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1. 发明申请

US20110009730A1 MRI SYSTEM APPARATUS TO PRODUCE ELECTRIC CURRENT 审中-公开
标题翻译： MRI系统设备生产电流
公开(公告)号：US20110009730A1
公开(公告)日：2011-01-13
申请号：US12744949
申请日：2008-11-27
申请人： Tomi Esa Kalervo Varjo , Ilpo Asko Julius Koskela , Mika Petri Ylihautala
发明人： Tomi Esa Kalervo Varjo , Ilpo Asko Julius Koskela , Mika Petri Ylihautala
IPC分类号： A61B5/055 , G01R33/36
CPC分类号： G01R33/3692 , G01R33/288
摘要： A magnetic resonance imaging system (10) includes a main field magnet (12) which generates a B 0 magnetic field through an examination region (14). One or more electric power generators (30) are disposed in the B 0 magnetic field. Each of the electric power generators includes at least one winding or coil (34) which is rotatably mounted for movement relative to the B0 magnetic field. A mechanical mechanism (60) such as vanes or propellers (62), a turbine (74) in conjunction with a fluid pump (72), or a motor (78) in conjunction with a drive shaft (76) and gear box (74), drive the at least one winding (34) to move in such a manner that it interacts with the B 0 magnetic field to generate an electric current.
摘要翻译：磁共振成像系统（10）包括通过检查区域（14）产生B 0磁场的主磁场磁体（12）。一个或多个发电机（30）设置在B 0磁场中。每个发电机包括至少一个绕相对于B0磁场运动的可旋转地安装的绕组或线圈（34）。诸如叶片或螺旋桨（62）的机械机构（60），与流体泵（72）结合的涡轮机（74）或与驱动轴（76）和齿轮箱（74）结合的马达（78））驱动所述至少一个绕组（34）以使其与所述B 0磁场相互作用以产生电流的方式移动。

2. 发明申请

US20050113043A1 Method and device for digital-to-RF conversion 有权
标题翻译：数字到RF转换的方法和设备
公开(公告)号：US20050113043A1
公开(公告)日：2005-05-26
申请号：US10717986
申请日：2003-11-20
申请人： Petri Eloranta , Pauli Seppinen , Julius Koskela
发明人： Petri Eloranta , Pauli Seppinen , Julius Koskela
IPC分类号： H04B1/04 , H04B1/69 , H04L20060101 , H04L27/36 , H04Q7/20
CPC分类号： H04B1/04 , H03D7/1441 , H04B2001/0491
摘要： A digital to RF-conversion device that combines the D/A conversion function and the upconversion function by a RF-carrier or IF-signal. The device comprises a plurality of parallel unit cells, each of which is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. The differential LO-switch is further connected in series to a current source. Each unit cell is adapted to receive a control voltage indicative of a data signal value.
摘要翻译：数字到RF转换器件，通过RF载波或IF信号组合D / A转换功能和上变频功能。该装置包括多个并行单元单元，每个单元单元是具有与差分LO开关对串联的差分数据开关部分的混频器单元型转换器。差分LO开关还与电流源串联连接。每个单位单元适于接收指示数据信号值的控制电压。

3. 发明申请

US20050047528A1 Direct conversion receiver and receiving method 有权
标题翻译：直接转换接收和接收方式
公开(公告)号：US20050047528A1
公开(公告)日：2005-03-03
申请号：US10693608
申请日：2003-10-27
申请人： Julius Koskela , Jouko Lokio , Hans-Otto Scheck
发明人： Julius Koskela , Jouko Lokio , Hans-Otto Scheck
IPC分类号： H03D3/00 , H04L27/22
CPC分类号： H03D3/007
摘要： A direct conversion receiver includes a receiver for receiving a signal including multiple components at different receiving frequencies belonging to a frequency band. A mixer mixes the signal components into a base band signal comprising I- and Q branches. A converter converts the analog base band signal into a digital signal. The receiver includes a measuring unit for measuring power levels of the signal components in pairs, where one component in the pair belongs to an upper sideband of the frequency band and one component in the pair belongs to a lower sideband of the frequency band. An estimator estimates, when either the upper sideband component or the lower sideband component dominates in power over the component in the pair, a frequency-independent phase imbalance, a frequency-dependent phase imbalance and a gain imbalance, and a compensator compensates the estimated imbalances to at least one of the I- and Q-branch signals.
摘要翻译：直接转换接收机包括用于接收包括属于频带的不同接收频率的多个分量的信号的接收机。混频器将信号分量混合成包括I和Q分支的基带信号。 A转换器将模拟基带信号转换成数字信号。接收机包括用于测量成对的信号分量的功率电平的测量单元，其中该组中的一个分量属于频带的上边带，并且该对中的一个分量属于频带的下边带。估计器估计，当上边带分量或下边带分量在对中的分量上占优势时，频率无关相位不平衡，频率相关相位不平衡和增益不平衡以及补偿器补偿估计的不平衡涉及I和Q分支信号中的至少一个。

