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    • 7. 发明授权
    • Smart microscope system for radiation biodosimetry
    • US11501545B2
    • 2022-11-15
    • US17137317
    • 2020-12-29
    • Peter Keith RoganYanxin LiJin Liu
    • Peter Keith RoganYanxin LiJin Liu
    • G06V20/69G06T5/50G01T1/02G06T5/00
    • Automation of microscopic pathological diagnosis relies on digital image quality, which, in turn, affects the rates of false positive and negative cellular objects designated as abnormalities. Cytogenetic biodosimetry is a genotoxic assay that detects dicentric chromosomes (DCs) arising from exposure to ionizing radiation. The frequency of DCs is related to radiation dose received, so the inferred radiation dose depends on the accuracy of DC detection. To improve this accuracy, image segmentation methods are used to rank high quality cytogenetic images and eliminate suboptimal metaphase cell data in a sample based on novel quality measures. When sufficient numbers of high quality images are found, the microscope system is directed to terminate metaphase image collection for a sample. The International Atomic Energy Agency recommends at least 500 images be used to estimate radiation dose, however often many more images are collected in order to select the metaphase cells with good morphology for analysis. Improvements in DC recognition increase the accuracy of dose estimates, by reducing false positive (FP) DC detection. A set of chromosome morphology segmentation methods selectively filtered out false DCs, arising primarily from extended prometaphase chromosomes, sister chromatid separation and chromosome fragmentation. This reduced FPs by 55% and was highly specific to the abnormal structures (≥97.7%). Additional procedures were then developed to fully automate image review, resulting in 6 image-level filters that, when combined, selectively remove images with consistently unparsable or incorrectly segmented chromosome morphologies. Overall, these filters can eliminate half of the FPs detected by manual image review. Optimal image selection and FP DCs are minimized by combining multiple feature based segmentation filters and a novel image sorting procedure based on the known distribution of chromosome lengths. Consequently, the average dose estimation error was reduced from 0.4 Gy to
    • 9. 发明授权
    • Phosphate ester compound of hydroxy acid substituted phenol ester, preparation method and medical use thereof
    • 羟基酸取代苯酚酯的磷酸酯化合物,其制备方法和医疗用途
    • US09243009B2
    • 2016-01-26
    • US13702204
    • 2010-10-13
    • Wensheng ZhangJun YangJin Liu
    • Wensheng ZhangJun YangJin Liu
    • C07F9/09
    • C07F9/09C07F9/091
    • Phosphate ester compound of hydroxy acid substituted phenyl ester, preparation method and medical use thereof are provided. The title compound is shown in formula (I), in which Y═C1-4 straight carbon chain, M1 and/or M2=H, alkali metal ion, protonated amine or protonated amino acid. The compound has good water solubility and high stability in its aqueous solution, and it can release 2,6-diisopropylphenol rapidly under the action of enzymes in vivo, which has the effects of sedation, hypnosis and/or anesthesia. By protecting hydroxyl of 2,6-diisopropylphenol in compound of formula (I), the first-pass metabolic activity of 2,6-diisopropylphenol is reduced, so that the synthetic compound can be used for sedation, hypnosis and/or anesthesia.
    • 提供羟基酸取代苯基酯的磷酸酯化合物,其制备方法和医疗用途。 标题化合物如式(I)所示,其中Y = C1-4直碳链,M1和/或M2 = H,碱金属离子,质子化胺或质子化氨基酸。 该化合物在其水溶液中具有良好的水溶性和高稳定性,并且可以在体内酶的作用下快速释放2,6-二异丙基苯酚,其具有镇静,催眠和/或麻醉的作用。 通过保护式(I)化合物中2,6-二异丙基苯酚的羟基,2,6-二异丙基苯酚的首过代谢活性降低,合成化合物可用于镇静,催眠和/或麻醉。
    • 10. 发明授权
    • Method for providing access to a service
    • 提供服务访问的方法
    • US08739256B2
    • 2014-05-27
    • US13121273
    • 2008-10-08
    • Uwe FoellJin Liu
    • Uwe FoellJin Liu
    • G06F7/04G06F15/16G06F17/30H04L29/06
    • H04L63/08G06F21/41H04L63/0815
    • A system is described comprising a service provider and an identity provider. A user requests access to the service provider and the service provider seeks user credentials from the identity provider. In use, the service provider issues an authentication request, which request specifies details of a plurality of acceptable authentication formats. The identity provider responds to the request either by providing authentication details for said user in one of the formats specified in the request, or by returning an error message indicating that it cannot support any of the specified authentication formats.
    • 描述了包括服务提供商和身份提供者的系统。 用户请求对服务提供商的访问,并且服务提供商从身份提供商寻求用户凭证。 在使用中,服务提供商发出认证请求,该请求指定多个可接受的认证格式的细节。 身份提供者通过以请求中指定的格式之一提供所述用户的身份验证细节,或通过返回指示其不能支持任何指定的认证格式的错误消息来响应该请求。