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1. 发明专利

JP2008302065A X-ray imaging apparatus 有权
标题翻译： X射线成像装置
公开(公告)号：JP2008302065A
公开(公告)日：2008-12-18
申请号：JP2007152783
申请日：2007-06-08
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI , KITAGAWA SHIGERU , HOSOBE TAKASHI , KOBAYASHI MASAKI , YAMASHITA FUMIAKI
IPC分类号： A61B6/03
CPC分类号： A61B6/508
摘要： PROBLEM TO BE SOLVED: To remove foreign radiation components such as cosmic rays included in detection data of X-ray imaging apparatus.
SOLUTION: An X-ray generator 10 irradiates a subject 90 with an X-ray fan beam 12. An X-ray detector 20 has a semiconductor device array 22 consisting of a plurality of semiconductor devices for detecting the fan beam 12. A cosmic ray component removing part 30 removes muon components included in the projection data of the fan beam 12. Specifically, the cosmic ray component removing part 30 determines whether muon components are included or not in a plurality of projection data by comparing the plurality of projection data detected at different hours, and removes the muon components. An image forming part 40 forms X-ray image data by executing the reconstruction arithmetic operation based on the projection data from which the muon components are removed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：去除包括在X射线成像设备的检测数据中的宇宙射线等外来的辐射成分。解决方案：X射线发生器10用X射线扇形光束12照射被检体90.X射线检测器20具有由用于检测扇形光束12的多个半导体器件组成的半导体器件阵列22。宇宙射线成分去除部30除去风扇光束12的投影数据中包含的μ子成分。具体地，宇宙射线成分去除部30通过比较多个投影来判定多个投影数据中是否包含muon成分在不同时间检测数据，并删除muon组件。图像形成部分40通过基于去除了μ子分量的投影数据执行重建算术运算来形成X射线图像数据。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008302067A X-ray imaging apparatus 审中-公开
标题翻译： X射线成像装置
公开(公告)号：JP2008302067A
公开(公告)日：2008-12-18
申请号：JP2007152790
申请日：2007-06-08
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI , KITAGAWA SHIGERU , HOSOBE TAKASHI , KOBAYASHI MASAKI , YAMASHITA FUMIAKI
IPC分类号： A61B6/03
CPC分类号： A61B6/508
摘要： PROBLEM TO BE SOLVED: To reduce the influence of cosmic rays, etc. in the calibration of an X-ray imaging apparatus.
SOLUTION: Projection data D
1 -D
k are collected for each channel in reference time, and the average value AV
R and the standard deviation SD
R on the projection data D
1 -D
k for all the channels are calculated. Then, the projection data, obtained one after another for the respective channels as the data for calibration, are compared with the average value AV
R for example. If the difference of the projection data from the average value AV
R exceeds tolerance, it is determined that the projection data are affected by muons, and the affected projection data are removed from the data for calibration. In this way, the calibration is hardly affected by muons, etc, so that the calibration can be more accurately performed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了减少在X射线成像设备的校准中的宇宙射线等的影响。
解决方案：在参考时间内为每个通道收集投影数据D 1 -D k ，平均值AV R 计算所有通道的投影数据D -D k 上的标准偏差SD R 。然后，将用于各个通道的各个通道相继获得的用于校准的数据的投影数据与例如平均值AV R 进行比较。如果投影数据与平均值AV R 的差超过公差，则确定投影数据受μ子影响，并从数据中删除受影响的投影数据进行校准。这样，校准几乎不受μ子等影响，从而可以更准确地进行校准。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008302066A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2008302066A
公开(公告)日：2008-12-18
申请号：JP2007152787
申请日：2007-06-08
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI , KITAGAWA SHIGERU , HOSOBE TAKASHI , KOBAYASHI MASAKI , YAMASHITA FUMIAKI
IPC分类号： A61B6/03
CPC分类号： A61B6/508
摘要： PROBLEM TO BE SOLVED: To reduce the influence of cosmic rays, etc. in the calibration of an X-ray CT apparatus.
SOLUTION: In the calibration performed by actual irradiation/detection with a fan beam 12, an X-ray generator 10 and an X-ray detector 20 are disposed in the horizontal direction (in the x-axis direction). Specifically, the X-ray generator 10 and the X-ray detector 20 are moved as a rotary base 72 is rotated by a rotating mechanism 70, and the normal of the detection face of the semiconductor device array 22 is turned approximately in the horizontal direction. As the possibility of muons coming approximately in the vertical direction (in the z-axis direction) is high, the possibility of muons flying into the detection face can be reduced by turning the normal of the detection face of the semiconductor device array 22 approximately in the horizontal direction. As a result, the calibration including the detection of X rays is hardly affected by muons, etc., and therefore, the calibration can be more accurately performed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了减少在X射线CT装置的校准中的宇宙射线等的影响。解决方案：在通过风扇光束12的实际照射/检测进行的校准中，在水平方向（x轴方向）上设置X射线发生器10和X射线检测器20。具体地说，当旋转基座72被旋转机构70旋转时，X射线发生器10和X射线检测器20移动，半导体器件阵列22的检测面的法线大致在水平方向转动。由于μ子大致在垂直方向（在z轴方向上）的可能性很高，所以可以通过将半导体器件阵列22的检测面的法线近似地转过来来减小μons进入检测面的可能性水平方向。结果，包括X射线检测的校准几乎不受μ子等的影响，因此可以更精确地进行校准。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2007050096A Bone evaluating apparatus 有权
