公开(公告)号：US20090061074A1

公开(公告)日：2009-03-05

申请号：US12266326

申请日：2008-11-06

申请人： Masahiro Takizawa ,  Takashi Wada

发明人： Masahiro Takizawa ,  Takashi Wada

IPC分类号： C23C16/52

CPC分类号： H01J37/32935

摘要： A method of detecting abnormal operation of a plasma process, includes: (i) detecting a potential Vpp1 between an upper electrode and a lower electrode disposed parallel to each other in a reaction camber at a time T1 after the plasma process begins in the reaction chamber; (ii) detecting a Vpp2 between the upper electrode and the lower electrode at a time T2 after T1; (iii) comparing Vpp1 and Vpp2 to obtain an operation value; and (iv) determining abnormal operation if the operation value is within a predetermined range.

摘要翻译： 一种检测等离子体工艺的异常操作的方法包括：（i）在反应室中等离子体处理开始之后的时间T1，检测在反应曲面中彼此平行设置的上电极和下电极之间的电位Vpp1 ; （ii）在T1之后的时间T2检测上电极和下电极之间的Vpp2; （iii）比较Vpp1和Vpp2以获得操作值; 以及（iv）如果操作值在预定范围内，则确定异常操作。

公开(公告)号：US20080169808A1

公开(公告)日：2008-07-17

申请号：US11721707

申请日：2005-12-22

申请人： Yo Taniguchi ,  Hisaaki Ochi ,  Masahiro Takizawa ,  Tetsuhiko Takahashi

发明人： Yo Taniguchi ,  Hisaaki Ochi ,  Masahiro Takizawa ,  Tetsuhiko Takahashi

IPC分类号： G01R33/565 ,  G01R33/48

CPC分类号： G01R33/56509 ,  G01R33/4824 ,  G01R33/561 ,  G01R33/5614 ,  G01R33/5616

摘要： Provided is a magnetic resonance imaging apparatus capable of highly precisely detecting and compensating body motions within a short processing time during radial scanning. The magnetic resonance imaging apparatus includes a control unit that applies radiofrequency magnetic fields and magnetic field gradients to a subject lying down in a static magnetic field and that detects magnetic resonance signals generated from the subject, and an arithmetic unit that handles the signals. The arithmetic unit performs subject's body motion detection in an image space, uses an image, which is reconstructed using the low-frequency portion of the k-space data of the image, as criterial data, produces templates by moving the criterial data in advance by predetermined magnitudes of rotations and predetermined magnitudes of translations, and uses the produced templates to perform the body motion detection.

摘要翻译： 提供一种磁共振成像装置，其能够在径向扫描期间在短的处理时间内高精度地检测和补偿身体运动。 磁共振成像装置包括：控制单元，其对位于静态磁场中的被摄体进行射频磁场和磁场梯度，并且检测从被检体产生的磁共振信号;以及运算单元，其处理该信号。 算术单元在图像空间中进行被摄体的身体运动检测，使用利用图像的k空间数据的低频部分重构的图像作为标准数据，通过预先移动标准数据来生成模板 预定的旋转角度和预定的平移量，并且使用所产生的模板来执行身体运动检测。

公开(公告)号：US07372269B2

公开(公告)日：2008-05-13

申请号：US10553900

申请日：2004-04-23

申请人： Masahiro Takizawa ,  Tetsuhiko Takahashi ,  Yo Taniguchi

发明人： Masahiro Takizawa ,  Tetsuhiko Takahashi ,  Yo Taniguchi

IPC分类号： G01V3/00

CPC分类号： G01R33/4824 ,  G01R33/5611

摘要： In a magnetic resonance imaging apparatus, an RF pulse is applied to a subject placed in a static magnetic field, a plurality of gradient magnetic fields are applied, and induced nuclear magnetic resonance signal (echo signal) is received by means of a RF receiving coil unit composed of two or more RF receiving coils. A parallel MRI method is applied to echo signals acquired by reducing the echoes per blade of a propeller MRI method so as to remove the artifact to produce a reconstructed image. The reconstructed image is subjected to inverse Fourier transform to return it to the echo signals in a measurement space corresponding to the blade. The echo signals are girded in an arbitrarily predetermined coordinate system for image and combined. Such a processing is conducted for the echo signals of all the blades. A final image is reconstructed using the echo signals after the image creation in the coordinate system for image.

