-
公开(公告)号：US4851675A
公开(公告)日：1989-07-25
申请号：US920179
申请日：1986-10-17
CPC分类号： H04N1/4074 , G01T1/2014 , G03B42/02
摘要： 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 by a photodetector to obtain image signals. The detection range of the photodetector for the emitted light is adjusted to a range substantially wider than an expected light emission range. The image signals obtained with the detection range by the photodetector is stored in a storage device, and sent to a histogram analysis device for creating a histogram of the image signals and analyzing image input information on the stimulable phosphor sheet based on the histogram. An image signal in a range useful for reproduction of a visible image is extracted from the image signals stored in the storage device on the basis of the image input information obtained by the histogram analysis device, and utilized for reproducing the visible image.
摘要翻译： 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 通过光电检测器获得图像信号。 用于发射的光的光检测器的检测范围被调整到比预期的发光范围宽得多的范围。 通过光电检测器检测范围获得的图像信号被存储在存储装置中，并被发送到直方图分析装置，用于创建图像信号的直方图，并且基于直方图分析可刺激的磷光体片上的图像输入信息。 基于由直方图分析装置获得的图像输入信息，从存储在存储装置中的图像信号中提取对可见图像的再现有用的范围内的图像信号，并用于再现可视图像。
-
公开(公告)号：US4748326A
公开(公告)日：1988-05-31
申请号：US947220
申请日：1986-12-29
申请人： Nobufumi Mori , Shigeru Saotome , Hideo Watanabe , Kazuo Shimura
发明人： Nobufumi Mori , Shigeru Saotome , Hideo Watanabe , Kazuo Shimura
CPC分类号： H04N1/40068 , G01T1/2014
摘要： A radiation image read-out apparatus is constituted for scanning a stimulable phosphor sheet carrying a radiation image stored thereon with a beam of stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and photoelectrically detecting the light emitted by a stimulable phosphor sheet portion scanned with the beam of stimulating rays by use of a photodetector to obtain an image signal. The radiation image read-out apparatus is constituted so that the beam diameter of the beam of stimulating rays is adjusted to be smaller than a picture element size and each of picture elements is scanned by a plurality of scanning passes with the beam of stimulating rays. An addition device is provided for adding a plurality of image signals per picture element obtained by the plurality of scanning passes.
摘要翻译： 一种放射线图像读取装置，用于扫描携带其上存储的放射线图像的可刺激的荧光片，其中激发光束使得可刺激的荧光体片材与存储的辐射能量成比例地发光，并且光电检测发射的光 通过使用光电检测器用刺激光束扫描的可刺激的磷光体片部分以获得图像信号。 辐射图像读取装置被构造成使得刺激光束的光束直径被调节为小于像素尺寸，并且通过激发光线的多个扫描遍扫描每个图像元素。 提供了一种添加装置，用于通过多次扫描通过获得的每个图像元素添加多个图像信号。
-
公开(公告)号：US4835386A
公开(公告)日：1989-05-30
申请号：US919689
申请日：1986-10-16
申请人： Kazuo Shimura , Nobufumi Mori , Shigeru Saotome , Ryoichi Yoshimura , Hideo Watanabe , Yuichi Hosoi
发明人： Kazuo Shimura , Nobufumi Mori , Shigeru Saotome , Ryoichi Yoshimura , Hideo Watanabe , Yuichi Hosoi
CPC分类号： G03B42/02 , G01T1/2012
摘要： A radiation image recording and read-out apparatus comprises a case housing a stimulable phosphor sheet and having an opening, a light shielding cover housed in the case for projection therefrom through the opening, a recording section for exposing the stimulable phosphor sheet disposed at an exposure position in the light shielding cover projected out of the case to radiation, and a read-out section having a sub-scanning system for moving the stimulable phosphor sheet between the exposure position and a position in the case. Or, the apparatus comprises a case having an opening for passing the stimulable phosphor sheet therethrough, a recording section for exposing the stimulable phosphor sheet disposed at the exposure position in the case to radiation, and a read-out section having a sub-scanning system for moving the stimulable phosphor sheet between the exposure position and a position projected out of the case. Alternatively, the apparatus comprises a sheet feed system for reciprocating a strip-like flexible stimulable phosphor sheet between first and second wind-up shafts, and a recording section for exposing the stimulable phosphor sheet disposed between the first and second wind-up shafts to radiation.