标题翻译：骨骼评估装置
公开(公告)号：JP2007050096A
公开(公告)日：2007-03-01
申请号：JP2005237193
申请日：2005-08-18
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI
IPC分类号： A61B8/08
摘要： PROBLEM TO BE SOLVED: To provide a bone evaluating apparatus which evaluates the inner structure of the bone with a simple configuration. SOLUTION: The bone 30 is scanned by an ultrasonic beam 50 to acquire a distribution of property values 52. The property values are, for example, an attenuation value of an ultrasonic wave. The distribution of property values 52 reflects the distribution of bone beams in the bone 30 and generally has an M shape. By analyzing the shape of the distribution, the distribution of the bone beams within the bone 30 is estimated and the mechanical structure of the bone is evaluated. In the method, X rays can substitute for ultrasonic waves. Normalization operation using the bone thickness can also be applied to the method. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种骨骼评价装置，其以简单的构造评价骨骼的内部结构。解决方案：骨30被超声波束50扫描以获得特性值52的分布。特性值例如是超声波的衰减值。属性值52的分布反映了骨30中的骨束的分布，并且通常具有M形。通过分析分布的形状，估计骨30内的骨束的分布，并评估骨的机械结构。在该方法中，X射线可代替超声波。使用骨厚度的归一化操作也可以应用于该方法。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2008302068A X-ray imaging apparatus 审中-公开
标题翻译： X射线成像装置
公开(公告)号：JP2008302068A
公开(公告)日：2008-12-18
申请号：JP2007152792
申请日：2007-06-08
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI , KITAGAWA SHIGERU , HOSOBE TAKASHI , KOBAYASHI MASAKI , YAMASHITA FUMIAKI
IPC分类号： A61B6/03
CPC分类号： A61B6/508
摘要： PROBLEM TO BE SOLVED: To appropriately extract an unstable device in X-ray imaging apparatus with relatively high detection sensitivity.
SOLUTION: The average value and the standard deviation are calculated based on projection data obtained when X rays are radiated from an X-ray generator. For example, the average value AV
n and the standard deviation SD
n when X rays are radiated are calculated for a channel ch
n . Next, the standard deviation is calculated based on the projection data obtained when X rays are not radiated from the X-ray generator. For example, the standard deviation SD
n when X rays are not radiated is calculated for the channel ch
n . Then, whether a semiconductor device is unstable or not is determined based on the average value and the standard deviation when the X rays are radiated and the standard deviation when X rays are not radiated, calculated for each semiconductor device. For example, whether the semiconductor device is unstable or not is determined by comparing the data with predetermined reference data.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了适当地提取具有较高检测灵敏度的X射线成像装置中的不稳定装置。
解决方案：根据从X射线发生器发射X射线时获得的投影数据计算平均值和标准偏差。例如，对于通道ch n 计算X射线照射时的平均值AV n 和标准偏差SD n 。接下来，基于当X射线不从X射线发生器发射时获得的投影数据来计算标准偏差。例如，针对信道ch n 计算X射线未被辐射时的标准偏差SD n 。然后，基于对于每个半导体器件计算X射线时的平均值和标准偏差以及不辐射X射线时的标准偏差，确定半导体器件是否不稳定。例如，通过将数据与预定的参考数据进行比较来确定半导体器件是否不稳定。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2004215857A Ultrasonic bone assessment device 有权
公开(公告)号：JP2004215857A
公开(公告)日：2004-08-05
申请号：JP2003006446
申请日：2003-01-14
申请人： Aloka Co Ltd , アロカ株式会社
发明人： HAMATSU NATSURU , OTOMO NAOKI , SUDA MASAHIKO
IPC分类号： A61B8/08
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic bone assessment device which enables an operator to acknowledge the proper attachment to a measuring part of a subject easily and certainly and to start a measuring operation quickly. SOLUTION: The ultrasonic bone assessment device 1 has a main body 2 of the device equipped with a foot placement part, a measuring part 4, an operational part 5, a moving means 6 for moving a transducer unit 23. The moving means 6 has a power transmitting mechanism 7 for transmitting the power from a handle 25 of the operational part 5 to the transducer unit 23. A shaft 95 of the power transmitting mechanism 7 is penetrated in a hollow part of a grip 26 of the main body 2. A display means 71 for showing a state of transmitting the power to the transducer unit (a movable part) 23 from the operational part 5 by the power transmitting mechanism 7 comprises a striped display 711 arranged on the peripheral part of the shaft 95 and a window part 712 formed at a position corresponding to the display 711 of the grip 26. Whether the shaft 95 rotates or not is confirmed by recognizing the display 711 visually from the window part 712. COPYRIGHT: (C)2004,JPO&NCIPI

