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1. 发明授权

US5427100A Method for determining median line 失效
标题翻译：方法确定中线
公开(公告)号：US5427100A
公开(公告)日：1995-06-27
申请号：US12919
申请日：1993-02-03
申请人： Noboru Higashi , Koichi Sano , Tetsuo Yokoyama
发明人： Noboru Higashi , Koichi Sano , Tetsuo Yokoyama
IPC分类号： A61B5/055 , G01R33/48 , G01R33/54 , G01R33/56
CPC分类号： G01R33/56
摘要： Disclosed is a method for automatically determining the median line of a selected region of a human body so as to simplify complex imaging required hithero for a magnetic resonance imaging apparatus, and, in the method, an artifact of the imaged selected region of the human body is utilized to automatically determine the median line. For example, two artifacts 1010 and 1020 intersecting each other appear from the superior sagittal sinus as shown in FIG. 1 when the direction of phase encoding is changed. By subtracting one of these artifacts 1010 and 1020 from the other and calculating the absolute value of the result of subtraction, the point 1030 of intersection of the artifacts determines the location of the superior sagittal sinus which is the source of apperance of the artifacts, so that the median line can be automatically determined on the basis of the result of determination of location of the superior sagittal sinus.
摘要翻译：公开了一种用于自动确定人体所选择的区域的中线的方法，以便简化对于磁共振成像设备所需的复合成像所需的触角，并且在该方法中，人体的成像选定区域的假象用于自动确定中线。例如，如图1所示，从上矢状窦出现两个彼此相交的假象1010和1020。 1当相位编码的方向改变时。通过从另一个中减去这些伪影1010和1020中的一个并计算减法结果的绝对值，伪像的交点点1030确定作为人造物的外观源的上矢状窦的位置，因此可以根据确定上矢状窦位置的结果自动确定中线。

2. 发明授权

US5748193A Flat pattern image generation of internal structure data 失效
标题翻译：平面图形图像生成内部结构数据
公开(公告)号：US5748193A
公开(公告)日：1998-05-05
申请号：US514266
申请日：1995-08-11
申请人： Noboru Higashi , Koichi Sano
发明人： Noboru Higashi , Koichi Sano
IPC分类号： G06T3/00 , G06T1/00 , G06T15/00 , G06T19/00 , G06T15/10
CPC分类号： G06T15/10
摘要： Three-dimensional image data of an object is generated by an x-ray CT or magnetic resonance imaging system, and used to produce a flat pattern of the whole surface image of the object. An imaginary slit is provided in a three-dimensional space of the three-dimensional image data, and the image seen through this slit is generated by volume rendering. The above operation is repeated as this imaginary slit is moved along the periphery of the object of the three-dimensional image data. The generated image data are arranged laterally to produce a flat pattern. All the three-dimensional image data are not processed by volume rendering, but only the portion limited to a depth is processed to prevent the structure information of the rear side of the object from being mixed in the flat pattern.
摘要翻译：物体的三维图像数据由X射线CT或磁共振成像系统产生，用于产生物体的整个表面图像的平坦图案。在三维图像数据的三维空间中设置虚拟狭缝，并且通过体积绘制产生通过该狭缝看到的图像。重复上述操作，因为该虚拟狭缝沿着三维图像数据的对象的周边移动。生成的图像数据被横向布置以产生平坦图案。所有三维图像数据都不会通过体绘制进行处理，而只处理限于深度的部分，以防止对象背面的结构信息在平面图案中混合。

3. 发明授权

US5553207A Method of and apparatus for region extraction in three-dimensional voxel data 失效
标题翻译：三维体元数据中区域提取的方法和装置
公开(公告)号：US5553207A
公开(公告)日：1996-09-03
申请号：US249045
申请日：1994-05-24
申请人： Hiroyuki Sekiguchi , Koichi Sano , Tetsuo Yokoyama
发明人： Hiroyuki Sekiguchi , Koichi Sano , Tetsuo Yokoyama
IPC分类号： G06T5/00 , G06F15/00
CPC分类号： G06T7/0081 , G06T7/0012 , G06T2207/10072 , G06T2207/10088 , G06T2207/10116 , G06T2207/20101 , G06T2207/30004 , G06T2207/30008
摘要： In a region extraction to be achieved by a concatenated region expansion processing, to improve reliability of extraction results and to reduce loads imposed on the operator, when a region other than an objective region is extracted as a result of the region extraction, a point belonging to the region other than the objective region is specified in a three-dimensional display image to execute deletion of the overflow region.
摘要翻译：在通过级联区域扩展处理实现的区域提取中，为了提高提取结果的可靠性并减少施加在操作者上的负担，当通过区域提取的结果提取除了目标区域之外的区域时，点属性在三维显示图像中指定到目标区域以外的区域，以执行溢出区域的删除。

