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Effects of collimator on imaging performance of Yttrium-90 Bremsstrahlung photons: Monte Carlo simulation

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Various phantoms were employed in the simulation to determine the main energy window using primary-to-scatter ratios (PSRs). Imaging performance was evaluated using spatial resolution indices, imaging counts, scatter fractions, and contrast-to-noise ratios. Collimator choice slightly affected energy spectrum shapes and improved PSRs. | Effects of collimator on imaging performance of Yttrium-90 Bremsstrahlung photons: Monte Carlo simulation

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