4. 发明授权

US09146290B2 RF transmit and/or receive antenna for a hybrid MRI/HIFU system 有权
标题翻译：用于混合MRI / HIFU系统的RF发射和/或接收天线
公开(公告)号：US09146290B2
公开(公告)日：2015-09-29
申请号：US13519186
申请日：2011-01-05
申请人： Mika Petri Ylihautala , Max Oskar Kohler , Annemaria Johanna Halkola , Matti Olavi Lindstrom , Ilpo Asko Julius Koskela , Jere Matti Nousiainen
发明人： Mika Petri Ylihautala , Max Oskar Kohler , Annemaria Johanna Halkola , Matti Olavi Lindstrom , Ilpo Asko Julius Koskela , Jere Matti Nousiainen
IPC分类号： G01V3/00 , G01R33/48 , G01R33/28 , G01R33/34 , G01R33/341
CPC分类号： G01R33/4814 , G01R33/288 , G01R33/34007 , G01R33/341 , G01R33/481
摘要： An RF/MR transmit and/or receive antenna is disclosed for use in a hybrid magnetic resonance imaging (MRI) system (or MR scanner), which comprises an MRI system and another imaging system for example in the form of a high intensity focused ultrasound (HIFU) system. The RF transmit and/or receive antenna (40, 50) is provided with respect to its conductor structure such that it does not disturb or in any other way detrimentally influence the related other (i.e. HIFU) of the two systems, especially if both systems are operated simultaneously and if the RF antenna is positioned in close proximity to an object to be imaged.
摘要翻译：公开了用于混合磁共振成像（MRI）系统（或MR扫描仪）的RF / MR发射和/或接收天线，其包括MRI系统和另一成像系统，例如以高强度聚焦超声（HIFU）系统。 RF发射和/或接收天线（40,50）相对于其导体结构提供，使得其不受干扰或以任何其它方式有害地影响两个系统的相关其他（即，HIFU），特别是如果两个系统同时操作，并且如果RF天线被定位成紧邻待成像对象。

5. 发明授权

US07453934B2 Automatic receiver calibration with noise and fast fourier transform 失效
标题翻译：自动接收机校准与噪声和快速傅立叶变换
公开(公告)号：US07453934B2
公开(公告)日：2008-11-18
申请号：US11169284
申请日：2005-06-27
申请人： Pauli Seppinen , Julius Koskela , Mikael Gustafsson
发明人： Pauli Seppinen , Julius Koskela , Mikael Gustafsson
IPC分类号： H04B17/00
CPC分类号： H04B17/21
摘要： The present invention provides a method for automatic calibration of a signal path in receivers (e.g., radio frequency receivers) using a noise (and not a specific test signal) as a source and a fast Fourier transform (FFT) of the noise for correcting various parameters related to an inphase/quadrature (I/Q) imbalance in a frequency domain. The present invention (method and apparatus) can provide detecting and correcting an I/Q phase error, an I/Q amplitude error, an absolute corner frequency of the analog baseband filter, and a relative corner frequency of the analog baseband filters just by using the noise as a stimuli. This calibration can be used for a factory calibration or it can be used as an on-site calibration for base stations. Mobile devices can calibrate themselves independently of their location. This reduces the requirements for the test equipment in the manufacturing and maintenance stages.
摘要翻译：本发明提供一种使用噪声（而不是特定的测试信号）作为源的接收机（例如，射频接收机）中的信号路径的自动校准和用于校正各种噪声的噪声的快速傅里叶变换（FFT）的方法与频域中的同相/正交（I / Q）不平衡相关的参数。本发明（方法和装置）可以提供检测和校正I / Q相位误差，I / Q振幅误差，模拟基带滤波器的绝对转角频率以及模拟基带滤波器的相对转角频率，只需使用噪音作为刺激。该校准可用于工厂校准，也可用作基站的现场校准。移动设备可以独立于他们的位置进行自我校准。这减少了制造和维护阶段对测试设备的要求。

