hongzhen, An, Peng, Cong, and Meilin, Wu} abstractNote = {Relaxation parameters and smooth operations on pixels after … WebFeb 10, 2024 · Subset definition: Let A and B be two sets. We say that A is a subset of B if every element of A is also an element of B.In other words, A consists of some (possibly … WebFeb 14, 2024 · The ordered subset expectation maximization (OSEM) algorithm is fast and one of the most commonly applied PET reconstruction algorithm [ 6 ]. In most cases, OSEM provides accurate quantitative results, although some biases can be expected as the iteration process is stopped early to avoid excessive image noise [ 7, 8 ]. head to fleek