摘要翻译： 放射线图像记录和读出装置包括容纳可刺激的荧光体片并具有开口的壳体，容纳在壳体中的遮光盖，用于通过该开口从其突出;记录部分，用于暴露以曝光设置的可激发荧光粉片 并且具有副扫描系统的读出部，该辅助扫描系统用于在曝光位置和外壳中的位置之间移动可刺激的荧光体片。 或者，该装置包括具有用于使可刺激的荧光体片通过的开口的壳体，用于将设置在外壳中的曝光位置处的可刺激的荧光体片曝光的记录部分，以及具有副扫描系统的读出部分 用于将可刺激的荧光体片材在曝光位置和从外壳伸出的位置之间移动。 或者，该装置包括用于使第一和第二卷绕轴之间的条状柔性可刺激磷光体片往复运动的片材进给系统和用于将设置在第一和第二卷绕轴之间的可刺激磷光体片暴露于辐射的记录部分 。
-
公开(公告)号：US06542771B2
公开(公告)日：2003-04-01
申请号：US09875914
申请日：2001-06-08
申请人： Shigeru Saotome , Kazuo Shimura , Takeshi Ohkubo
发明人： Shigeru Saotome , Kazuo Shimura , Takeshi Ohkubo
IPC分类号： A61B505
CPC分类号： G06T7/0012
摘要： A primary prospective abnormal shadow is detected in each of at least two radiation images of an object taken in different directions. Only primary prospective abnormal shadows which are detected in the respective radiation images and are in substantially the same position on the object is taken as a final prospective abnormal shadow.
-
公开(公告)号：US4896037A
公开(公告)日：1990-01-23
申请号：US912208
申请日：1986-09-25
CPC分类号： G03B42/021
摘要： A high-speed image recording apparatus comprises a sheet changer for changing a stimulable phosphor sheet at an image recording position, a radiation source drive controller, and a filter changer for changing a radiation filter on a radiation passage between a radiation source and a stimulable phosphor sheet at each image recording step. The sheet changer, the radiation source drive controller and the filter changer are activated by signals sent from a controller to load the stimulable phosphor sheet to the image recording position, to change over the radiation filter, and then to emit radiation to the stimulable phosphor sheet via an object, thereby recording a high energy image and a low energy image of good energy discrimination in stimulable phosphor sheets.
摘要翻译： 高速图像记录装置包括用于在图像记录位置改变可刺激的荧光体片材的片材更换器，辐射源驱动控制器和用于改变辐射源和可刺激荧光体之间的辐射通道上的辐射滤光器的滤光器更换器 在每个图像记录步骤。 片材更换器，辐射源驱动控制器和滤波器更换器由从控制器发送的信号激活，将可刺激的荧光粉片装载到图像记录位置，以转换辐射过滤器，然后将辐射发射到可刺激的磷光体片 从而在可刺激的荧光体片材中记录高能量图像和良好能量鉴别的低能量图像。
-
公开(公告)号：US5028781A
公开(公告)日：1991-07-02
申请号：US116196
申请日：1987-11-03
CPC分类号： G06T5/50 , G01T1/2014 , H04N1/4074
摘要： In an energy subtraction processing for radiation images conducted by use of stimulable phosphor sheets, a characteristic value of a difference signal obtained by a subtraction processing of digital image signals detected from the stimulable phosphor sheets carrying radiation images stored therein is calculated. When the difference signal is subjected to a gradation processing, the characteristic value is made to correspond to a predetermined density of a reproduced image by uniformly converting the difference signal or by correcting a gradation conversion table used for the gradation processing.
摘要翻译： 在通过使用可刺激的荧光体片进行的放射线图像的能量减除处理中，计算通过对从携带其中存储的辐射图像的可刺激的磷光体片材检测的数字图像信号的减法处理而获得的差分信号的特征值。 当差分信号进行灰度处理时，通过均匀地转换差分信号或校正用于灰度处理的灰度转换表，使特征值对应于再现图像的预定浓度。
-
公开(公告)号：US4777373A
公开(公告)日：1988-10-11
申请号：US82930
申请日：1987-08-10
申请人： Kazuo Shimura , Masamitsu Ishida
发明人： Kazuo Shimura , Masamitsu Ishida
CPC分类号： G01T1/2012 , Y10T307/944
摘要： A built-in type radiation image and read-out apparatus comprises a circulating and conveying means for repeatedly conveying stimulable phosphor sheets through an image recording section, an image read-out section and an erasing section. The image recording section has a transfer means for adjusting the distance between an object support member and a stimulable phosphor sheet retainer, whereby recording of enlarged radiation image is possible.
摘要翻译： 内置型放射线图像和读出装置包括用于通过图像记录部分，图像读出部分和擦除部分反复地传送可刺激的磷光体片的循环和传送装置。 图像记录部分具有用于调节对象支撑构件和可刺激的荧光体片保持器之间的距离的转印装置，由此可以记录放大的图像。
-
8.发明授权Energy subtraction processing method using weighted average of plural stacked sheets for creating high energy image 失效能量减法处理方法使用加权平均多张堆叠片材来产生高能量图像
公开(公告)号：US5029083A
公开(公告)日：1991-07-02
申请号：US467293
申请日：1990-01-16
摘要： In an energy subtraction processing for radiation images, a plurality of stimulable phosphor sheets laid one upon the other are simultaneously exposed to a radiation of high energy passing through an object, and then a different stimulable phosphor sheet is exposed to a radiation of low energy passing through the same object. Digital image signals detected from the stimulable phosphor sheets exposed to the high energy radiation are weighted and subjected to arithmetic averaging. A subtraction processing is carried out between an image signal obtained by the arithmetic averaging and an image signal detected from the stimulable phosphor sheet exposed to the low energy radiation.
