Medical image processing apparatus and medical image processing method
AssigneeFUJIFILM Corporation
InventorsKeisuke Yamakawa, Taiga Goto
Life of this patent
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Abstract
A medical image processing apparatus and a medical image processing method that can reduce the noise bias of a corrected image in which high absorber artifacts included in a reconstructed image are corrected. The medical image processing apparatus has an arithmetic unit for correcting high absorber artifacts. The arithmetic unit comprises: a projection data generating section that generates projection data corresponding to a high absorber area in a reconstructed image with high absorber artifacts; a noise image generating section that generates a noise image using the projection data; and a weighted combining section that makes a weighted combining of the noise image with a corrected image in which high absorber artifacts are corrected.
Claims11
A medical image processing apparatus comprising a processor and a program storage device tangibly embodying a program of instructions executable by the processor, the medical image processing apparatus including the processor performing a method comprising:
- generating projection data corresponding to a high absorber area in a reconstructed image with high absorber artifacts;
- generating a noise image using the projection data;
- and
- making a weighted combining of the noise image with a corrected image in which high absorber artifacts are corrected, in the weighted combining the corrected image being added to a noise-adjusted image generated by weighting the noise image.
A medical image processing apparatus comprising a processor and a program storage device tangibly embodying a program of instructions executable by the processor, the medical image processing apparatus including the processor performing a method comprising:
- generating projection data corresponding to a high absorber area in a reconstructed image with high absorber artifacts, the projection data including odd-numbered projection data and even-numbered projection data generated by even-odd division of the projection data corresponding to the high absorber area;
- generating an odd-numbered reconstructed image and an even-numbered reconstructed image by reconstructing the odd-numbered projection data and the even-numbered projection data;
- generating a noise image using the projection data, the noise image being generated based on a difference between the odd-numbered reconstructed image and the even-numbered reconstructed image;
- and
- making a weighted combining of the noise image with a corrected image in which high absorber artifacts are corrected.
A medical image processing method for correcting high absorber artifacts, comprising:
- a projection data generating step of generating projection data corresponding to a high absorber area in a reconstructed image with high absorber artifacts;
- a noise image generating step of generating a noise image using the projection data;
- and
- a weighted combining step of making a weighted combining of the noise image with a corrected image in which high absorber artifacts are corrected, in the weighted combining the corrected image being added to a noise-adjusted image generated by weighting the noise image.
Dependencies are inferred from the claim text.