Optical detection of dental caries
    4.
    发明授权
    Optical detection of dental caries 有权
    龋齿的光学检测

    公开(公告)号:US07577284B2

    公开(公告)日:2009-08-18

    申请号:US11408360

    申请日:2006-04-21

    IPC分类号: G06K9/00

    CPC分类号: A61B5/0088

    摘要: A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. The first and second enhanced images are then analyzed to select and display the best-contrast image. This method provides high contrast images for carious regions (58) on all tooth surfaces.

    摘要翻译: 用于龋齿检测的方法使用图像捕获装置(30,32)通过照亮牙齿来激发荧光发射来从牙齿(20)获得荧光图像数据。 然后通过以第一入射角照射牙齿获得牙齿的第一增强图像,从牙齿组织获得反向散射反射图像数据,并将后向散射反射图像数据与荧光图像数据组合。 然后通过以第二入射角照射牙齿获得牙齿的第二增强图像,从牙齿组织获得反向散射反射图像数据,并将后向散射反射图像数据与荧光图像数据组合。 然后分析第一和第二增强图像以选择和显示最佳对比度图像。 该方法为所有牙齿表面上的龋齿区域(58)提供高对比度图像。

    APPARATUS FOR DENTAL OCT IMAGING
    9.
    发明申请
    APPARATUS FOR DENTAL OCT IMAGING 审中-公开
    用于牙科OCT成像的装置

    公开(公告)号:US20080118886A1

    公开(公告)日:2008-05-22

    申请号:US11561971

    申请日:2006-11-21

    IPC分类号: A61C3/00

    CPC分类号: A61B5/0088 A61B5/0066

    摘要: An apparatus (10) for obtaining an image of a tooth (20) includes an image sensor and a white light source (12) providing broadband polychromatic light and an ultraviolet light source providing narrow-band light. A combiner (15) directs broadband polychromatic light and narrow band light along a common illumination path to illuminate the tooth. A polarization beamsplitter (18) directs polarized light from the illumination path along an optical axis (216). An optical coherence tomography (OCT) imaging apparatus (70) splits the low coherence light into a sample path and a reference path and a dichroic element (78) directs the polarized illumination and the sample path low coherence light along the optical axis. An image processor (100) identifies a region of interest according to either a white light image (124), a fluorescent light image (120), or both and the OCT imaging apparatus obtains an OCT image over the region of interest.

    摘要翻译: 用于获得牙齿(20)的图像的装置(10)包括图像传感器和提供宽带多色光的白色光源(12)和提供窄带光的紫外光源。 组合器(15)沿着公共照明路径引导宽带多色光和窄带光以照亮牙齿。 偏振分束器(18)沿着光轴(216)引导来自照明路径的偏振光。 光学相干断层摄影(OCT)成像设备(70)将低相干光分解成采样路径,参考路径和二向色元件(78)引导偏振照明和采样路径沿着光轴的低相干光。 图像处理器(100)根据白光图像(124),荧光图像(120)或两者来识别感兴趣的区域,并且OCT成像设备在感兴趣区域上获得OCT图像。