4. 发明授权

US5319551A Region extracting method and three-dimensional display method 失效
标题翻译：区域提取方法和三维显示方法
公开(公告)号：US5319551A
公开(公告)日：1994-06-07
申请号：US602817
申请日：1990-10-24
申请人： Hiroyuki Sekiguchi , Koichi Sano , Tetsuo Yokoyama
发明人： Hiroyuki Sekiguchi , Koichi Sano , Tetsuo Yokoyama
IPC分类号： G01R33/32 , A61B5/055 , G01R33/28 , G06T1/00 , G06T5/20 , G06F15/66
CPC分类号： G06T5/20
摘要： In order to ensure that region extraction for extracting a specified internal organ can be effected with high reliability, a region expansion method is applied by using a combination of an expansion condition taking the local density change into consideration and an expansion condition taking the global density change into consideration.
摘要翻译：为了确保能够高可靠性地进行用于提取特定内脏的区域提取，通过使用考虑了局部密度变化的扩张条件和采用全局密度变化的扩张条件的组合来应用区域扩张法考虑到。

5. 再颁专利

USRE34495E NMR imaging method 失效
标题翻译： NMR成像方法
公开(公告)号：USRE34495E
公开(公告)日：1994-01-04
申请号：US725514
申请日：1991-07-03
申请人： Koichi Sano , Tetsuo Yokoyama , Ryuzaburo Takeda , Yasuhiko Ozawa , Shinichi Sato , Hideaki Koizumi
发明人： Koichi Sano , Tetsuo Yokoyama , Ryuzaburo Takeda , Yasuhiko Ozawa , Shinichi Sato , Hideaki Koizumi
IPC分类号： G01F1/716 , G01P5/00 , G01R33/563 , A61B5/055
CPC分类号： G01F1/716 , G01P5/00 , G01R33/56308 , G01R33/56316
摘要： A slice selection gradient magnetic field used in a pulse sequence for generating a spin echo signal is applied in such a fashion that its polarity at the time of a 90.degree. pulse becomes opposite to the one at the time of 180.degree. pulse, in order to expand a dynamic range of blood flow speed measurement. When the blood flow speed contains a component in a slice vertical direction, the gradient magnetic field in the slice vertical direction is adjusted so that the phase changes of two sets of flow encoded pulses contained in the slice vertical direction are opposite to each other.The flow speed in the direction of the readout gradient magnetic field, which is a lateral direction of the slice plane, is purely measured by canceling influences of the flow in the slice vertical direction.
摘要翻译：施加用于产生自旋回波信号的脉冲序列中的切片选择梯度磁场，使得其在90度脉冲时的极性与180度脉冲时的极性相反，以便扩大血流速度测量的动态范围。当血流速度包含切片垂直方向上的分量时，调整切片垂直方向上的梯度磁场，使得包含在切片垂直方向上的两组流动编码脉冲的相位变化彼此相反。通过消除切片垂直方向上的流动的影响，纯粹地测量作为切片平面的横向的读出梯度磁场的方向上的流速。

6. 发明授权

US5241271A Ultra-fast imaging method and apparatus 失效
标题翻译：超快速成像方法和装置
公开(公告)号：US5241271A
公开(公告)日：1993-08-31
申请号：US751970
申请日：1991-08-29
申请人： Jun'ichi Taguchi , Koichi Sano , Tetsuo Yokoyama
发明人： Jun'ichi Taguchi , Koichi Sano , Tetsuo Yokoyama
IPC分类号： A61B5/055 , G01R33/48 , G01R33/561
CPC分类号： G01R33/561
摘要： A magnetic resonance imaging apparatus selects a partial region of a slice in a subject with a radio frequency magnetic field and generates echo signals only from the partial region. The echo signals are collected from the subject by using an ultra-high speed data acquisition technique. An image of a partial region is reconstructed from the echo signals.
摘要翻译：磁共振成像装置用射频磁场选择被检体中的切片的局部区域，仅从部分区域产生回波信号。通过使用超高速数据采集技术从对象收集回波信号。从回波信号重建部分区域的图像。

7. 发明授权

US4915111A Blood flow imaging method 失效
标题翻译：血流成像法
公开(公告)号：US4915111A
公开(公告)日：1990-04-10
申请号：US170342
申请日：1988-03-18
申请人： Koichi Sano , Tetsuo Yokoyama , Ryuzaburo Takeda
发明人： Koichi Sano , Tetsuo Yokoyama , Ryuzaburo Takeda
IPC分类号： G01F1/716 , A61B5/0265 , A61B5/055 , G01P5/00 , G01R33/48 , G01R33/563 , G01R33/567
CPC分类号： G01R33/5673 , A61B5/0265 , G01P5/00 , G01R33/563
摘要： A sequence for detecting variations in the blood flow speed in the blood vessel is added before a measurement of imaging signals so as to determine the highest and/or the lowest speed points of time and an examined body is imaged two times at those timings. In this way the timing for setting the delay time measured from the R wave can be determined automatically and thus it is possible to obtain a blood vessel image of high quality in a short time with the minimum number of two images.
摘要翻译：在测量成像信号之前添加用于检测血管中血流速度的变化的顺序，以便确定最高和/或最低速度时间点，并且在该时刻对检查的身体成像两次。以这种方式，可以自动确定从R波测定的延迟时间的设定定时，从而可以在最短的两张图像的短时间内获得高质量的血管图像。