摘要翻译： 在磁共振成像装置中，将RF脉冲施加到放置在静态磁场中的被摄体，施加多个梯度磁场，并且通过RF接收线圈接收感应的核磁共振信号（回波信号） 单元由两个或更多个RF接收线圈组成。 将并行MRI方法应用于通过减小螺旋桨MRI方法的每个叶片的回波而获得的回波信号，以便去除伪影以产生重建图像。 对重构图像进行傅立叶逆变换，将其返回到与叶片对应的测量空间中的回波信号。 回波信号被束缚在用于图像并组合的任意预定的坐标系中。 对所有叶片的回波信号进行这样的处理。 在用于图像的坐标系中的图像创建之后，使用回波信号重建最终图像。

公开(公告)号：US20060232273A1

公开(公告)日：2006-10-19

申请号：US10553900

申请日：2004-04-23

申请人： Masahiro Takizawa ,  Tetsuhiko Takahashi ,  Yo Taniguchi

发明人： Masahiro Takizawa ,  Tetsuhiko Takahashi ,  Yo Taniguchi

IPC分类号： G01V3/00 ,  A61B5/05

CPC分类号： G01R33/4824 ,  G01R33/5611

摘要： High-speed imaging by a propeller MRI method is enabled as a whole thanks to high-speed computation by preventing an aliasing artifact even if the echoes acquired by one blade are decreased and by reducing the imaging time and the computational complexity. In a magnetic resonance imaging apparatus, an RF pulse is applied to a subject placed in a static magnetic field, a plurality of gradient magnetic fields are applied, and induced nuclear magnetic resonance signal (echo signal) is received by means of a multiple RF receiving coil unit composed of two or more RF receiving coils. A parallel MRI method is applied to echo signals acquired by reducing the echoes per blade of a propeller MRI method so as to remove the artifact to produce a reconstructed image. The reconstructed image is subjected to inverse Fourier transform to return it to the echo signals in a measurement space corresponding to the blade. The echo signals are girded in an arbitrarily predetermined coordinate system for image and combined. Such a processing is conducted for the echo signals of all the blades. A final image is reconstructed using the echo signals after the image creation in the coordinate system for image.

摘要翻译： 通过螺旋桨MRI方法的高速成像由于高速计算，即使通过防止由一个叶片获得的回波减少并且通过减少成像时间和计算复杂度来防止混叠伪影，也能够实现。 在磁共振成像装置中，将RF脉冲施加到放置在静态磁场中的被摄体，施加多个梯度磁场，并且通过多个RF接收来接收诱导的核磁共振信号（回波信号） 线圈单元由两个或更多个RF接收线圈组成。 将并行MRI方法应用于通过减小螺旋桨MRI方法的每个叶片的回波而获得的回波信号，以便去除伪影以产生重建图像。 对重构图像进行傅立叶逆变换，将其返回到与叶片对应的测量空间中的回波信号。 回波信号被束缚在用于图像并组合的任意预定的坐标系中。 对所有叶片的回波信号进行这样的处理。 在用于图像的坐标系中的图像创建之后，使用回波信号重建最终图像。

公开(公告)号：US06541970B1

公开(公告)日：2003-04-01

申请号：US09529352

申请日：2000-06-13

申请人： Masahiro Takizawa ,  Tetsuhiko Takahashi

发明人： Masahiro Takizawa ,  Tetsuhiko Takahashi

IPC分类号： G01V300

CPC分类号： G01R33/56554

摘要： In a multi-shot MR imaging method, a navigator echo V(kx, n) of which phase-encoding amount is 0 is generated by applying a gradient magnetic field pulse in a readout direction (x-direction) and collected at each segment. A phase shift map C(kx, n) of V(kx, n) collected in the n-th segment is produced in k-space as a function in kx-direction with V(kx, 1) collected in the first segment being the reference. Next, noises are removed from C(kx, n), and C(kx, n) is smoothed. Then, an image echo signal S(kx, n, m) collected in the n-th segment is corrected in k-space according to a smoothed phase shift map C′(kx, n) of V(kx, n) collected in the same segment, and an image echo signal S′(kx, n, m) of which phase shifts are corrected is thereby acquired. Thus, the phase shifts of the image echo signals caused by a motion in the x-direction of a patient can be precisely corrected at a high speed. By reconstructing an image with the corrected image echo signal S′(kx, n, m), the image without motion artifacts can be acquired in realtime.

