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    TISSUE-EQUIVALENT DOSIMETER
    62.
    发明申请
    TISSUE-EQUIVALENT DOSIMETER 审中-公开

    公开(公告)号：US20190162863A1

    公开(公告)日：2019-05-30

    申请号：US16092246

    申请日：2017-04-13

    Applicant: DALHOUSIE UNIVERSITY

    Inventor： Alasdair SYME ,  Ian HILL

    IPC: G01T1/02 ,  H01L51/05 ,  H01L51/44

    CPC classification number: G01T1/026 ,  G01T1/02 ,  H01L51/0512 ,  H01L51/44

    Abstract: Radiation dosimeters are disclosed whereby a passive multilayer substrate is provided to confer tissue equivalence. In an example embodiment, a multilayer substrate is formed over a semiconductor-based radiation sensing layer, where the multilayer substrate includes at least one low-atomic-number layer of having an effective atomic number that is smaller than that of water, and at least one high-atomic-number layer having an effective atomic number that is greater than that of water. The low-atomic-number layers and high-atomic-number layers are provided with respective thicknesses and compositions for modulating the dependence of the signal produced by the radiation dosimeter on photon energy, such that the signal, when calibrated to provide a measure of dose, exhibits approximate tissue-equivalence over a prescribed photon energy range. The multilayer substrate may be configured such that tissue equivalence is provided over an energy range including diagnostic and therapeutic energy ranges, spanning, for example, 20 keV to 5 MeV.

    Method and apparatus for differentially detecting beta rays and gamma rays included in radio active rays and package comprising the apparatus
    66.
    发明授权
    Method and apparatus for differentially detecting beta rays and gamma rays included in radio active rays and package comprising the apparatus 有权

    公开(公告)号：US09720107B2

    公开(公告)日：2017-08-01

    申请号：US14883011

    申请日：2015-10-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shin-hee Cho ,  In-geol Baek ,  Jae-geol Cho

    IPC: G01T1/24 ,  G01T1/02

    CPC classification number: G01T1/242 ,  G01T1/026 ,  G01T1/244 ,  G01T1/247

    Abstract: Methods, apparatuses, and methods for manufacturing apparatuses that differentially detect beta and/or gamma rays are described. One radiation sensor described herein has operational amplifier(s), two blocking layers capable of blocking beta rays, and two photodiodes. The first photodiode is disposed between the blocking layers and thus isolated from incident beta rays. Accordingly, the first photodiode is capable of detecting gamma rays and providing a current corresponding to detected gamma rays to an operational amplifier. The second photodiode is disposed on one of the blocking layers and is capable of detecting beta rays and gamma rays and providing current corresponding to detected beta and/or gamma rays to an operational amplifier. The operational amplifiers convert the currents into voltage pulses which are used to, for example, determine if beta and/or gamma rays are detected and the amount/level of detected rays.

    Detector, Three-Dimensional Direct Positron Imaging Unit, and Method to Estimate the Differential of the Radiation Dose Provided to Cancer Cells and Healthy Tissues During Hadrotherapy
    67.
    发明申请
    Detector, Three-Dimensional Direct Positron Imaging Unit, and Method to Estimate the Differential of the Radiation Dose Provided to Cancer Cells and Healthy Tissues During Hadrotherapy 审中-公开
    检测器，三维直接正电子成像单元，以及估算辐射剂量给予癌细胞和健康组织在放射治疗期间差异的方法

    公开(公告)号：US20160367205A1

    公开(公告)日：2016-12-22

    申请号：US15184318

    申请日：2016-06-16

    Applicant: Cristiano Galbiati

    Inventor： Cristiano Galbiati

    IPC: A61B6/03 ,  A61N5/10 ,  G01T1/02 ,  A61B6/04 ,  G01T1/20 ,  G01T1/24

    CPC classification number: A61B6/037 ,  A61B6/0421 ,  A61N5/1071 ,  A61N2005/1087 ,  A61N2005/109 ,  A61N2005/1094 ,  G01T1/023 ,  G01T1/026 ,  G01T1/2018 ,  G01T1/204 ,  G01T1/249 ,  G01T1/2985

