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    • 1. 发明专利
    • Bed positioning system, radiotherapy system and bed positioning method
    • BED定位系统,放射治疗系统和BED定位方法
    • JP2010187991A
    • 2010-09-02
    • JP2009036757
    • 2009-02-19
    • Hitachi Ltd株式会社日立製作所
    • FUJIMOTO RINTARONAGAMINE YOSHIHIKOKIYONO TOMOYUKIYOKOI KAZUMA
    • A61N5/10A61B6/00A61B6/04G06T1/00G06T5/50
    • PROBLEM TO BE SOLVED: To provide a bed positioning system enhancing the positioning precision of a bed using simple X-ray image data in radiotherapy. SOLUTION: Radiotherapy equipment 102 includes an irradiation head 105 and an X-ray generator 106 provided to a rotary gantry 103, and the bed positioning system 301 has the X-ray source 308 and an X-ray image receiver 309 provided in opposed relation to the rotary gantry 103 so as to hold a top plate and forming X-ray data having at least two kinds of mutually different energy distributions formed by the X-ray source 308 and the X-ray image receiver 309. The image processing arithmetic device of an imaging operation table 306 forms an image emphasizing bone tissue necessary for positioning by the subtraction processing between a plurality of the X-ray images formed on the basis of the X-ray data having the different energy distributions and a positioning device 305 uses the image data along with tomographic image data used in a medical treatment plan to perform the positioning of the bed 107. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种使用放射治疗中的简单X射线图像数据提高床的定位精度的床定位系统。 解决方案:放射治疗设备102包括设置在旋转台架103上的照射头105和X射线发生器106,并且床定位系统301具有X射线源308和X射线图像接收器309 与旋转台架103相对的关系,以便保持顶板并形成具有由X射线源308和X射线图像接收器309形成的至少两种相互不同的能量分布的X射线数据。图像处理 成像操作表306的算术装置通过减法处理在基于具有不同能量分布的X射线数据形成的多个X射线图像和定位装置305之间形成强调定位所需的骨组织的图像 使用图像数据以及医疗计划中使用的断层图像数据来执行床107的定位。版权所有(C)2010,JPO&INPIT
    • 2. 发明专利
    • Radiation measuring circuit and nuclear medicine diagnosing apparatus using the same
    • 辐射测量电路和核医学诊断装置
    • JP2009128212A
    • 2009-06-11
    • JP2007304162
    • 2007-11-26
    • Hitachi Ltd株式会社日立製作所
    • KIYONO TOMOYUKITAKAHASHI ISAOYANAGIDA NORIFUMI
    • G01T1/24G01T1/161G01T1/175H01L31/09
    • PROBLEM TO BE SOLVED: To provide a radiation measuring circuit of a semiconductor radiation detector which exhibits good electric conduction when measuring radiation, and also to provide a nuclear medicine diagnosing apparatus using the radiation measuring circuit.
      SOLUTION: The semiconductor radiation detector 21 is made up by bonding conductive members 22, 23 and electrodes A, C of a conductive thin film which is formed on the surface of a semiconductor element S, with a conductive adhesive 24. The radiation measuring circuit 100 includes the semiconductor radiation detector 21, a resistor 41, a capacitor 43, a preamplifier 45, a high-voltage supply 27, a control means 30, a voltage regulating means 31, a mechanical relay 33, a protection diode 48, and the like. The mechanical relay 33 is turned on and off so as to recover the conduction of the conductive adhesive 24 of the semiconductor radiation detector 21 in a state of a prescribed second high voltage which is equal to or less than a first high voltage used for an operation of recovering the conduction of the conductive adhesive 24. Since the protection diode 48 is disposed therein, the preamplifier 45 is prevented from being damaged owing to a high voltage occurring along with above on-off operation.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种半导体辐射检测器的辐射测量电路,其在测量辐射时表现出良好的导电性,并且还提供使用该辐射测量电路的核医学诊断装置。 解决方案:半导体辐射检测器21通过将导电构件22,23和形成在半导体元件S的表面上的导电薄膜的电极A,C与导电粘合剂24接合而构成。辐射 测量电路100包括半导体辐射检测器21,电阻器41,电容器43,前置放大器45,高压电源27,控制装置30,电压调节装置31,机械继电器33,保护二极管48, 等等。 机械继电器33接通和断开,以便在等于或小于用于操作的第一高电压的规定的第二高电压的状态下恢复半导体辐射检测器21的导电粘合剂24的导通 恢复导电粘合剂24的导通。由于保护二极管48设置在其中,所以防止前置放大器45由于与上述开 - 关操作一起发生的高电压而被损坏。 版权所有(C)2009,JPO&INPIT
    • 3. 发明专利
    • Nuclear medicine diagnosis device
    • 核医学诊断装置
    • JP2006184139A
    • 2006-07-13
    • JP2004378584
    • 2004-12-28
    • Hitachi Ltd株式会社日立製作所
    • KIYONO TOMOYUKIUENO YUICHIROTSUCHIYA KAZUTOSHIYOKOI KAZUMAKOMINAMI SHINYA
    • G01T1/161G01T1/20G01T1/24
    • G01T1/249G01T1/24
    • PROBLEM TO BE SOLVED: To shorten an interruption time of radiation measurement caused at the time of canceling polarization in a nuclear medicine diagnosis device using a semiconductor radiation detector.