摘要翻译： 在多重MR成像方法中，相位编码量为0的导航回波V（kx，n）通过在读出方向（x方向）施加梯度磁场脉冲而产生，并在每个段收集。 在k空间中，在第k个方向上产生V（kx，n）中的V（kx，n）的相移图C（kx，n）作为kx方向的函数，在第一段中收集的V（kx，1）为 参考。 接下来，从C（kx，n）去除噪声，并且平滑C（kx，n）。 然后，根据所收集的V（kx，n）的平滑相移映射C'（kx，n），在k空间中将在第n段中采集的图像回波信号S（kx，n，m） 相同的段和校正了相移的图像回波信号S'（kx，n，m）。 因此，可以高速地精确地校正由患者的x方向上的运动引起的图像回波信号的相移。 通过用校正图像回波信号S'（kx，n，m）重构图像，可以实时获取没有运动伪影的图像。

公开(公告)号：US06499834B2

公开(公告)日：2002-12-31

申请号：US09984097

申请日：2001-10-29

申请人： Masahiro Takizawa

发明人： Masahiro Takizawa

IPC分类号： B41J205

CPC分类号： B41J2/04506 ,  B41J2/04515 ,  B41J2/04518 ,  B41J2/04523 ,  B41J2/04528 ,  B41J2/04541 ,  B41J2/04543 ,  B41J2/04548 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04591

摘要： A printhead mainly includes at least two ink supply holes on a single semiconductor substrate, a first signal processing circuit laid out at least at one corner of the semiconductor substrate to arbitrarily select a heater for heating the ink, and a second signal processing circuit, other than the first signal processing circuit for arbitrarily selecting a heater, that realizes a function without dividing an arrangement. The lengths of signal lines are minimized to realize a printhead free from any malfunction.

摘要翻译： 打印头主要包括在单个半导体衬底上的至少两个供墨孔，至少布置在半导体衬底的一个角上的第一信号处理电路，以任意选择用于加热油墨的加热器，以及第二信号处理电路，其它 比用于任意选择加热器的第一信号处理电路，其实现功能而不分割布置。 信号线的长度被最小化以实现打印头没有任何故障。

公开(公告)号：US06331048B1

公开(公告)日：2001-12-18

申请号：US09376281

申请日：1999-08-18

申请人： Masahiro Takizawa

发明人： Masahiro Takizawa

IPC分类号： B41J205

CPC分类号： B41J2/04506 ,  B41J2/04515 ,  B41J2/04518 ,  B41J2/04523 ,  B41J2/04528 ,  B41J2/04541 ,  B41J2/04543 ,  B41J2/04548 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04591

摘要： A printhead mainly includes at least two ink supply holes on a single semiconductor substrate, a first signal processing circuit laid out at at least one corner of the semiconductor substrate to arbitrarily select a heater for heating the ink, and a second signal processing circuit, other than the first signal processing circuit for arbitrarily selecting a heater, that realizes a function without dividing an arrangement. The lengths of signal lines are minimized to realize a printhead free from any malfunction.

摘要翻译： 打印头主要包括在单个半导体衬底上的至少两个供墨孔，布置在半导体衬底的至少一个拐角处的第一信号处理电路，以任意选择用于加热油墨的加热器，以及第二信号处理电路，其它 比用于任意选择加热器的第一信号处理电路，其实现功能而不分割布置。 信号线的长度被最小化以实现打印头没有任何故障。

公开(公告)号：US6118273A

公开(公告)日：2000-09-12

申请号：US149121

申请日：1998-09-09

申请人： Masahiro Takizawa ,  Tetsuhiko Takahashi

发明人： Masahiro Takizawa ,  Tetsuhiko Takahashi

IPC分类号： G01R33/54 ,  A61B5/055 ,  G01R33/561 ,  G01R33/567 ,  G01V3/00

CPC分类号： G01R33/56554 ,  G01R33/56509

摘要： In a magnetic resonance imaging method in which after irradiating RF pulses of magnetic resonance frequencies into an object to be inspected, a sequence of detecting echo signals sequentially and a step of reconstructing an image by making use of the obtained echo signals are repeated in parallel, and an animating image is obtained by successively renewing a part of the echo signals used for reconstructing the previous image, a navigator echo is generated for every irradiation of the RF pulses and is detected, a navigator echo which serves as a reference for correcting phases of the echo signals used for the image reconstruction is successively renewed for every image, and the phases of the echo signals are corrected based on the renewed navigator echo for every image obtain the same. Thereby, a reference time for correcting object motion by making use of navigator echoes (3021, 3022) is set short and artifacts due to an object motion is reduced with an accuracy corresponding to a high temporal resolution. Thus, an MRI method which permits reduction of artifacts due to object motions while keeping a high temporal resolution for an MRI of animating images is provided.

