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    • 72. 发明授权
    • Radiation image read-out and reproducing apparatus
    • 辐射图像读出和再现装置
    • US4906847A
    • 1990-03-06
    • US291015
    • 1988-12-28
    • Nobuyoshi NakajimaToshitaka AganoRyousuke Furue
    • Nobuyoshi NakajimaToshitaka AganoRyousuke Furue
    • G01T1/29G03B42/02H04N1/207H04N1/387
    • H04N1/3871G01T1/2014G01T1/2016G03B42/02H04N1/207
    • A radiation image read-out and reproducing apparatus comprises a section for feeding a stimulable phosphor sheet carrying a radiation image stored thereon, a section for feeding a recording sheet, a section for photoelectrically reading ID information, and a light beam scanning section. The light beam scanning section comprises a read-out main scanning system for scanning a light beam in a main scanning direction on the stimulable phosphor sheet, a reproducing main scanning system for scanning a light beam in a main scanning direction on the recording sheet, and a sub-scanning system for moving the stimulable phosphor sheet and the recording sheet in a sub-scanning direction, thereby to read out a radiation image from a stimulable phosphor sheet and to reproduce a radiation image and ID information on a recording sheet by modulating the light beam in the reproducing main scanning system in accordance with a radiation image read out and information detected by the ID information reading section.
    • 放射线图像读出和再现装置包括用于馈送携带存储在其上的放射线图像的可刺激磷光体片的部分,用于馈送记录片的部分,用于光电读取ID信息的部分和光束扫描部分。 光束扫描部分包括用于在可刺激的荧光体片上扫描主扫描方向上的光束的读出主扫描系统,用于在记录片材上沿主扫描方向扫描光束的再现主扫描系统,以及 副扫描系统,用于沿副扫描方向移动可刺激的荧光体片材和记录片材,从而从可刺激的荧光体片材读出放射线图像,并通过调制记录片材在记录片材上再现辐射图像和ID信息 根据读出的放射线图像在再现主扫描系统中的光束和由ID信息读取部分检测到的信息。
    • 73. 发明授权
    • Radiation image read-out method and apparatus
    • 辐射图像读出方法和装置
    • US4873437A
    • 1989-10-10
    • US903802
    • 1986-09-04
    • Nobuyoshi Nakajima
    • Nobuyoshi Nakajima
    • G03B42/02A61B6/00H04N1/00H04N5/30
    • H04N5/30
    • In a radiation image read-out method and apparatus, a stimulable phosphor sheet carrying a radiation image stored thereon is exposed to stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and the emitted light is photoelectrically detected. When radiation image read-out is conducted on a stimulable phosphor sheet subjected to subdivision image recording carried out by exposing many subdivisions on the stimulable phosphor sheet respectively to a radiation in radiation image recording, the respective subdivisions are discriminated on the basis of information on subdivision image recording. Conditions of image processing are determined for the respective discriminated subdivisions, and are adjusted for the respective subdivisions when image processing is conducted.
    • 在放射线图像读取方法和装置中,将存储在其上的放射线图像的可刺激的荧光体片暴露于刺激光线,使得可激发的荧光体片材与存储的辐射能量成比例地发光,并且发射的光被光电检测 。 当通过将可刺激的磷光体片上的许多细分分别暴露于放射线图像记录中的辐射而进行细分图像记录的可刺激的磷光体片上进行放射线图像读出时,基于关于细分的信息来区分相应的细分 图像记录。 对于各个被鉴别的细分确定图像处理的条件,并且当进行图像处理时针对各个细分进行调整。
    • 74. 发明授权
    • Method of measuring shading characteristics in image information reading
apparatus with a test recording medium
    • 用测试记录介质测量图像信息读取装置中的阴影特征的方法
    • US4860116A
    • 1989-08-22
    • US256947
    • 1988-10-13
    • Nobuyoshi Nakajima
    • Nobuyoshi Nakajima
    • G01N21/88G03B42/02G06T1/00H04N1/113H04N1/401
    • H04N1/401
    • Test image information is recorded on a test recording medium and the test recording medium is scanned with a light beam to produce an image signal in each of two modes in which the test recording medium is oriented such that a prescribed line on the test recording medium extends in a main scanning direction and an auxiliary scanning direction substantially normal to the main scanning direction respectively in the two modes. A signal level distribution A(x) is determined along the prescribed line of a signal indicative of a logarithmic function of an output signal from a light detector when the prescribed line extends along the main scanning direction, and a signal level distribution B(x) along the prescribed line of a signal indicative of a logarithmic function of an output signal from the light detector when the prescribed line extends along the auxiliary scanning direction (x indicates a pixel position on the prescribed line). Shading characteristics of an image information reading apparatus along the main scanning direction are determined based on the difference A(x)-B(x) between the signal level distributions A(x) and B(x).
