2024年3月18日发(作者：燕山兰)
专利内容由知识产权出版社提供
专利名称：X-ray detector for phase contrast and / or
dark field imaging, interferometer having
the X-ray detector, X-ray imaging system,
method for performing phase contrast X-ray
imaging and / or dark field X-ray imaging,
and computer program , Computer readable
media
发明人：プロクサ ローランド
申请号：JP2018502658
申请日：20160720
公开号：JP6581713B2
公开日：20190925
摘要：The present invention relates to X-ray imaging. In order to reduce X-ray dose
exposure during X-ray image acquisition, an X-ray detector is provided that is suitable for
phase contrast and/or dark-field imaging. The X-ray detector comprises a scintillator
layer (12) and a photodiode layer (14). The scintillator layer is configured to convert
incident X- ray radiation (16) modulated by a phase grating structure (18) into light to be
detected by the photodiode layer. The scintillator layer comprises an array of scintillator
channels (20) periodically arranged with a pitch (22) forming an analyzer grating structure.
The scintillator layer and the photodiode layer form a first detector layer (24) comprising
a matrix of pixels (26). Each pixel comprises an array of photodiodes (28), each
photodiode forming a sub-pixel (30). Adjacent sub-pixels during operation receive signals
having mutually shifted phases. The sub-pixels that during operation receive signals
having mutually identical phase form a phase group per pixel. The signals received by the
sub-pixels within the same phase group per pixel during operation are combined to
provide one phase group signal (32). The phase group signals of different phase groups
during operation are obtained in one image acquisition. In an example, the pitch of the
scintillator channels is detuned by applying a correcting factor c to a fringe period
(Pfringe) of a periodic interference pattern (35) created by the phase grating structure,
wherein 0
申请人：コーニンクレッカ フィリップス エヌ ヴェ
代理人：特許業務法人Ｍ＆Ｓパートナーズ
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2024年3月18日发(作者：燕山兰)
专利内容由知识产权出版社提供
专利名称：X-ray detector for phase contrast and / or
dark field imaging, interferometer having
the X-ray detector, X-ray imaging system,
method for performing phase contrast X-ray
imaging and / or dark field X-ray imaging,
and computer program , Computer readable
media
发明人：プロクサ ローランド
申请号：JP2018502658
申请日：20160720
公开号：JP6581713B2
公开日：20190925
摘要：The present invention relates to X-ray imaging. In order to reduce X-ray dose
exposure during X-ray image acquisition, an X-ray detector is provided that is suitable for
phase contrast and/or dark-field imaging. The X-ray detector comprises a scintillator
layer (12) and a photodiode layer (14). The scintillator layer is configured to convert
incident X- ray radiation (16) modulated by a phase grating structure (18) into light to be
detected by the photodiode layer. The scintillator layer comprises an array of scintillator
channels (20) periodically arranged with a pitch (22) forming an analyzer grating structure.
The scintillator layer and the photodiode layer form a first detector layer (24) comprising
a matrix of pixels (26). Each pixel comprises an array of photodiodes (28), each
photodiode forming a sub-pixel (30). Adjacent sub-pixels during operation receive signals
having mutually shifted phases. The sub-pixels that during operation receive signals
having mutually identical phase form a phase group per pixel. The signals received by the
sub-pixels within the same phase group per pixel during operation are combined to
provide one phase group signal (32). The phase group signals of different phase groups
during operation are obtained in one image acquisition. In an example, the pitch of the
scintillator channels is detuned by applying a correcting factor c to a fringe period
(Pfringe) of a periodic interference pattern (35) created by the phase grating structure,
wherein 0
申请人：コーニンクレッカ フィリップス エヌ ヴェ
代理人：特許業務法人Ｍ＆Ｓパートナーズ
更多信息请下载全文后查看