摘要翻译： 在磁共振成像方法中，在将磁共振频率的RF脉冲照射到待检查对象之后，顺序地检测回波信号的序列，并且并行地重复利用获得的回波信号重建图像的步骤， 并且通过连续地更新用于重构先前图像的回波信号的一部分来获得动画图像，产生针对RF脉冲的每次照射的导航回波，并且检测导航回波，该导航回波用作校正相位 用于图像重构的回波信号对于每个图像被连续地更新，并且基于对于获得相同的每个图像的更新的导航回波校正回波信号的相位。 因此，通过利用导航回波（3021,3022）来校正物体运动的参考时间被设置得很短，并且由于对象运动引起的伪像以对应于高时间分辨率的精度降低。 因此，提供了一种MRI方法，其允许由于对象运动而减少伪像，同时保持用于动画图像的MRI的高时间分辨率。

公开(公告)号：US4452863A

公开(公告)日：1984-06-05

申请号：US388053

申请日：1982-06-14

申请人： Masahiro Takizawa ,  Yoshio Kawakami ,  Noribumi Kajimoto

发明人： Masahiro Takizawa ,  Yoshio Kawakami ,  Noribumi Kajimoto

IPC分类号： C10M105/24 ,  C09D101/18 ,  C09D127/06 ,  C09D175/04 ,  C10M105/34 ,  C10N40/18 ,  G11B5/73 ,  G11B5/735 ,  G11B5/70

CPC分类号： G11B5/735 ,  Y10S428/90 ,  Y10T428/31551 ,  Y10T428/31565 ,  Y10T428/31786

摘要： In a magnetic recording medium having a base, a coating for magnetic recording formed on one side of the base, and a back coating of a nonmagnetic powder dispersed in a binder containing a thermosetting resin and formed on the other side, the back coating contains a fatty acid and/or a fatty ester.

摘要翻译： 在具有基底的磁记录介质中，形成在基底的一侧的磁记录用涂层和分散在含有热固性树脂的粘合剂中的非磁性粉末的背面涂层形成在另一侧上，背涂层含有 脂肪酸和/或脂肪酸酯。

公开(公告)号：US09664765B2

公开(公告)日：2017-05-30

申请号：US14128051

申请日：2012-06-27

申请人： Hikaru Hanada ,  Yoshitaka Sato ,  Kosuke Hirai ,  Kuniharu Oka ,  Masahiro Takizawa ,  Naoya Sakaguchi ,  Hidehisa Akimaru ,  Miyuki Kawamura

发明人： Hikaru Hanada ,  Yoshitaka Sato ,  Kosuke Hirai ,  Kuniharu Oka ,  Masahiro Takizawa ,  Naoya Sakaguchi ,  Hidehisa Akimaru ,  Miyuki Kawamura

IPC分类号： G01V3/00 ,  G01R33/565 ,  A61B5/055

CPC分类号： G01R33/56518 ,  A61B5/055 ,  G01R33/56572

摘要： In order to obtain a highly reliable image with no image distortion or no artifacts, such as ghosting, by compensating for the distortion of an output gradient magnetic field waveform caused by various factors with high accuracy, an input gradient magnetic field waveform and an output gradient magnetic field waveform corresponding to the input gradient magnetic field waveform are calculated, a response function that is a sum of response functions of a plurality of elements affecting the output gradient magnetic field waveform is calculated using the input gradient magnetic field waveform and the output gradient magnetic field waveform, an output gradient magnetic field waveform is calculated from an input gradient magnetic field waveform of a gradient magnetic field pulse set in the imaging sequence using the response function, and various kinds of correction are performed using the calculated value of the calculated output gradient magnetic field waveform.