    Abstract: Disclosed is a detector for a positron imaging unit, comprises a hollow body with an inner cylindrical wall and an outer wall spaced apart from the inner cylindrical wall. The hollow body includes a scintillating material, suitable to emit photons once hit by a 511 keV Y-ray, and one or more pairs of photo-detecting units (e.g. comprising PMTs or SiPM) for detecting photons emitted by the scintillating material; each photo-detecting unit of a pair being placed at opposite ends of the inner cylindrical wall along a radial direction. The scintillating material has scintillation decay time τ lower than 10 ns, an atomic number greater than 10, and a high scintillation yield greater than 8,000 photons/MeV, and comprises a mixture of xenon and argon. An imaging unit including the detector and a method to estimate the differential of the dose of radiation provided in a subject to cancer cells and to surrounding tissues in the course of hadrotherapy is also disclosed.

    Abstract translation: 公开了用于正电子成像单元的检测器，包括具有内圆柱形壁和与内圆柱形壁间隔开的外壁的中空本体。 该空心体包括闪烁材料，适于发射一次由511keV Y射线击中的光子，以及一对或多对光检测单元（例如包括PMT或SiPM），用于检测由闪烁材料发射的光子; 一对的每个光检测单元沿着径向位于内筒壁的相对端。 闪烁材料具有低于10ns的闪烁衰减时间τ，大于10的原子数，高于8,000个光子/ MeV的高闪烁产率，并且包括氙和氩的混合物。 还公开了一种成像单元，其包括检测器和估计在受治疗者中在癌症细胞和周围组织在治疗过程中提供的辐射剂量差异的方法。

    COMBINED N-TYPE AND P-TYPE MOS-BASED RADIATION SENSORS FOR ENVIRONMENTAL COMPENSATIONS
    70.
    发明申请
    COMBINED N-TYPE AND P-TYPE MOS-BASED RADIATION SENSORS FOR ENVIRONMENTAL COMPENSATIONS 有权
    用于环境补偿的组合N型和P型MOS系辐射传感器

    公开(公告)号：US20160187495A1

    公开(公告)日：2016-06-30

    申请号：US14870629

    申请日：2015-09-30

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： SEAN M. SCOTT

    IPC: G01T1/02 ,  H01L27/144 ,  G01T7/00 ,  H01L31/119

    CPC classification number: G01T1/026 ,  G01T7/00 ,  G01T7/005 ,  H01L27/1443 ,  H01L31/119 ,  H01L31/1804

    Abstract: An apparatus is disclosed comprising a metal oxide semiconductor capacitor (MOSCAP) comprising one or more gate layers disposed over a contiguous radiation-sensitive insulating layer, wherein the contiguous radiation-sensitive insulating layer comprises one or more contacting dielectric layers. A method may be employed to measure a value of a radiation-induced capacitance response of a metal oxide semiconductor capacitor (MOSCAP) from multiple non-contacting gate layers disposed over a radiation-sensitive layer comprising of one or more contacting dielectric layers to thereby enhance a sensitivity and a resolution of a radiation response of the MOSCAP.

    Abstract translation: 公开了一种包括金属氧化物半导体电容器（MOSCAP）的装置，其包括设置在邻接的辐射敏感绝缘层上的一个或多个栅极层，其中所述连续的辐射敏感绝缘层包括一个或多个接触介电层。 可以采用一种方法来测量来自设置在包含一个或多个接触介电层的辐射敏感层上的多个非接触栅极层的金属氧化物半导体电容器（MOSCAP）的辐射感应电容响应的值，从而增强 MOSCAP的辐射响应的灵敏度和分辨率。

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