公开(公告)号：US07586526B2

公开(公告)日：2009-09-08

申请号：US10113516

申请日：2002-03-28

申请人： Shinji Kurokawa ,  Yasuyuki Yamazaki

发明人： Shinji Kurokawa ,  Yasuyuki Yamazaki

IPC分类号： H04N9/64 ,  H04N5/225

CPC分类号： H04N5/2176 ,  H04N5/2351

摘要： In an image sensing apparatus which has an image sensing element having a plurality of pixels which generate charges in correspondence with the amount of incoming light, and a transfer unit which transfers charge signals generated by the plurality of pixels, first reading of said transfer unit and a second reading are performed after the image sensing element is exposed for a predetermined period of time and before the charge signals accumulated on the pixels are transferred to the transfer unit, wherein a transfer speed used in the second reading is different from a transfer speed used in the first reading.

摘要翻译： 在具有对应于入射光量产生电荷的多个像素的图像感测元件的图像感测设备中，以及传送由多个像素产生的电荷信号的传送单元，所述传送单元的首次读取和 在图像感测元件暴露预定时间段之后并且在累积在像素上的电荷信号被传送到传送单元之前执行第二读取，其中在第二读取中使用的传送速度与所使用的传送速度不同 在一读。

公开(公告)号：US09594133B2

公开(公告)日：2017-03-14

申请号：US13818748

申请日：2011-08-18

申请人： Shinji Kurokawa ,  Norihiko Ozawa ,  Takayuki Abe

发明人： Shinji Kurokawa ,  Norihiko Ozawa ,  Takayuki Abe

IPC分类号： G01R33/44 ,  G01R33/34 ,  G01R33/48 ,  G01R33/561

CPC分类号： G01R33/446 ,  G01R33/34 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/4824 ,  G01R33/5617

摘要： In multi-echo multi-contrast imaging, the image quality is improved by suppressing an increase in imaging time. In order to do so, the arrangement order of echo signals that form an echo train and k space filled with each echo signal are determined such that the continuity of the echo arrangement is maintained while sharing an echo signal between contrasts in multi-echo multi-contrast imaging. Echo trains that perform echo sharing are arranged in non-oscillatory centric view ordering (NOCO). In addition, the starting point of echo sharing of one echo train is connected to the same position of another echo train. When some discontinuous regions are present, the discontinuous regions may be corrected using continuous data of regions symmetrical thereto on the k space.

摘要翻译： 在多回波多对比度成像中，通过抑制成像时间的增加来提高图像质量。 为了做到这一点，确定形成回波列的回波信号和填充有每个回波信号的k空间的排列顺序，使得保持回波装置的连续性，同时在多回波多路复用中共享回波信号， 对比成像。 执行回波共享的回波列车以非振荡中心视图排序（NOCO）排列。 另外，一个回波列的回波共享的起始点连接到另一个回波列的相同位置。 当存在一些不连续区域时，可以使用在k空间对称的区域的连续数据来校正不连续区域。

公开(公告)号：US09500732B2

公开(公告)日：2016-11-22

申请号：US13981567

申请日：2012-01-26

申请人： Nobuyuki Yoshizawa ,  Shinji Kurokawa

发明人： Nobuyuki Yoshizawa ,  Shinji Kurokawa

IPC分类号： G01R33/54 ,  G01R33/561 ,  G01R33/563 ,  G01R33/48 ,  G01R33/567

CPC分类号： G01R33/54 ,  G01R33/4822 ,  G01R33/4826 ,  G01R33/543 ,  G01R33/5617 ,  G01R33/5635 ,  G01R33/5673

摘要： In the non-contrast 3D angiography, degradation of image quality caused by change of the cardiac cycle and degradation of image quality depending on the blood flow direction are prevented to provide an MRA image of favorable image quality, which is useful for diagnosis. A pulse sequence of the multi echo type for performing sampling of three-dimensional k-space data in a circular or elliptical shape is employed as the imaging sequence, and gated imaging based on body motion information is performed. Heart rate is monitored during the imaging, delay time DT from a gating signal and data acquisition time AT determined according to the cardiac cycle are calculated, and according to these imaging parameters, sampling trajectory and echo train number of the circular sampling are controlled.

