公开(公告)号：US20070229077A1

公开(公告)日：2007-10-04

申请号：US11515760

申请日：2006-09-06

申请人： Vincenzo Punzo ,  Stefano Pittaluga ,  Stefano Besio ,  Alessandro Trequattrini

发明人： Vincenzo Punzo ,  Stefano Pittaluga ,  Stefano Besio ,  Alessandro Trequattrini

IPC分类号： G01V3/00 ,  H01F7/00

CPC分类号： G01R33/3802 ,  G01R33/3875

摘要： A method for determining construction parameters of magnet structures designed to generate magnetic fields in predetermined volumes of space, comprising the steps of: a) defining a predetermined volume of space in which a static magnetic field is to be generated; b) defining the nominal strength and profile of the magnetic field in said predetermined volume of space; c) mathematically describing the nominal magnetic field on the surface of and/or in said predetermined volume of space by using a polynomial expansion of the magnetic field-describing function, which provides a series of coefficients; d) determining the size, geometry and relative position in space of the means for generating said nominal magnetic field, with respect to the volume of space in and on which the desired, i.e. nominal magnetic field, is defined. According to the invention, the predetermined volume of space is delimited by an ideal ellipsoidal closed surface and the magnetic field is expressed by coefficients of a polynomial ellipsoidal harmonic expansion. The method may be also used as a shimming method in volumes of space ideally delimited by ellipsoidal closed surfaces, to be implemented whether or not the predetermined volume of space defined by the magnet structure is also delimited by an ideal closed surface, with an ellipsoidal or other shape.

摘要翻译： 一种用于确定设计成在预定体积的空间中产生磁场的磁体结构的构造参数的方法，包括以下步骤：a）限定要在其中产生静磁场的预定体积的空间; b）限定所述预定体积的空间中的磁场的标称强度和轮廓; c）通过使用提供一系列系数的磁场描述函数的多项式展开来数学地描述和/或在所述预定体积的空间中的标称磁场; d）确定用于产生所述标称磁场的装置的空间中的尺寸，几何形状和相对位置，相对于限定期望的即标称磁场的空间体积。 根据本发明，预定体积的空间由理想的椭圆形封闭表面限定，并且磁场由多项式椭球谐波膨胀系数表示。 该方法还可以用作理想地由椭圆形封闭表面限定的空间体积中的匀场方法，以实现由磁体结构限定的预定体积的空间是否也被理想的封闭表面限定，具有椭圆形或 其他形状。

公开(公告)号：US20070090839A1

公开(公告)日：2007-04-26

申请号：US11436050

申请日：2006-05-18

申请人： Viti Vittorio

发明人： Viti Vittorio

IPC分类号： G01V3/00

CPC分类号： G01R33/3415

摘要： Method of magnetic resonance imaging comprising the steps of: exciting magnetic resonant (MR) active nuclei in a region of interest; creating magnetic field gradients in a phase-encode direction for spatially encoding the excited MR active nuclei; the number of phase-encode gradients producing a field of view corresponding to the region of interest; receiving radio frequency data from the region of interest using an array of at least two radio frequency receive coils, and producing from the radio frequency data an image by combining the images Si obtained from the radio frequency signals of the single coils Ci of the array by weighting the said images Si of each coil Ci with the sensitivity Bi of the corresponding coil Ci; an estimated sensitivity Bi (Fourier domain) of each coil Ci of the array being used, which is determined by applying a smoothing filter fi to the k-space data si received from each coil Ci. According to the invention the said fi smoothing filter being estimated from the spatial frequencies content of the k-space sensitivity map of each coil, and the filter fi being a k-space filter with a triangular or pyramidal shape, depending on the fact that a single dimensional profile or a two dimensional image is reconstructed, the triangular filter having a width and the pyramidal filter having a base which is double than the maximum spatial frequency of the relative coil field.