    • 将测试图像信息记录在测试记录介质上,并用光束扫描测试记录介质,以在测试记录介质定向的两种模式中的每一种中产生图像信号,使得测试记录介质上的规定行延伸 在两个模式中分别在主扫描方向和大致垂直于主扫描方向的辅助扫描方向上。 沿规定的线沿着主扫描方向延伸时,沿指示来自光检测器的输出信号的对数函数的信号的规定行确定信号电平分布A(x),信号电平分布B(x) 沿着辅助扫描方向(x表示规定线上的像素位置)指示来自光检测器的输出信号的对数函数的信号的规定行。 基于信号电平分布A(x)和B(x)之间的差异A(x)-B(x)来确定沿着主扫描方向的图像信息读取装置的阴影特性。
    • 75. 发明授权
    • Apparatus for recording a radiation image of an object on a stimulable
phosphor sheet to facilitate later reconstruction of an arbitrary
tomographic image of the object
    • 用于将物体的辐射图像记录在可刺激的荧光粉片上以便于稍后重建物体的任意断层图像的装置
    • US4853540A
    • 1989-08-01
    • US870952
    • 1986-06-05
    • Nobuyoshi Nakajima
    • Nobuyoshi Nakajima
    • A61B6/00A61B6/02G01T1/00G01T1/29G03B42/02H04N1/00
    • A61B6/02G01T1/2012G03B42/02
    • A radiation image recording apparatus comprises a radiation source for emitting a radiation to an object, a device for moving the radiation source to change the irradiation angle, a sheet changer for feeding a stimulable phosphor sheet to an image recording position exposed to the radiation passing through the object to have a radiation image of the object stored on the stimulable phosphor sheet and then receiving a drive signal to remove the stimulable phosphor sheet from the image recording position and feed a next stimulable phosphor sheet thereto, and a device for moving the sheet changer so that the stimulable phosphor sheet at the image recording position and the radiation source satisfy the linear rule and the geometric rule with respect to a point within the object or in the vicinity thereof. A controller controls operations of the devices for moving the sheet changer and the radiation source, intermittently activates the radiation source to emit the radiation at different irradiation angles, and sends the drive signal to the sheet changer after the radiation source is activated.
    • 放射线图像记录装置包括用于向物体发射辐射的辐射源,用于移动辐射源以改变照射角度的装置,用于将可刺激荧光粉片馈送到暴露于穿过的辐射的图像记录位置的片材更换器 该物体具有存储在可刺激的荧光体片材上的物体的放射线图像,然后接收驱动信号以从图像记录位置移除可刺激的荧光体片材,并将下一个可刺激的磷光体片材供给到其上,以及用于移动片材更换器的装置 使得在图像记录位置和辐射源处的可刺激的荧光体片材满足关于物体内或其附近的点的线性规则和几何规则。 控制器控制用于移动纸张更换器和辐射源的装置的操作,间歇地激活辐射源以以不同的照射角发射辐射,并且在辐射源被激活之后将驱动信号发送到纸张更换器。
    • 77. 发明授权
    • Radiation image recording and read-out apparatus
    • 辐射图像记录和读出装置
    • US4774409A
    • 1988-09-27
    • US787099
    • 1985-10-15
    • Takaaki YamamotoTerumi MatsudaKaoru TamuraNobuyoshi Nakajima
    • Takaaki YamamotoTerumi MatsudaKaoru TamuraNobuyoshi Nakajima
    • G01T1/29G03B42/02G03C5/16
    • G03B42/02G01T1/2012
    • In a radiation image recording and read-out apparatus, stimulable phosphor sheets are circulated along a predetermined circulation path through an image recording section for recording a radiation image of an object on the stimulable phosphor sheet by exposing the stimulable phosphor sheet to radiation through the object, an image read-out section including a stimulating ray source which is disposed in the circulation path and emits stimulating rays for scanning the stimulable phosphor sheet and a photoelectric converter which receives light emitted from the stimulable phosphor sheet to obtain an image signal and an erasing section for releasing residual radiation energy in the stimulable phosphor sheet before the stimulable phosphor sheet is returned to the image recording section. A cleaning sheet having thereon an adhesive material layer is transferred along the circulation path.
    • 在放射线图像记录和读出装置中,可刺激的荧光体片通过图像记录部分沿着预定的循环路径循环,该图像记录部分通过将可刺激的荧光体片暴露于穿过物体的辐射来记录被刺激的荧光体片上的物体的放射线图像 图像读出部,其包括设置在循环路径中并且发射用于扫描可刺激的荧光体片的刺激光线的刺激射线源;以及光电转换器,其接收从可刺激的荧光体片发射的光以获得图像信号和擦除 在可刺激的磷光体片返回到图像记录部分之前,释放可刺激的荧光体片中的剩余辐射能量的部分。 其上具有粘合剂层的清洁片沿循环路径传送。