Continuous Analog of Accelerated OS-EM Algorithm for Computed Tomography

Figure 2

Values of for CIR, OS-EM, rescaled OS-EM, and third-order RK (abbreviated as CIR, OSEM, ROSEM, and MRK3, resp.) at time , which is the independent variable of the continuous system (CIR), and at discretized time series defined by in , with and , for the discrete systems (OSEM, ROSEM, and MRK3).

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