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51. 发明专利

JPH0584234A X-RAY FLUOROSCOPIC PHOTOGRAPHING DEVICE 失效
公开(公告)号：JPH0584234A
公开(公告)日：1993-04-06
申请号：JP27666891
申请日：1991-09-28
申请人： SHIMADZU CORP
发明人： SHIOMI TAKESHI , SHIBATA KOICHI
IPC分类号： A61B6/00
摘要： PURPOSE:To provide the X-ray fluoroscopic photographing device which corrects a rotational distortion of an image generated on the I.I. output surface by influence of earth magnetism at the time of photographing in an X-ray radiographing table and can be compared exactly with other photographing device, as well. CONSTITUTION:In the X-ray fluoroscopic photographing device in which a fluoroscopic photographing table on which an image intensifier 2 and an X-ray television camera 4 which can be raised and laid down is installed, this device is provided with a raising/laying-down angle detecting means of the fluoroscopic photographing table, a correcting signal generating means 5 for storing rotational distortion correction data of an image intensifier 2 output image to a raising/ laying-down angle of the fluoroscopic photographing table and outputting a rotational distortion correcting signal, based on an angle signal of the detecting means, and a control means for controlling an X-ray television camera 4 by an output of the correcting signal generating means.

52. 发明专利

JPH02222273A X-RAY TELEVISION CAMERA 失效
公开(公告)号：JPH02222273A
公开(公告)日：1990-09-05
申请号：JP4245589
申请日：1989-02-22
申请人： SHIMADZU CORP
发明人： SHIBATA KOICHI , GOTO NOBUHISA
IPC分类号： A61B6/00 , H04N5/228 , H04N5/321
摘要： PURPOSE:To reduce coma distortion in an X-ray tomography by generating a vertical and a horizontal deflection signal respectively to scan the scanning region of a charge image on an image pickup face not in a rectangular form but in a inverted parabolic form for each side ridge. CONSTITUTION:A horizontal parabolic signal is converted by an amplitude modulator 5 in a way that the signal above the amplitude center of a vertical sawtooth wave is to be negative and the signal under the center is to be positive and the amplitude is increased as the signal is parted from the center and the resulting signal is added to the vertical sawtooth wave at an adder 6, from which a vertical deflection signal is outputted. A horizontal sawtooth wave is converted by a nonlinear waveform converter 7 into a waveform where the inclination is increased as the signal is parted from the amplitude center and the amplitude is increased as the signal is parted from the amplitude center of the vertical sawtooth wave by an amplitude modulator 8 and becomes a horizontal deflection signal. Thus, in the case of television camera pickup using an image intensifier, the X-ray tomography image with less distortion is obtained on a monitor at all times.

53. 发明专利

JPH0223117B2 失效
公开(公告)号：JPH0223117B2
公开(公告)日：1990-05-22
申请号：JP24749883
申请日：1983-12-29
申请人： SHIMADZU CORP
发明人： NISHIOKA HIROYUKI , SHIBATA KOICHI
IPC分类号： G01N23/04 , A61B6/00 , H04N7/18

54. 发明专利

JPH01222382A PICTURE CONTRAST PROCESSOR 失效
公开(公告)号：JPH01222382A
公开(公告)日：1989-09-05
申请号：JP4821288
申请日：1988-02-29
申请人： SHIMADZU CORP
发明人： SHIBATA KOICHI
IPC分类号： A61B6/00 , G06T1/00 , G06T5/00 , H05G1/64
摘要： PURPOSE:To automatically perform contrast processing so as to make a picture easiest to see by adjusting automatically histogram equalization. CONSTITUTION:When a histogram is compressed in the direction of the number of picture elements by a compressor 2, and the difference of the integrated values of the histogram before and after compression is obtained by a subtracter 3, the total number of compressed picture elements is obtained. The mean value of them is obtained, and by adding it by an adder 4 by biasing it equally to the histogram after the compression, the new histogram is generated. When the histogram equalization of the picture is performed by this new histogram, only a usual histogram equalization is performed in case of the picture where no peak of the histogram is present. On the contrary, when the histogram is only the peak linear gradation conversion is performed, and in case of intermediate, the gradation conversion intermediate between the usual histogram equalization and the linear conversion is performed corresponding to its degree.