6. 发明授权

US10058717B2 High intensity focused ultrasound transducer optimization 有权
公开(公告)号：US10058717B2
公开(公告)日：2018-08-28
申请号：US13515519
申请日：2010-12-07
申请人： Emil G. Radulescu , Gosta Jakob Ehnholm , Ramon Q. Erkamp , I. A. Julius Koskela , Shunmugavelu D. Sokka , Erkki T. Vahala , Max Oskar Kohler
发明人： Emil G. Radulescu , Gosta Jakob Ehnholm , Ramon Q. Erkamp , I. A. Julius Koskela , Shunmugavelu D. Sokka , Erkki T. Vahala , Max Oskar Kohler
IPC分类号： A61N7/02 , G06F17/10 , A61B5/055 , A61N7/00 , A61B34/10 , A61B90/00
CPC分类号： A61N7/02 , A61B2034/104 , A61B2034/105 , A61B2090/374 , A61N2007/0065 , A61N2007/0078 , A61N2007/0095
摘要： When planning magnetic resonance (MR) guided high intensity focused ultrasonic (HIFU) therapy, HIFU transducer element parameters are optimized as a function of 3D MR data describing a size, shape, and position of a region of interest (ROI) (146) and any obstructions (144) between the HIFU transducer elements and the ROI (146). Transducer element phases and amplitudes are adjusted to maximize HIFU radiation delivery to the ROI (146) while minimizing delivery to the obstruction (144). Additionally or alternatively, transducer elements are selectively deactivated if the obstruction (144) is positioned between the ROI (146) and a given transducer element.

7. 发明申请

US20130035582A1 HIGH INTENSITY FOCUSED ULTRASOUND TRANSDUCER OPTIMIZATION 有权
标题翻译：高强度聚焦超声波传感器优化
公开(公告)号：US20130035582A1
公开(公告)日：2013-02-07
申请号：US13515519
申请日：2010-12-07
申请人： Emil G. Radulescu , Gosta Jakob Ehnholm , Ramon Q. Erkamp , I. A. Julius Koskela , Shunmugavelu D. Sokka , Erkki T. Vahala , Max Oskar Kohler
发明人： Emil G. Radulescu , Gosta Jakob Ehnholm , Ramon Q. Erkamp , I. A. Julius Koskela , Shunmugavelu D. Sokka , Erkki T. Vahala , Max Oskar Kohler
IPC分类号： A61N7/02 , G06F17/10 , A61B5/055
CPC分类号： A61N7/02 , A61B2034/104 , A61B2034/105 , A61B2090/374 , A61N2007/0065 , A61N2007/0078 , A61N2007/0095
摘要： When planning magnetic resonance (MR) guided high intensity focused ultrasonic (HIFU) therapy, HIFU transducer element parameters are optimized as a function of 3D MR data describing a size, shape, and position of a region of interest (ROI) (146) and any obstructions (144) between the HIFU transducer elements and the ROI (146). Transducer element phases and amplitudes are adjusted to maximize HIFU radiation delivery to the ROI (146) while minimizing delivery to the obstruction (144). Additionally or alternatively, transducer elements are selectively deactivated if the obstruction (144) is positioned between the ROI (146) and a given transducer element.
摘要翻译：当计划磁共振（MR）引导的高强度聚焦超声（HIFU）治疗时，HIFU换能器元件参数被优化为描述感兴趣区域（ROI）（146）的尺寸，形状和位置的3D MR数据的函数，以及 HIFU换能器元件和ROI（146）之间的任何障碍物（144）。调节传感器元件相位和振幅以最大化HIFU辐射传递到ROI（146），同时最小化到障碍物的传递（144）。另外或替代地，如果障碍物（144）位于ROI（146）和给定的换能器元件之间，则换能器元件被选择性地停用。

8. 发明授权

US07310388B2 Direct conversion receiver and receiving method 有权
标题翻译：直接转换接收和接收方式
公开(公告)号：US07310388B2
公开(公告)日：2007-12-18
申请号：US10693608
申请日：2003-10-27
申请人： Julius Koskela , Jouko Lokio , Hans-Otto Scheck
发明人： Julius Koskela , Jouko Lokio , Hans-Otto Scheck
IPC分类号： H03D3/22 , H03D1/04
CPC分类号： H03D3/007
摘要： A direct conversion receiver includes a receiver for receiving a signal including multiple components at different receiving frequencies belonging to a frequency band. A mixer mixes the signal components into a base band signal comprising I- and Q branches. A converter converts the analog base band signal into a digital signal. The receiver includes a measuring unit for measuring power levels of the signal components in pairs, where one component in the pair belongs to an upper sideband of the frequency band and one component in the pair belongs to a lower sideband of the frequency band. An estimator estimates, when either the upper sideband component or the lower sideband component dominates in power over the component in the pair, a frequency-independent phase imbalance, a frequency-dependent phase imbalance and a gain imbalance, and a compensator compensates the estimated imbalances to at least one of the I- and Q-branch signals.
摘要翻译：直接转换接收机包括用于接收包括属于频带的不同接收频率的多个分量的信号的接收机。混频器将信号分量混合成包括I和Q分支的基带信号。 A转换器将模拟基带信号转换成数字信号。接收机包括用于测量成对的信号分量的功率电平的测量单元，其中该组中的一个分量属于频带的上边带，并且该对中的一个分量属于频带的下边带。估计器估计，当上边带分量或下边带分量在对中的分量上占优势时，频率无关相位不平衡，频率相关相位不平衡和增益不平衡以及补偿器补偿估计的不平衡涉及I和Q分支信号中的至少一个。