7. 发明专利

JP2007125074A Bone fracture risk evaluation system 有权
$Bone fracture risk evaluation system$
标题翻译：骨折风险评估系统
公开(公告)号：JP2007125074A
公开(公告)日：2007-05-24
申请号：JP2005317975
申请日：2005-11-01
申请人： Aloka Co Ltd , アロカ株式会社
发明人： OTOMO NAOKI
IPC分类号： A61B8/08 , A61B5/11
摘要： PROBLEM TO BE SOLVED: To comprehensively assess the risk of bone fractures.
SOLUTION: In a motion measurement unit 12, the motion of a centroid position is measured for a subject on a step. In a bone measurement unit 14, the property of the bone is measured by using ultrasonic waves or the like. A motion capability evaluation part 30 obtains a motion capability evaluation value E1 indicating the degree of unsteadiness or the probability of the bone fracture for the subject, and a bone evaluation part 32 obtains a bone evaluation value E2 indicating the property of the bone. A general evaluation part 34 obtains a general evaluation value E by weighting addition processing or the like to the evaluation values E1 and E2. When computing the respective evaluation values E1 and E2, an average value and a standard deviation registered in a data base are referred to.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：全面评估骨折的风险。
解决方案：在运动测量单元12中，针对步骤上的对象测量质心位置的运动。在骨测量单元14中，通过使用超声波等来测量骨的性质。运动能力评价部30获得表示被检体的骨折的不稳定性或概率的运动能力评价值E1，骨评价部32取得表示骨的属性的骨评价值E2。一般评价部34通过对评价值E1和E2加权加法处理等而获得一般评价值E. 当计算相应的评估值E1和E2时，参考在数据库中登记的平均值和标准偏差。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2002017727A VITAL TISSUE EVALUATION DEVICE 失效
公开(公告)号：JP2002017727A
公开(公告)日：2002-01-22
申请号：JP2000202399
申请日：2000-07-04
申请人： ALOKA CO LTD
发明人： OTOMO NAOKI
IPC分类号： A61B8/08
摘要： PROBLEM TO BE SOLVED: To make the abutting pressure of a contact part on a subject always constant in a tissue evaluation device such as a bone evaluation device. SOLUTION: A vibrator unit 14 is driven forward utilizing the falling motion of a weight 86. The constant abutting pressure of the vibrator unit 14 on an organism can thereby be obtained in accordance with the weight of the weight 86. In this state, bone evaluation is executed by ultrasonic transmit-receive waves. After the completion of measurement, the vibrator unit 14 is moved backward by the action of a motor 48. At the same time, the weight 86 is pulled upward.