55. 发明专利

JPS63300742A DIGITAL X-RAY APPARATUS 失效
公开(公告)号：JPS63300742A
公开(公告)日：1988-12-07
申请号：JP13786687
申请日：1987-05-31
申请人： SHIMADZU CORP
发明人： WANI HIDENOBU , SHIBATA KOICHI
IPC分类号： G01N23/04 , A61B6/00 , G01T1/00 , G01T1/161 , G03B42/02 , G06T1/00 , H04N5/32 , H04N5/321 , H04N7/18
摘要： PURPOSE:To process a highly detailed X-ray image high in spatial resolving power at a high speed in real time, by processing image data at every plural pixels. CONSTITUTION:The X-ray image data from a television camera 4 is applied to the A/D converter 6 of an image processor 5 and inputted to an operational processor 7 at a unit of two adjacent pixels from the A/D converter 6. The image data processed at the two-pixel unit in this operational processor 7 is inputted to a scanning conversion memory 8 and the image data sent out at a 16-pixel unit from the scanning conversion memory 8 is sent to a monitor television apparatus 10 through a D/A converter 9.

56. 发明专利

JPS63270030A DIGITAL X-RAY APPARATUS 失效
公开(公告)号：JPS63270030A
公开(公告)日：1988-11-08
申请号：JP10534387
申请日：1987-04-28
申请人： SHIMADZU CORP
发明人： SHIBATA KOICHI , NISHIOKA HIROYUKI
IPC分类号： A61B6/00 , H04N5/325
摘要： PURPOSE:To obtain an image containing detailed data with respect to all of the areas thereof and having high diagnostic value, by applying weighting to X-ray images continuously picked up under different image pickup conditions to add the same. CONSTITUTION:The X-ray image of the subject 11 irradiated with X-rays from an X-ray tube 10 is digitized by an A/D converter 1 through a TV camera 13. At this time, two images obtained by performing the irradiation with X-rays two times at high and low voltages are respectively stored in frame memories 2, 3. For example, the high voltage picked-up image lowers in the contrast of a lung field part A and the microstructure of a heart part B is extracted. The entire region of the heart part B is erased in the low voltage picked-up image and the microstructure of the lung field part A is extracted. Hereupon, both images are increased by K-times and (1-K) times by multipliers 4, 5 to be added by an adder 6. The addition output is displayed on a TV monitor as an image uniformly containing the microstructures of both areas by a D/A converter 7.

57. 发明专利

JPS6230493A DIGITAL SUBTRACTION DEVICE 失效
公开(公告)号：JPS6230493A
公开(公告)日：1987-02-09
申请号：JP16922285
申请日：1985-07-31
申请人： SHIMADZU CORP
发明人： SHIBATA KOICHI
IPC分类号： H04N7/18 , A61B6/00 , G01N23/04
摘要： PURPOSE:To find out the speed of flow of blood by designating optional two points of upper stream and downstream of a blood vessel finding the difference in time at which a part of highest concentration of a contrast medium passed the points, and dividing the distance between the two points by the time difference. CONSTITUTION:The contents of a frame memory 7 are converted to analog signals by a D/A convertor 8 and sent to a picture display device 9, and accordingly, the locus of a contrast medium, i.e. the image of a blood vessel is displayed. One point P1 in the upperstream of the blood vessel and one point P2 in the downstream are pointed by a coordinate pointing device such as a light pen, etc. A processor 12 reads out time stored in a frame memory 11 at picture elements corresponding to points P1, P2 and determines the time difference. On the other hand, the processor 12 finds out the distance between points P1, P2, and divides the distance by above-mentioned time difference. Thus, the speed of moving of the peak of concentration of the contrast medium from the point P1 to point P2 is determined as the speed of blood flow, and displayed on a proper part of the picture.

