The distribution of coherent scatter is useful for determining the structure of a material, hence computed tomography
applying coherent scatter has been developed by several authors. To obtain the exact distribution of coherent scatter a
monochromatic, high flux, and highly parallel X-ray beam is required, and therefore, this technique is suited for a
synchrotron radiation source. If a synchrotron radiation source is used, rotating the source around the patient or even
rotating the patient is difficult. We propose a method for the estimation of coherent scatter distributions from any point,
by moving only the position of the detector along the beam path. We acquired projection data at different positions along
the beam path, and applied the maximum likelihood expectation maximization algorithm. Simulations and experiments
were performed to confirm the effectiveness of this method. The estimated scatter profiles were in approximate
agreement with that of the original data. Although improvement in accuracy of the estimation is necessary, this new
method is useful if the X-ray source cannot be rotated around the patient.
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