Exploiting residual projection data and reference data for processing data produced by imaging modality
    1.
    发明公开
    Exploiting residual projection data and reference data for processing data produced by imaging modality 审中-公开
    Nutzung von Projektionsdaten und Referenzdaten zur Datenverarbeitung durchBildgebungsmodalität

    公开(公告)号:EP2922028A1

    公开(公告)日:2015-09-23

    申请号:EP14160311.8

    申请日:2014-03-17

    IPC分类号: G06T11/00

    CPC分类号: G06T11/005 G06T2211/436

    摘要: Apparatus which can be used in a context of image reconstruction on the basis of projection data produced by an imaging modality, such as computer tomography or magnetic resonance imaging comprises a residual projection data processor (101; 201; 301) and an image reconstruction unit (102; 202; 302). The residual projection data processor (101; 201; 301) is configured to determine residual projection data (Δ g ; Δ g̃ ; Δ ) by cancelling reference projection data ( g ref ; g̃ ref ) from measured projection data ( g obs ; g̃ obs ). The measured projection data ( g obs ; g̃ obs ) represents a measured projection of a test object under examination obtained by an imaging modality. The reference projection data ( g ref ; g̃ ref ) represents a projection of a reference object. The image reconstruction unit (102; 202; 302) is configured to reconstruct a resulting residual image (Δ f ; Δ f̃ ; Δ ) on the basis of the residual projection data (Δ g ; Δ g̃ ; Δ ) by solving an inverse projection transformation problem that links the residual projection data (Δ g ; Δ g̃ ; Δ ) to the resulting residual image (Δ f ; Δ f̃ ; Δ ). The resulting residual image (Δ f ; Δ f̃; Δ ) represents differences between the reference object and the test object under examination. A corresponding method is also described.

    摘要翻译: 可以在基于由诸如计算机断层摄影或磁共振成像的成像模态产生的投影数据的图像重建的上下文中使用的装置包括残余投影数据处理器(101; 201; 301)和图像重建单元 102; 202; 302)。 剩余投影数据处理器(101; 201; 301)被配置为通过从测量的投影数据(g obs; g obs)中取消参考投影数据(g ref; g ref)来确定剩余投影数据(“g” )。 测量的投影数据(g obs; g obs)表示通过成像模态获得的检查对象的测量投影。 参考投影数据(g ref; g ref)表示参考对象的投影。 图像重建单元(102; 202; 302)被配置为通过求解反投影来重建基于剩余投影数据(“g”“g”)的结果剩余图像(“f”“f”) 将剩余投影数据(“g”“g”)连接到所得到的残差图像(“f”“f”)的变换问题。 所得到的残差图像(“f”“f”)表示参考对象和检查对象之间的差异。 还描述了相应的方法。

    Apparatus and method for providing an image
    2.
    发明公开
    Apparatus and method for providing an image 审中-公开
    Vorrichtung und Verfahren zur Bereitstellung eines Bildes

    公开(公告)号:EP2985992A1

    公开(公告)日:2016-02-17

    申请号:EP14180880.8

    申请日:2014-08-13

    IPC分类号: H04N5/369 H04N5/3745

    摘要: An apparatus for providing an image is provided. The apparatus comprises a sensor (110) comprising a plurality of sensor pixels, wherein each of the sensor pixels of the sensor (110) comprises one or more photosensitive elements, wherein each of the one or more photosensitive elements comprises a photosensitive area, wherein the sensor (110) is configured to provide image data comprising a plurality of first image pixels, and wherein each of the sensor pixels is configured to provide one of the first image pixels of the image data. Moreover, the apparatus comprises an image reconstructor (120; 220) for providing the image, wherein the image comprises a plurality of second image pixels, wherein the image reconstructor (120; 220) is configured to generate the second image pixels of the image depending on the first image pixels of the image data, wherein the number of the first image pixels of the image data is smaller than the number of the second image pixels of the image data, wherein the image reconstructor (120; 220) is configured to generate each of a group of one or more of the second image pixels depending on at least two of the first image pixels. At least one of the sensor pixels of the sensor (110) comprises two or more photosensitive elements being connected such that said one of the first image pixels provided by said sensor pixel depends on each of the two or more photosensitive elements. Or, the photosensitive area of a first one of the photosensitive elements of the sensor pixels of the sensor (110) has a first shape being different from a second shape of the photosensitive area of a second one of the photosensitive elements of the sensor pixels, wherein said first shape is concave.

    摘要翻译: 提供了一种用于提供图像的设备。 该装置包括包括多个传感器像素的传感器(110),其中传感器(110)的每个传感器像素包括一个或多个感光元件,其中一个或多个感光元件中的每一个包括感光区域,其中 传感器(110)被配置为提供包括多个第一图像像素的图像数据,并且其中每个传感器像素被配置为提供图像数据的第一图像像素中的一个。 此外,该装置包括用于提供图像的图像重构器(120; 220),其中该图像包括多个第二图像像素,其中图像重建器(120; 220)被配置为生成图像的第二图像像素依赖 在图像数据的第一图像像素上,其中图像数据的第一图像像素的数量小于图像数据的第二图像像素的数量,其中图像重建器(120; 220)被配置为产生 根据第一图像像素中的至少两个,一组或多个第二图像像素中的每一个。 传感器(110)的传感器像素中的至少一个包括两个或多个感光元件连接,使得由所述传感器像素提供的所述第一图像像素之一取决于两个或更多个光敏元件中的每一个。 或者,传感器(110)的传感器像素的第一感光元件的感光区域具有与传感器像素的第二感光元件的感光区域的感光区域的第二形状不同的第一形状, 其中所述第一形状是凹形的。