58. 发明专利

JPS61249447A STEREOSCOPIC X-RAY FLUOROSCOPIC APPARATUS 失效
公开(公告)号：JPS61249447A
公开(公告)日：1986-11-06
申请号：JP9318985
申请日：1985-04-30
申请人： SHIMADZU CORP
发明人： SHIBATA KOICHI , NISHIOKA HIROYUKI
IPC分类号： G01N23/04 , A61B6/02

59. 发明专利

JP2013022309A Image evaluation method and x-ray fluoroscopic equipment using it 有权
标题翻译：使用它的图像评估方法和X射线荧光设备
公开(公告)号：JP2013022309A
公开(公告)日：2013-02-04
申请号：JP2011161063
申请日：2011-07-22
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SHISHIKURA TAKUHITO , MORI KAZUHIRO , SHIBATA KOICHI
IPC分类号： A61B6/00
摘要： PROBLEM TO BE SOLVED: To provide an image evaluation method which can quantitatively show the visibility of low contrast and a fine line object for clinical practice, and X-ray fluoroscopic equipment using it.SOLUTION: In an image evaluation method and X-ray fluoroscopic equipment 1 using it, an image which suppresses noise components can be created by averaging the X-ray fluoroscopic image of two or more frames. Therefore, because the edge part is not buried in the noise component even when the difference of pixel values between the edge part of a metal plate 11 and an object M under test is small and low contrast, an appropriate peak value can be obtained from an edge weighted image. Also, the peak value of the edge part is obtained from the edge-weighted image. Because the peak value indicates such a large value that the edge part in an average image is not blurry and is sharp, it permits the correlation of an index value which is calculated by dividing the peak value with standard deviation can correlate with the visibility of a low contrast and fine line object.
摘要翻译：要解决的问题：提供可以定量显示用于临床实践的低对比度和细线对象的可视性的图像评估方法，以及使用它的X射线荧光检查设备。解决方案：在使用它的图像评估方法和X射线透视设备1中，可以通过对两个或更多个帧的X射线透视图像进行平均来创建抑制噪声分量的图像。因此，即使当金属板11的边缘部分和被测试物体M之间的像素值的差小且对比度低时，边缘部分也不会被埋在噪声分量中，所以可以从边缘加权图像。此外，从边缘加权图像获得边缘部分的峰值。由于峰值表示平均图像中的边缘部分不模糊且锐利的值很大，所以允许通过将峰值除以标准偏差计算的指标值与相关的可见度相关联低对比度和细线对象。版权所有（C）2013，JPO＆INPIT

60. 发明专利

JP2009297292A Radiation tomographic apparatus and method of removing noise in radiation tomographic apparatus 有权
标题翻译：辐射全息图装置及其在放射性测量装置中的消除噪声的方法
公开(公告)号：JP2009297292A
公开(公告)日：2009-12-24
申请号：JP2008155671
申请日：2008-06-13
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： NOTOHARA DAISUKE , NISHINO KAZUYOSHI , KATO MIKIHIKO , SHIBATA KOICHI
IPC分类号： A61B6/06 , A61B6/02
摘要： PROBLEM TO BE SOLVED: To provide a radiation tomographic apparatus where the radiotransparent fault image of the radiation grid is not reflected in the radiation tomographic image regardless of the cutting position. SOLUTION: An X-ray grid 8 is relatively moved to FPD so as to change the position where the X-ray transparent fault image of the X-ray grid 8 is reflected into FPD while the X-ray transparent image is successively taken. Additionally, the X-ray grid 8 is not followed to the X-ray image of the subject in the grid unmoved cutting position, and the appearance position of the transparent fault image which the X-ray grid 8 has is moved to the X-ray image of the subject in the grid unmoved cutting position while the X-ray transparent image is successively taken, and the X-ray transparent fault image of the X-ray grid 8 is not reflected into the X-ray tomographic image. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种放射线断层摄影装置，其中辐射网格的无线电透射性故障图像不会在辐射断层图像中反射，而与切割位置无关。解决方案：X射线栅格8相对移动到FPD，以便将X射线网格8的X射线透明故障图像反射到FPD中的位置改变，同时X射线透明图像被连续地被采取。此外，在栅格不动切割位置，X射线格栅8不跟随被检体的X射线图像，X射线格栅8具有的透明故障图像的出现位置移动到X射线，连续拍摄X射线透明图像时的网格不动切割位置的被摄体的X射线图像，X射线格栅8的X射线透明的故障图像不会反射到X射线断层图像中。版权所有（C）2010，JPO＆INPIT

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