摘要翻译： 磁共振成像方法包括以下步骤：激励感兴趣区域中的磁共振（MR）活性核; 在相位编码方向产生磁场梯度，用于空间编码激发的MR活性核; 产生对应于感兴趣区域的视场的相位编码梯度的数量; 使用至少两个射频接收线圈的阵列从所述感兴趣区域接收射频数据，并且从所述射频数据产生图像，通过组合从所述射频信号获得的图像S < 通过对每个线圈C i i i的每个线圈C i i i的所述图像进行加权，使得阵列的单个线圈C i i i i具有灵敏度B < / SUB>相应的线圈C 被使用的阵列的每个线圈C i i i i的估计灵敏度B I（Fourier域），其通过应用平滑滤波器f i i / >到从每个线圈C i i i接收的k空间数据i 。 根据本发明，所述平滑滤波器是根据每个线圈的k空间灵敏度映射的空间频率内容估计的，并且滤波器f k是k 具有三角形或金字塔形状的空间滤波器，这取决于重建单维轮廓或二维图像的事实，具有宽度的三角形滤波器和具有基座的锥形滤波器，该基极比两者的最大空间频率的两倍 相对线圈场。

公开(公告)号：US07116195B2

公开(公告)日：2006-10-03

申请号：US10813263

申请日：2004-03-31

申请人： Viti Vittorio

发明人： Viti Vittorio

IPC分类号： H01F7/00

CPC分类号： G01R33/34053 ,  G01R33/34046 ,  G01R33/34061 ,  G01R33/341

摘要： Receiving coil for nuclear magnetic resonance imaging apparatus for spinal column images, where the apparatus has a supporting bench of the patient and an element for generating a static magnetic field perpendicularly oriented with respect to the supporting bench of the patient. The receiving coil is provided with at least two conductors useful for the detection extending in the direction of the positioning of the longitudinal extension of the spinal column and in the supporting bench or in a bench parallel to the supporting bench of the patient and have a length that is enough to cover approximately the anatomic district of the spinal column or a part of interest thereof, the distance of the two conductors being in the order of magnitude of the average width of the spinal columns and the two conductors being connected in such a way to have a coherent flowing direction of current.

摘要翻译： 用于脊柱图像的核磁共振成像装置的接收线圈，其中该装置具有患者的支撑台，以及用于产生相对于患者的支撑台垂直取向的静磁场的元件。 接收线圈设置有至少两个导体，其用于沿着脊柱的纵向延伸部的定位方向延伸的检测，并且在平行于患者的支撑台的支撑工作台或台架上，具有长度 这足以覆盖大约脊柱的解剖区域或其一部分感兴趣的地方，两个导体的距离在脊柱和两个导体的平均宽度的数量级中以这样的方式连接 具有电流的相干流动方向。

公开(公告)号：US07098660B2

公开(公告)日：2006-08-29

申请号：US10928151

申请日：2004-08-30

申请人： Orfeo Contrada ,  Luigi Satragno

发明人： Orfeo Contrada ,  Luigi Satragno

IPC分类号： G01V3/00

CPC分类号： A61B6/0421 ,  A61B5/0555 ,  A61B5/4528

摘要： A method and apparatus for diagnostic imaging of a body part, by nuclear magnetic resonance, which method includes the steps of positioning the body part in a detection volume of a nuclear magnetic resonance imaging apparatus, inside a dedicated receiving coil; selecting the section or sections of said body part that has to be imaged and carrying out image detection by nuclear magnetic resonance; identifying and storing the detected images; and carrying out at intervals one or more subsequent image detections with nuclear magnetic resonance of the same body part and of the same section thereof as in the preceding image detections with nuclear magnetic resonance, positioning each time the body part in the same relative position with respect to the imaging volume of the nuclear magnetic resonance imaging apparatus.