摘要翻译： 在放射线图像的能量减除处理中，将多个彼此叠置的可激发的荧光体片同时暴露于穿过物体的高能量的辐射，然后将不同的可刺激的荧光体片暴露于低能量通过的辐射 通过相同的对象。 从暴露于高能量辐射的可刺激的磷光体板检测到的数字图像信号被加权并进行算术平均。 在通过算术平均获得的图像信号和从暴露于低能量辐射的可激励荧光粉片检测到的图像信号之间进行减法处理。
-
公开(公告)号：US4914295A
公开(公告)日：1990-04-03
申请号：US302992
申请日：1989-01-30
申请人： Kazuo Shimura , Masamitsu Ishida
发明人： Kazuo Shimura , Masamitsu Ishida
CPC分类号： G01T1/2014 , G06T5/009 , G06T5/40 , G06T2207/10116
摘要： An apparatus for photoelectrically detecting a radiation image of an object stored on a stimulable phosphor sheet by exposure to a radiation passing through the object and storing detected image signals comprises a circuit for recognizing an irradiation field on the stimulable phosphor sheet, and an image signal selection circuit for receiving irradiation field information generated by the irradiation field recognition circuit and selecting only the image signals inside of the irradiation field from the read-out image signals. Or, the apparatus comprises a section for creating a histogram of the read-out image signals, a histogram analysis section for determining a range of the read-out image signals outside of a peak region arising in the vicinity of the maximum signal value or the minimum signal value in the histogram, and an image signal selection circuit for receiving the output of the histogram analysis section and selecting only the image signals within the range from the read-out image signals.
摘要翻译： 一种用于通过暴露于穿过物体的辐射并存储检测到的图像信号来光电检测存储在可刺激的荧光粉片上的物体的放射线图像的装置包括用于识别可刺激的荧光粉片上的照射场的电路和图像信号选择 电路，用于接收由照射场识别电路产生的照射场信息，并且仅从读出的图像信号中仅选择照射场内的图像信号。 或者，该装置包括用于创建读出的图像信号的直方图的部分，用于确定在最大信号值附近出现的峰值区域之外的读出图像信号的范围的直方图分析部分， 直方图中的最小信号值，以及用于接收直方图分析部分的输出并仅从读出的图像信号中选择该范围内的图像信号的图像信号选择电路。
-
公开(公告)号：US4859849A
公开(公告)日：1989-08-22
申请号：US787846
申请日：1985-10-16
申请人： Kazuo Shimura , Masamitsu Ishida
发明人： Kazuo Shimura , Masamitsu Ishida
CPC分类号： G03B42/02 , G01T1/2012 , H05G1/26
摘要： A radiation image recording and read-out apparatus comprises a circulation transfer means for transferring a stimulable phosphor sheet along a predetermined circulation path; an image recording section which is disposed in the circulation path and in which a radiation image of an object is recorded on the stimulable phosphor sheet by exposing the stimulable phosphor sheet to radiation passing through the object; an image read-out section which is disposed in the circulation path for scanning the stimulable phosphor sheet with stimulating rays and detecting light emitted from the stimulable phosphor sheet to obtain an image signal; and an erasing section which is disposed in the circulation path and releases residual radiation energy in the stimulable phosphor sheet before the stimulable phosphor sheet is returned to the image recording section. The radiation image recording and read-out apparatus further includes a radiation quality changing filter for changing the quality of the radiation. The filter is arranged to be inserted into or retracted away from the path of the radiation in synchronization with the operation of a stimulable phosphor sheet changing mechanism for discharging one stimulable phosphor sheet from the recording position in the image recording section and positioning another sheet in the recording section.
摘要翻译： 辐射图像记录和读出装置包括：循环传送装置，用于沿着预定的循环路径传送可刺激的荧光粉片; 图像记录部，其设置在所述循环路径中，并且通过将所述可刺激的荧光体片暴露于穿过所述物体的辐射而将所述物体的放射线图像记录在所述可刺激的荧光体片上; 图像读出部，其设置在循环路径中，用于以刺激光线扫描可刺激的荧光体片，并检测从可刺激的荧光体片发射的光以获得图像信号; 以及擦除部，其设置在循环路径中，并且在可刺激的磷光体片返回到图像记录部之前释放可刺激的荧光体片中的残留辐射能。 放射线图像记录和读出装置还包括用于改变辐射质量的辐射质量改变滤波器。 该过滤器被布置成与用于从图像记录部分中的记录位置排出一个可刺激的磷光体片的可刺激的磷光体片改变机构的操作同步地插入或缩回远离辐射的路径，并将另一个片材定位在 录音部分。
-
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.023 秒)
