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公开(公告)号：US20200375462A1
公开(公告)日：2020-12-03
申请号：US16885478
申请日：2020-05-28
发明人： FAN-PIN TSENG , Yu-Ching Ni , Wen-Bin Lin
摘要： A brain-function image data augmentation method includes: a step of providing a target database including a plurality of image-data information; a step of, based on a plurality of image-data expected information in an expectation-value database, calculating a ratio of the plurality of image-data expected information with respect to different ages; a step of, based on the plurality of image-data information and the ratio, obtaining image-data ratio information with respect to an estimated age; a step of establishing a relationship for each pair of the image-data information and the image-data expected information; a step of, based on the relationship, the ratio and the image-data information, calculating an estimated image-data information with respect to the estimated age; and, a step of combining linearly the estimated image-data information and the image-data ratio information so as to generate an augmented image-data information with respect to the estimated age.
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公开(公告)号：US20190117172A1
公开(公告)日：2019-04-25
申请号：US15924729
申请日：2018-03-19
发明人： Chia-Hao Chang , Shu-Chun Chang , Fan-Pin Tseng , Yu-Ching Ni
摘要： A tomography method includes: a step of having a photon counting detector to undergo a relative motion with respect to an X-Ray source, and capturing 2×N projected energy spectral data at 2×N individual discrete projection angles that divide the relative motion, the N being a positive integer; a step of reforming the 2×N projected energy spectral data at the 2×N individual discrete projection angles and establishing corresponding projection intensity data; and, a step of basing on the projection intensity data and the 2×N projected energy spectral data at the 2×N individual discrete projection angles to calculate the material decomposition images. In addition, a tomography system is also provided.
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公开(公告)号：US10925572B1
公开(公告)日：2021-02-23
申请号：US16795682
申请日：2020-02-20
发明人： Chia-Hao Chang , Sheng-Pin Tseng , Yu-Ching Ni , Fan-Pin Tseng
摘要： A geometric calibration method for dual-axis digital tomosynthesis includes the steps of: providing a calibration phantom having a first plate, a second plate parallel to the first plate, and mark points distributed to the first and second plates; arranging any mark point at the first plate not to be vertically collinear with a mark point at the second plate; projecting the calibration phantom onto a planar detector to obtain a projected calibration-phantom image; deriving a conversion relationship between the mark point and the corresponding projected position at the planar detector to further establish a projection matrix related to an imaging system; and, applying the projection matrix to calculate a plurality of geometric parameters. In addition, a geometric calibration system for dual-axis digital tomosynthesis is also provided.
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公开(公告)号：US11693146B2
公开(公告)日：2023-07-04
申请号：US17573756
申请日：2022-01-12
发明人： Chia-Hao Chang , Yu-Ching Ni , Sheng-Pin Tseng
IPC分类号： G01V5/00 , G01N23/046
CPC分类号： G01V5/0041 , G01N23/046 , G01V5/005
摘要： A calculation method for a dual-energy X-ray imaging system is provided. The calculation method for the dual-energy X-ray imaging system includes the following steps. A plurality of material attenuation coefficient ratio of the dual-energy projection image are established according to the reference materials with known material characteristics. The effective atomic number of each reference material and the material attenuation coefficient ratio are used to establish a calibration data set. A rational polynomial approximation method is adopted to obtain the characteristic model related to the material attenuation coefficient ratio of the reference material and the effective atomic number of the reference material. The material attenuation coefficient ratio of the dual-energy projection image of unknown material is established. The material attenuation coefficient ratio of the unknown material is substitute into the characteristic model to obtain the effective atomic number corresponding to the unknown material.
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公开(公告)号：US10582898B2
公开(公告)日：2020-03-10
申请号：US15924729
申请日：2018-03-19
发明人： Chia-Hao Chang , Shu-Chun Chang , Fan-Pin Tseng , Yu-Ching Ni
摘要： A tomography method includes: a step of having a photon counting detector to undergo a relative motion with respect to an X-Ray source, and capturing 2×N projected energy spectral data at 2×N individual discrete projection angles that divide the relative motion, the N being a positive integer; a step of reforming the 2×N projected energy spectral data at the 2×N individual discrete projection angles and establishing corresponding projection intensity data; and, a step of basing on the projection intensity data and the 2×N projected energy spectral data at the 2×N individual discrete projection angles to calculate the material decomposition images. In addition, a tomography system is also provided.
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公开(公告)号：US11369268B2
公开(公告)日：2022-06-28
申请号：US16885478
申请日：2020-05-28
发明人： Fan-Pin Tseng , Yu-Ching Ni , Wen-Bin Lin
摘要： A brain-function image data augmentation method includes: a step of providing a target database including a plurality of image-data information; a step of, based on a plurality of image-data expected information in an expectation-value database, calculating a ratio of the plurality of image-data expected information with respect to different ages; a step of, based on the plurality of image-data information and the ratio, obtaining image-data ratio information with respect to an estimated age; a step of establishing a relationship for each pair of the image-data information and the image-data expected information; a step of, based on the relationship, the ratio and the image-data information, calculating an estimated image-data information with respect to the estimated age; and, a step of combining linearly the estimated image-data information and the image-data ratio information so as to generate an augmented image-data information with respect to the estimated age.
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