摘要翻译： 一种用于通过核磁共振对身体部位进行诊断成像的方法和装置，该方法包括以下步骤：在专用接收线圈内部将身体部分定位在核磁共振成像装置的检测体积中; 选择必须成像的所述身体部分的部分或者通过核磁共振进行图像检测; 识别和存储检测到的图像; 并且间隔地执行与核磁共振的先前图像检测相同的身体部分和相同部分的核磁共振的一次或多次随后的图像检测，每次将身体部位定位在相对的相对位置时 到核磁共振成像装置的成像体积。

公开(公告)号：US20060183998A1

公开(公告)日：2006-08-17

申请号：US11308359

申请日：2006-03-18

申请人： Eugenio Biglieri ,  Luigi Satragno

发明人： Eugenio Biglieri ,  Luigi Satragno

IPC分类号： A61B5/05

CPC分类号： G01N24/08 ,  A61B5/0037 ,  A61B5/055 ,  A61B5/4528 ,  G01R33/56308

摘要： A method for determining the condition of an animate or inanimate object by magnetic resonance imaging, MRI, particularly for determining the pathologic condition of rheumatoid arthritis (“arthritis rheumatoides”) and carrying out a patient follow-up.

摘要翻译： 用于通过磁共振成像（MRI）来确定动画或无生命物体的状况的方法，特别是用于确定类风湿性关节炎（“关节炎风湿病”）的病理状况并进行患者随访。

公开(公告)号：US06958577B2

公开(公告)日：2005-10-25

申请号：US10154911

申请日：2002-05-28

申请人： Eugenio Biglieri ,  Osvaldo Pugliese ,  Lorenzo Bessi ,  Luigi Satragno ,  Luciano Schiavini

发明人： Eugenio Biglieri ,  Osvaldo Pugliese ,  Lorenzo Bessi ,  Luigi Satragno ,  Luciano Schiavini

IPC分类号： A61B5/0456 ,  A61B5/055 ,  A61B8/00 ,  G01R33/28 ,  G01V3/00

CPC分类号： G01R33/28 ,  A61B5/0456 ,  A61B5/742 ,  A61B5/7475 ,  A61B8/00 ,  A61B8/5238

摘要： An apparatus for imaging the inner part of a body, particularly for diagnostic imaging thereof, including at least means for imaging and displaying images according to at least one type of beams, waves or signals transmitted toward a body or a part thereof to be examined, the said means being means for generating at least one type of waves or beams which are transmitted toward the body or the part thereof to be internally imaged and means for receiving said type of waves or beams transmitted by the body under examination or by the part thereof or deriving from the excitation of said part or body under examination, from the reflection and/or transmission and/or modification of waves, of the beams transmitted against said body under examination or the part thereof.

摘要翻译： 一种用于对身体的内部部分进行成像，特别是用于其诊断成像的装置，至少包括用于根据要被检查的身体或其一部分传送的至少一种类型的束，波或信号来成像和显示图像的装置， 所述装置是用于产生朝向身体或其部分被传送到内部成像的至少一种类型的波或波束的装置，以及用于接收被检查体或其部分传输的所述类型的波或波束的装置 或者从被检测的所述部件或身体的激发导出的波束的反射和/或透射和/或改变，所述光束被透射抵靠被检查的身体或其部分。

公开(公告)号：US20050046530A1

公开(公告)日：2005-03-03

申请号：US10813263

申请日：2004-03-31

申请人： Viti Vittorio

发明人： Viti Vittorio

IPC分类号： G01R33/34 ,  H01F29/00

CPC分类号： G01R33/34053 ,  G01R33/34046 ,  G01R33/34061 ,  G01R33/341

摘要： Receiving coil for nuclear magnetic resonance imaging apparatus for spinal column images, where the apparatus has a supporting bench of the patient and an element for generating a static magnetic field perpendicularly oriented with respect to the supporting bench of the patient. The receiving coil is provided with at least two conductors useful for the detection extending in the direction of the positioning of the longitudinal extension of the spinal column and in the supporting bench or in a bench parallel to the supporting bench of the patient and have a length that is enough to cover approximately the anatomic district of the spinal column or a part of interest thereof, the distance of the two conductors being in the order of magnitude of the average width of the spinal columns and the two conductors being connected in such a way to have a coherent flowing direction of current.