摘要翻译： 在非对比度3D血管造影中，防止由心脏周期的变化引起的图像质量的劣化和根据血液流动方向的图像质量的劣化，以提供有利于诊断的良好图像质量的MRA图像。 采用用于进行圆形或椭圆形三维k空间数据采样的多回波类型的脉冲序列作为成像序列，并且执行基于身体运动信息的门控成像。 在成像期间监测心率，计算来自门控信号的延迟时间DT和根据心动周期确定的数据获取时间AT，并且根据这些成像参数，控制循环采样的采样轨迹和回波序列号。

公开(公告)号：US20140077805A1

公开(公告)日：2014-03-20

申请号：US14116228

申请日：2012-05-23

申请人： Yusuke Hoshino ,  Akiko Kanet ,  Shinji Kurokawa

发明人： Yusuke Hoshino ,  Akiko Kanet ,  Shinji Kurokawa

IPC分类号： G01R33/56

CPC分类号： G01R33/56 ,  G01R33/5617 ,  G01R33/583

摘要： The purpose of the present invention is to obtain an image with a desired contrast while minimizing specific absorption rate and without deteriorating image quality in a variable refocus flip angle sequence. To this end, Teequiv specified by a signal decay pattern SSP obtained by a flip angle changing pattern FAP is compared with a designated Teequiv, and the flip angle changing pattern FAP is changed according to the comparison result to search for the flip angle changing pattern FAP which gives a desired contrast. Then, the flip angle changing pattern FAP which is capable of realizing the designated Teequiv is determined. Then, imaging is performed using each flip angle constitutes the determined flip angle changing pattern FAP.

摘要翻译： 本发明的目的是获得具有期望对比度的图像，同时使比吸收率最小化并且不会使可变重聚焦翻转序列中的图像质量恶化。 为此，将通过翻转角度改变图案FAP获得的信号衰减图案SSP指定的Teequiv与指定的Teequiv进行比较，并且根据比较结果改变翻转角度改变图案FAP，以搜索翻转角度改变图案FAP 这给出了所需的对比度。 然后，确定能够实现指定的Teequiv的翻转角变化模式FAP。 然后，使用每个翻转角构成确定的翻转角改变图案FAP来执行成像。

公开(公告)号：US20130307537A1

公开(公告)日：2013-11-21

申请号：US13981567

申请日：2012-01-26

申请人： Nobuyuki Yoshizawa ,  Shinji Kurokawa

发明人： Nobuyuki Yoshizawa ,  Shinji Kurokawa

IPC分类号： G01R33/54

CPC分类号： G01R33/54 ,  G01R33/4822 ,  G01R33/4826 ,  G01R33/543 ,  G01R33/5617 ,  G01R33/5635 ,  G01R33/5673

摘要： In the non-contrast 3D angiography, degradation of image quality caused by change of the cardiac cycle and degradation of image quality depending on the blood flow direction are prevented to provide an MRA image of favorable image quality, which is useful for diagnosis. A pulse sequence of the multi echo type for performing sampling of three-dimensional k-space data in a circular or elliptical shape is employed as the imaging sequence, and gated imaging based on body motion information is performed. Heart rate is monitored during the imaging, delay time DT from a gating signal and data acquisition time AT determined according to the cardiac cycle are calculated, and according to these imaging parameters, sampling trajectory and echo train number of the circular sampling are controlled.

摘要翻译： 在非对比度3D血管造影中，防止由心脏周期的变化引起的图像质量的劣化和根据血液流动方向的图像质量的劣化，以提供有利于诊断的良好图像质量的MRA图像。 采用用于进行圆形或椭圆形三维k空间数据采样的多回波类型的脉冲序列作为成像序列，并且执行基于身体运动信息的门控成像。 在成像期间监测心率，计算来自门控信号的延迟时间DT和根据心动周期确定的数据获取时间AT，并且根据这些成像参数，控制循环采样的采样轨迹和回波序列号。