9. 发明专利

JPH1189833A ULTRASONIC BONE MEASURING INSTRUMENT 失效
公开(公告)号：JPH1189833A
公开(公告)日：1999-04-06
申请号：JP25046897
申请日：1997-09-16
申请人： ALOKA CO LTD , UEHA SADAYUKI
发明人： UEHA SADAYUKI , OTOMO NAOKI
IPC分类号： A61B8/00
摘要： PROBLEM TO BE SOLVED: To easily and precisely judge the trabeculae direction of bone by wave-sending ultrasonic waves at each rotation angle while relatively rotating a living body within a surface crossing with the wave sending direction of ultrasonic waves, wave-receiving ultrasonic waves scattered by bones within the living body and frequency-analyzing a received signal. SOLUTION: The living body (e.g. heel) 14 is mounted on a mounting table and transmission oscillator 10 and a receiving oscillator 12 are respectively arranged on both sides of this mounting table 1. At this time, the oscillator 10 is positioned so as to wave-send ultrasonic nearly vertically to a calcaneous surface and the oscillator 12 is arranged so as to vary a receiving angle, namely a detected scattered angle by a detected scattered angle varying mechanism 22. In addition, a device is constituted so as to vary the rotation angle of the living body 14 by a rotary angle varying mechanism 20. Then the received signal outputted from the oscillator 12 is received by a receiver 18, the received signal is analyzed by a frequency analyzer 24 and the trabeculae direction of the bone is judged by a direction judging part 30 from plural frequency analyzing results.

10. 发明专利

JPH10137239A ULTRASONIC BONE EVALUATING DEVICE 失效
公开(公告)号：JPH10137239A
公开(公告)日：1998-05-26
申请号：JP29688396
申请日：1996-11-08
申请人： ALOKA CO LTD
发明人： HAMATSU NATSURU , OTOMO NAOKI
IPC分类号： A61B8/00 , A61B8/08
摘要： PROBLEM TO BE SOLVED: To exactly find the crushing amount of a matching body when a vibrator unit is bonded to a subject with a prescribed pressure, in a bone evaluating device for transmitting and receiving ultrasonic waves while holding the subject between a pair of vibrator units. SOLUTION: A reference body 102 having known thickness D is inserted between a pair of vibrator units 10 and 12 and by reducing a distance between the units, that reference body 102 is sandwiched with a prescribed pressure. In this case, the inter-unit distance is measured by a laser displacement gage 34 and by subtracting D from that measured result, the crushing amount of matching bodies 22a and 22b (thickness in crushing state) is operated. After measurement is performed while holding the subject between a pair of vibrator units 10 and 12, while utilizing the measured result and the crushing amount, sonic velocity in the subject is operated.

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