摘要翻译： 用于脊柱图像的核磁共振成像装置的接收线圈，其中该装置具有患者的支撑台，以及用于产生相对于患者的支撑台垂直取向的静磁场的元件。 接收线圈设置有至少两个导体，其用于沿着脊柱的纵向延伸部的定位方向延伸的检测，并且在平行于患者的支撑台的支撑工作台或台架上，具有长度 这足以覆盖大约脊柱的解剖区域或其一部分感兴趣的地方，两个导体的距离在脊柱的平均宽度的数量级中，并且两个导体以这种方式连接 具有电流的相干流动方向。

公开(公告)号：US20040189301A1

公开(公告)日：2004-09-30

申请号：US10786300

申请日：2004-02-26

申请人： Esaote S.p.A.

发明人： Eugenio Biglieri ,  Osvaldo Pugliese

IPC分类号： G01V003/00 ,  G06K009/00 ,  G06F015/16

CPC分类号： G01R33/28 ,  A61B5/0456 ,  A61B5/742 ,  A61B5/7475 ,  A61B8/00 ,  A61B8/5238

摘要： Nuclear Magnetic Resonance imaging apparatus, comprising a unit (1) for exciting and receiving nuclear spin signals, an electronic driver unit (3) for driving the devices of the signal exciting and receiving unit, an electronic unit for controlling the electronic driver units, a unit (6) for processing the received signals, a unit (5) for displaying the image data processed, a unit (6) for filing and storing the image data, a unit (4) for entering commands, the said units being formed partially by specific hardware and partially by a commercial available personal computer running specific programs, a bidirectional communication bus (7null) being further provided for the communication between the different units, which bus encodes data consistently with the communication buses normally used to interface computer peripheral devices, and/or in communication networks, or the like, characterized in that at least one part of the personal computer hardware is formed by a client computer (30) and part by a server computer (Server PC) communicating one with the other by means of a conventional network (7).

公开(公告)号：US6066098A

公开(公告)日：2000-05-23

申请号：US97166

申请日：1998-06-12

申请人： Leonardo Masotti ,  Elena Biagi ,  Marino Cerofolini ,  Alberto Bertini ,  Marco Calzolai ,  Andrea Bigagli ,  Leonardo Galardi ,  Carlo Giovannucci

发明人： Leonardo Masotti ,  Elena Biagi ,  Marino Cerofolini ,  Alberto Bertini ,  Marco Calzolai ,  Andrea Bigagli ,  Leonardo Galardi ,  Carlo Giovannucci

IPC分类号： G01S7/52 ,  A61B8/00

CPC分类号： G01S7/52039 ,  G01S7/52026 ,  G01S7/52034 ,  G01S7/52038

摘要： A method of analyzing an ultrasonic signal is described. The method is characterized in that the ultrasonic signal (f(t)) is sampled and digitized and in that a discrete wavelet transform is applied to the sampled and digitized signal to obtain a spectral map of the sampled signal

摘要翻译： 对超声信号的分析方法进行说明。 该方法的特征在于对超声信号（f（t））进行采样和数字化，并且将离散小波变换应用于采样和数字化信号以获得采样信号的频谱图

公开(公告)号：US20240302463A1

公开(公告)日：2024-09-12

申请号：US18595893

申请日：2024-03-05

申请人： ESAOTE S.p.A.

发明人： Vincenzo Punzo

IPC分类号： G01R33/341 ,  G01R33/34 ,  G01R33/385 ,  G01R33/56

CPC分类号： G01R33/341 ,  G01R33/34007 ,  G01R33/385 ,  G01R33/5608

摘要： A method for producing planar gradient coils for MRI systems includes defining a planar surface along which one continuous current wire extends along a path for generating a gradient field along a spatial direction; defining the path of the continuous current wire as a spiral path of a single continuous wire filament; describing the spiral path of the continuous current wire by a parametric curve according to a modified version of the Pascal Limançons curve combined with the Archimede's spiral; applying the Biot-Savard law to evaluate the magnetic field generated by the continuous current wire extending along the spiral path; optimizing the parameters of the parametric curve for shaping the spiral path of the continuous current wire to generate a linear magnetic gradient field along the spatial direction and which gradient magnetic field is linear inside a predetermined volume of space permeated by the linear magnetic gradient field.