公开(公告)号：US20190027265A1

公开(公告)日：2019-01-24

申请号：US16044111

申请日：2018-07-24

申请人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

发明人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

IPC分类号： G21K1/06 ,  G01N23/041

摘要： A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.

公开(公告)号：US11488740B2

公开(公告)日：2022-11-01

申请号：US17097770

申请日：2020-11-13

申请人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

发明人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

IPC分类号： G01N23/00 ,  G21K1/06 ,  G01N23/041

摘要： A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.

公开(公告)号：US20210065924A1

公开(公告)日：2021-03-04

申请号：US17097770

申请日：2020-11-13

申请人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

发明人： Joyoni Dey ,  Narayan Bhusal ,  Leslie Butler ,  Jonathan P. Dowling ,  Kyungmin Ham ,  Varshni Singh

IPC分类号： G21K1/06 ,  G01N23/041

摘要： A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.