Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan

Keh-Shih Chiang

Meei-Ling Jan

Yu-Ching Ni

An image reconstruction method for structuring planar images into three-dimension images is disclosed in the present invention. The image reconstruction method, being adopted to perform an image reconstruction operation upon a measured value of at least a line of response (LOR) obtained by detecting an object-to-be-imaged using an inspection system, comprises steps of: utilizing a plurality of voxels, each having a first radioactivity value, to construct an image domain with reference to the object-to-be-imaged; projecting the LOR while comparing the result of the projection with the measured value to obtain a calibrated value; performing a back-projection operation basing on the relationship between the calibrated value and the first radioactivity value of each voxel of the LOR; performing a calculation basing on the relationship between the calibrated value and the first radioactivity value of each voxel to obtain a second radioactivity value; utilizing the second radioactivity value to update the first radioactivity value of each voxel of the LOR while enabling an image reconstruction operation by an iteration manner. By the method of the invention, images with preferred contrast comparing to those of prior art can be obtained such that the method of the invention can have better tumor detection ability.

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Hsinchu, Taiwan

Keh-Shih Chiang