8. 发明授权

US4905699A Method and apparatus for NMR imaging 失效
标题翻译： NMR成像方法和装置
公开(公告)号：US4905699A
公开(公告)日：1990-03-06
申请号：US92303
申请日：1987-09-02
申请人： Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
发明人： Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
IPC分类号： A61B5/055
CPC分类号： A61B5/055 , A61B5/7257
摘要： In order to permit the detection of a respiratory motion and an imaging synchronized with the respiration by an NMR imaging apparatus itself without any special hardware, a sequence for detecting the respiratory motion is repeated for a short time immediately before the measurement of an image signal to detect the position and speed of the respiratory motion, and a desired image signal is measured in synchronism with the detected position. Alternatively, the respiratory motion is detected immediately after the measurement of an image signal, and the measured image signal is corrected in accordance with the detected amount to obtain a desired image signal synchronized with the respiration.
摘要翻译：为了允许通过NMR成像设备本身检测呼吸运动和与呼吸同步的成像，而没有任何特殊的硬件，用于检测呼吸运动的顺序在测量图像信号之前的短时间内被重复到检测呼吸运动的位置和速度，并且与检测到的位置同步地测量期望的图像信号。或者，在测量图像信号之后立即检测呼吸运动，并且根据检测到的量校正测量的图像信号，以获得与呼吸同步的期望的图像信号。

9. 发明授权

US4870362A Nuclear magnetic resonance imaging method and apparatus 失效
标题翻译：核磁共振成像方法及装置
公开(公告)号：US4870362A
公开(公告)日：1989-09-26
申请号：US133069
申请日：1987-12-15
申请人： Koichi Sano , Shimbu Yamagata , Tetsuo Yokoyama , Hideaki Koizumi
发明人： Koichi Sano , Shimbu Yamagata , Tetsuo Yokoyama , Hideaki Koizumi
IPC分类号： G01P13/00 , A61B5/0265 , A61B5/055 , A61B10/00 , G01R33/44 , G01R33/48 , G01R33/563 , G01R33/567 , G06T1/00
CPC分类号： G01R33/565 , G01R33/56316 , G01R33/56563 , G01R33/5659
摘要： To display the information, as an image, regarding the moving portion of the object without the aid of the doctor, the image is reconstructed on the basis of the observed NMR signal and the image phase information is calculated from the image intensity information derived from the reconstructed image, and the phase information calculated is displayed as the image.
摘要翻译：为了在没有医生帮助的情况下作为图像显示关于物体的移动部分的信息，基于观察到的NMR信号重建图像，并且根据从图像强度信息导出的图像强度信息来计算图像相位信息重建图像，并且计算的相位信息被显示为图像。

10. 发明授权

US5277182A Coronory artery imaging method and apparatus 失效
标题翻译：冠状动脉成像方法及装置
公开(公告)号：US5277182A
公开(公告)日：1994-01-11
申请号：US723692
申请日：1991-06-24
申请人： Hideaki Koizumi , Ryuzaburo Takeda , Hideki Kohno , Tetsuo Yokoyama , Yoshiyuki Miyamoto , Koichi Sano
发明人： Hideaki Koizumi , Ryuzaburo Takeda , Hideki Kohno , Tetsuo Yokoyama , Yoshiyuki Miyamoto , Koichi Sano
IPC分类号： A61B5/055 , G01R33/563
CPC分类号： A61B5/055 , G01R33/563
摘要： A method for imaging the coronary artery of a living body using nuclear magnetic resonance, wherein a patient is located in a static magneic field and the heart cycle of the patient is detected with the heart dilation period of the patient being determined in accordance with the detected heart cycle. Then, the coronary artery of the patient is portrayed on the nuclear magnetic resonance signal generated by applying high-frequency energy to the patient during the determined heart dilation period.
摘要翻译：一种使用核磁共振对活体的冠状动脉成像的方法，其中患者位于静态磁场中，并且根据检测到的患者的心脏扩张周期被确定，患者的心脏周期被检测到心脏周期。然后，在确定的心脏扩张期间，将患者的冠状动脉描绘在通过对患者施加高频能量而产生的核磁共振信号上。

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