9. 发明申请

US20060291549A1 Automatic receiver calibration with noise and fast fourier transform 失效
标题翻译：自动接收机校准与噪声和快速傅立叶变换
公开(公告)号：US20060291549A1
公开(公告)日：2006-12-28
申请号：US11169284
申请日：2005-06-27
申请人： Pauli Seppinen , Julius Koskela , Mikael Gustafsson
发明人： Pauli Seppinen , Julius Koskela , Mikael Gustafsson
IPC分类号： H04B17/00
CPC分类号： H04B17/21
摘要： The present invention provides a method for automatic calibration of a signal path in receivers (e.g., radio frequency receivers) using a noise (and not a specific test signal) as a source and a fast Fourier transform (FFT) of the noise for correcting various parameters related to an inphase/quadrature (I/Q) imbalance in a frequency domain. The present invention (method and apparatus) can provide detecting and correcting an I/Q phase error, an I/Q amplitude error, an absolute corner frequency of the analog baseband filter, and a relative corner frequency of the analog baseband filters just by using the noise as a stimuli. This calibration can be used for a factory calibration or it can be used as an on-site calibration for base stations. Mobile devices can calibrate themselves independently of their location. This reduces the requirements for the test equipment in the manufacturing and maintenance stages.
摘要翻译：本发明提供一种使用噪声（而不是特定的测试信号）作为源的接收机（例如，射频接收机）中的信号路径的自动校准和用于校正各种噪声的噪声的快速傅里叶变换（FFT）的方法与频域中的同相/正交（I / Q）不平衡相关的参数。本发明（方法和装置）可以提供检测和校正I / Q相位误差，I / Q振幅误差，模拟基带滤波器的绝对转角频率以及模拟基带滤波器的相对转角频率，只需使用噪音作为刺激。该校准可用于工厂校准，也可用作基站的现场校准。移动设备可以独立于他们的位置进行自我校准。这减少了制造和维护阶段对测试设备的要求。

10. 发明授权

US09420989B2 Apparatus, method and computer program product for calculating the speed of ultrasound in at least two tissue types 有权
标题翻译：用于计算至少两种组织类型的超声速度的装置，方法和计算机程序产品
公开(公告)号：US09420989B2
公开(公告)日：2016-08-23
申请号：US14002270
申请日：2012-02-27
申请人： Charles Mougenot , Gosta Jakob Ehnholm , Iipo Asko Julius Koskela , Max Oskar Köhler
发明人： Charles Mougenot , Gosta Jakob Ehnholm , Iipo Asko Julius Koskela , Max Oskar Köhler
IPC分类号： A61B8/00 , A61B8/08 , A61B5/107 , A61N7/02 , G01H5/00 , A61B5/055 , A61B6/00 , A61N7/00
CPC分类号： A61B8/08 , A61B5/055 , A61B5/1075 , A61B6/50 , A61B6/5247 , A61B8/0825 , A61B8/0858 , A61B8/406 , A61B8/4494 , A61B8/585 , A61B2562/0204 , A61B2562/046 , A61N7/02 , A61N2007/0078 , A61N2007/0095 , G01H5/00 , G06F19/00
摘要： A medical apparatus including an ultrasound transmitter and receiver system for acquiring ultrasound data descriptive of the speed of ultrasound along at least two paths. The medical apparatus further includes a medical imaging system for acquiring medical image data and a memory containing instructions that causes the processor to acquire the medical image data. The instructions further cause the processor to acquire the ultrasound data. The instructions further cause the processor to segment the medical image data into at least two tissue types. The instructions further causes the processor to determine at least two distances corresponding to the at least two paths in the subject. The instructions further cause the processor to calculate the speed of ultrasound in the at least two tissue types.
摘要翻译：一种包括超声波发射器和接收器系统的医疗装置，用于获取描述沿着至少两条路径的超声速度的超声数据。医疗装置还包括用于获取医学图像数据的医学成像系统和包含使处理器获取医学图像数据的指令的存储器。该指令还使得处理器获取超声数据。指令还使处理器将医学图像数据分割成至少两种组织类型。所述指令还使得所述处理器确定与所述对象中的所述至少两条路径相对应的至少两个距离。所述指令还使得所述处理器计算所述至少两种组织类型中的超声波的速度。

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