      SOLUTION: This device is equipped with a capacitor 13 for applying a voltage to the semiconductor radiation detector 14 for detecting a radiation from a specimen, the first constant current means 15 for allowing a charge current to the capacitor 13 to flow, the second constant current means 16 for allowing a discharge current from the capacitor 13 to flow. The device may be optionally equipped with a capacitor for applying a voltage to the semiconductor radiation detector, the first resistor for allowing a charge current to the capacitor and a discharge current therefrom to flow, and the second resistor connected in parallel to the first resistor when charging or discharging the capacitor.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:缩短在使用半导体辐射检测器的核医学诊断装置中消除极化时引起的辐射测量的中断时间。 解决方案:该装置配备有用于向半导体辐射检测器14施加电压以检测来自试样的辐射的电容器13,用于允许电容器13的充电电流流动的第一恒流装置15, 用于允许来自电容器13的放电电流流动的第二恒定电流装置16。 该装置可以可选地配备有用于向半导体辐射检测器施加电压的电容器,用于允许来自电容器的充电电流的第一电阻器和其中的放电电流流过,并且第二电阻器与第一电阻器并联连接, 充电或放电电容器。 版权所有(C)2006,JPO&NCIPI
    • 4. 发明专利
    • Radiation measuring apparatus and nuclear medicine diagnostic equipment
    • 辐射测量装置和核医学诊断设备
    • JP2011185803A
    • 2011-09-22
    • JP2010052535
    • 2010-03-10
    • Hitachi Ltd株式会社日立製作所
    • KOMINAMI SHINYAKIYONO TOMOYUKI
    • G01T1/24G01T1/161
    • G01T1/24G01T1/247
    • PROBLEM TO BE SOLVED: To provide a radiation measuring apparatus, along with nuclear medicine diagnostic equipment using the same, for measuring with no polarization at a stable performance by preventing damage on an amplifier, with a shorter interrupted period in measurement. SOLUTION: A radiation measuring apparatus 11 includes: a semiconductor radiation detector 111 for detecting radiation; a capacitor 110 for applying a voltage to the semiconductor radiation detector; one or more DC power sources 101 and 102 which can accumulate positive electric charge and negative electric charge on one electrode of the capacitor; a constant current device 189 which causes a flow of a current from the DC power source to the electrode of the capacitor; and two or more switch devices 105 and 106 connected to a wiring for connecting the DC power source to the electrode of the capacitor. Pieces of nuclear medicine diagnostic equipment 600 and 700 include the radiation measuring apparatus 11. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种辐射测量装置,以及使用该辐射测量装置的核医学诊断装置,通过防止放大器的损坏,以较短的测量中断周期在稳定的性能下进行测量。 解决方案:辐射测量装置11包括:用于检测辐射的半导体辐射检测器111; 用于向半导体辐射检测器施加电压的电容器110; 可以在电容器的一个电极上积累正电荷和负电荷的一个或多个直流电源101和102; 使电流从DC电源流向电容器的电极的恒流器件189; 以及连接到用于将DC电源连接到电容器的电极的布线的两个或更多个开关装置105和106。 核医学诊断设备600和700包括辐射测量仪器11.版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Radiation measurement apparatus and nuclear medicine diagnosis apparatus
    • 辐射测量装置和核医学诊断装置
    • JP2009244093A
    • 2009-10-22
    • JP2008090842
    • 2008-03-31
    • Hitachi Ltd株式会社日立製作所
    • KIYONO TOMOYUKIISHIZU TAKAAKIUENO YUICHIRO
    • G01T1/24G01T1/161
    • G01T1/24
    • PROBLEM TO BE SOLVED: To protect an amplification circuit against a damage by a surge current, and ensure the temporal continuity in a measurement at the minimum dead time. SOLUTION: A radiation measurement apparatus includes: a high voltage DC power supply 11 for applying a bias voltage to a radiation detector 10a comprising a semiconductor crystal; a controller for controlling the bias voltage from the high voltage DC power supply 11 so as to be turned on/off; the amplification circuit 30; a protection circuit 20 disposed between the radiation detector 10a and the amplification circuit 30, and protecting the amplification circuit 30 against the surge current generated when the bias voltage is controlled so as to be turned on/off; a control means 40 for blocking the surge current flowing in the amplification circuit 30; and a switch 25 disposed parallel to the protection circuit 20, and having an operation state controlled by the control means 40. The control means 40 controls the operation state of the switch 25 in synchronization with an on/off control by the controller, and blocks the surge current flowing in the amplification circuit 30. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了保护放大电路免受浪涌电流的损坏,并确保在最小死区时间内测量的时间连续性。 解决方案:辐射测量装置包括:高压直流电源11,用于向包括半导体晶体的辐射检测器10a施加偏置电压; 控制器,用于控制来自高压直流电源11的偏置电压以被开/关; 放大电路30; 设置在辐射检测器10a和放大电路30之间的保护电路20,并且当偏置电压被控制以导通/断开时,保护放大电路30免受产生的浪涌电流的影响; 用于阻止在放大电路30中流动的浪涌电流的控制装置40; 以及与保护电路20并联设置的开关25,并且具有由控制装置40控制的操作状态。控制装置40与控制器的开/关控制同步地控制开关25的操作状态,并且阻止 浪涌电流在放大电路30中流动。版权所有(C)2010,JPO&INPIT
    • 8. 发明专利
    • Test device and screening method for radiation detector
    • 辐射探测器的测试装置和筛选方法
    • JP2007273688A
    • 2007-10-18
    • JP2006096849
    • 2006-03-31
    • Hitachi Ltd株式会社日立製作所
    • TAKAHASHI ISAOKIYONO TOMOYUKIYOKOI KAZUMA
    • H01L31/09G01T1/24
    • PROBLEM TO BE SOLVED: To provide a method for screening out radiation detectors which are formed of compound semiconductors of high stability, easily in a short time.
      SOLUTION: A first measuring unit 20 and a second measuring unit 30 measure dark currents by applying a first applied voltage V1 and a second applied voltage V2 which are different from each other to electrodes. With that the first measured current obtained by the first applied voltage and the second measured current obtained by the second applied voltage as a first dark current value and a second dark current value, respectively, a quotient value obtained by dividing the second dark current value by the first dark current value is calculated by a screening unit 12. The radiation detectors are screened out depending on whether the quotient values are within the range of a prescribed value or not, so that the radiation detectors of high stability can be easily screened out in a short time.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种在短时间内容易地筛选由高稳定性的化合物半导体形成的辐射检测器的方法。 解决方案:第一测量单元20和第二测量单元30通过向电极施加彼此不同的第一施加电压V1和第二施加电压V2来测量暗电流。 利用第一施加电压获得的第一测量电流和由第二施加电压获得的第二测量电流分别作为第一暗电流值和第二暗电流值,将通过将第二暗电流值除以 第一暗电流值由屏蔽单元12计算。根据商值是否在规定值的范围内,对放射线检测器进行屏蔽,从而可以容易地将放射线检测器 很短的时间。 版权所有(C)2008,JPO&INPIT
    • 10. 发明专利
    • Nuclear medicine diagnosis device and cooling method of nuclear medicine diagnosis device
    • 核医学诊断装置的核医学诊断装置及冷却方法
    • JP2006284394A
    • 2006-10-19
    • JP2005105398
    • 2005-03-31
    • Hitachi Ltd株式会社日立製作所
    • YANAGIDA NORIFUMIIMAI TSUTOMUMATSUMOTO TAKASHIAMAMIYA KENSUKEUENO YUICHIROKIYONO TOMOYUKI
    • G01T1/161G01T7/00
    • G01T1/2985A61B6/037G01T1/244G01T1/249
    • PROBLEM TO BE SOLVED: To provide a nuclear medicine diagnosis device capable of maintaining a detector at a low temperature, and performing highly accurate diagnosis by improving time resolution and energy resolution. SOLUTION: In this nuclear medicine diagnosis device, an imaging device 11 for imaging a specimen H supported on a bed 14 has a constitution wherein a detector substrate 20A on which a radiation detector 21 for detecting a radiation discharged from the specimen H is arranged and a signal processing substrate 20B on which a signal processing device for processing a detected signal from the radiation detector 21 is arranged are connected together through an intermediate substrate 20C by connectors C1, C2, and a detector space A including the radiation detector 21 is separated from a signal processing device space B including the signal processing device. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供能够将检测器维持在低温下的核医学诊断装置,并且通过提高时间分辨率和能量分辨率来进行高精度的诊断。 解决方案:在这种核医学诊断装置中,用于对支撑在床14上的样本H进行成像的成像装置11具有这样的结构,其中检测器基板20A上用于检测从样本H排出的辐射的放射线检测器21 布置有信号处理基板20B,其上布置有用于处理来自辐射检测器21的检测信号的信号处理装置,通过中间基板20C连接在一起,连接器C1,C2和包括辐射检测器21的检测器空间A是 与包括信号处理装置的信号处理装置空间B分离。 版权所有(C)2007,JPO&INPIT