公开(公告)号：US5453575A

公开(公告)日：1995-09-26

申请号：US234848

申请日：1994-04-28

Applicant: Matthew O'Donnell ,  Michael J. Eberle ,  Douglas N. Stephens ,  Gerald L. Litzza ,  Daniel S. Haviland

Inventor： Matthew O'Donnell ,  Michael J. Eberle ,  Douglas N. Stephens ,  Gerald L. Litzza ,  Daniel S. Haviland

IPC: A61B8/06 ,  A61B8/12 ,  A61B8/14 ,  B06B1/02 ,  B06B1/06 ,  G01S15/89 ,  G10K11/00

CPC classification number: A61B8/06 ,  A61B8/12 ,  A61B8/4483 ,  A61B8/4488 ,  A61B8/4494 ,  B06B1/0633 ,  B06B1/067 ,  B06B1/0674 ,  G01S15/892 ,  G01S15/8979 ,  G01S15/899 ,  G10K11/004 ,  G10K11/008 ,  A61B8/445 ,  B06B2201/76 ,  G01S15/8981 ,  Y10T29/42

Abstract: An apparatus and method are described for imaging blood flow from within a vasculature. An ultrasound catheter probe carrying an ultrasound transducer array is inserted within a blood vessel. The transducer array emits ultrasound excitation signals and receives ultrasound echo waveforms reflected from blood and tissue in a region of the vasculature. A series of the echo waveforms resulting from a series of excitation signals are combined in a manner such that the echo signals from static features in the region, such as tissue and plaque, are significantly attenuated. The combined signal primarily represents the relatively dynamic features in the region (i.e. the blood flow). A blood flow image is constructed from the combined signal. The blood flow image is colorized and combined with an image of the relatively static features in the region. Thereafter, the combined image is displayed on a video display.

Abstract translation: 描述了用于对脉管系统内的血流进行成像的装置和方法。 携带超声波换能器阵列的超声波导管探针插入血管内。 换能器阵列发射超声激发信号并且接收从脉管系统区域中的血液和组织反射的超声回波波形。 由一系列激励信号产生的一系列回波波形以这样的方式组合，使得来自该区域中的静态特征（例如组织和斑块）的回波信号被显着衰减。 组合信号主要表示该区域中相对动态的特征（即，血流）。 血液流动图像由组合信号构成。 血流图像被着色并与该区域中相对静态特征的图像组合。 此后，组合的图像显示在视频显示器上。

公开(公告)号：US5172343A

公开(公告)日：1992-12-15

申请号：US802804

申请日：1991-12-06

Applicant: Matthew O'Donnell

Inventor： Matthew O'Donnell

IPC: A61B8/14 ,  G01N29/30 ,  G01N29/44 ,  G01S7/52 ,  G10K11/34

CPC classification number: G10K11/345 ,  G01N29/0645 ,  G01N29/30 ,  G01S7/52047 ,  G01S7/52049 ,  G01S7/52095

Abstract: A PASS ultrasonic system performs a scan in which phase errors due to aberrations in the sound media are corrected prior to the acquisition of each beam. Phase errors are measured by cross correlating each of a set of reference beams with the desired beam to produce beam forming errors as a function of beam angle. This function is Fourier transformed to produce phase corrections that are employed by the ultrasonic system to offset the phase errors.

公开(公告)号：US5005419A

公开(公告)日：1991-04-09

申请号：US207532

申请日：1988-06-16

Applicant: Matthew O'Donnell ,  Kenneth B. Welles, II ,  Carl R. Crawford ,  Norbert J. Pelc ,  Steven G. Karr

Inventor： Matthew O'Donnell ,  Kenneth B. Welles, II ,  Carl R. Crawford ,  Norbert J. Pelc ,  Steven G. Karr

IPC: A61B8/00 ,  G01N29/06 ,  G01S7/52 ,  G01S7/526 ,  G01S15/89 ,  G06T1/00

CPC classification number: G01S7/52023 ,  G01S15/8915

Abstract: A method and apparatus for improved digital processing of the analog echo signals in a coherent imaging system is described which simplifies the channel circuitry requirements. The analog echo signals detected with a phased array of transducer elements are first compressed in a non-linear manner then expanded non-linearly with analog-to-digital converter means to provide increased instantaneous dynamic range in the overall system. Representative phased array coherent imaging systems having the improved digital processing means are also disclosed.

Abstract translation: 描述了一种用于改进相干成像系统中的模拟回波信号的数字处理的方法和装置，其简化了信道电路要求。 用相控阵的换能器元件检测的模拟回波信号首先以非线性方式压缩，然后以模数转换器装置非线性地扩展，以在整个系统中提供增加的瞬时动态范围。 还公开了具有改进的数字处理装置的代表性相控阵相干成像系统。

公开(公告)号：US4809184A

公开(公告)日：1989-02-28

申请号：US944482

申请日：1986-12-19

Applicant: Matthew O'Donnell ,  Mark G. Magrane

Inventor： Matthew O'Donnell ,  Mark G. Magrane

IPC: A61B8/00 ,  G01N29/04 ,  G01N29/06 ,  G01N29/38 ,  G01S7/52 ,  G01S7/523 ,  G01S15/89 ,  G10K11/34 ,  G01N29/00

CPC classification number: G01S7/52046 ,  G01S15/8918 ,  G10K11/346

Abstract: A method for steering a beam of vibratory energy to a desired angle .theta. with respect to the plane of an array of transducers, uses apparatus which generates a plurality of sampling strobe sequences with each strobe pulse occurring at a time interval T after the preceding strobe pulse, where T satisfies the Nyquist condition. A different one S.sub.j of the strobe signals is assigned to each different transducer channel and the commencement time of the strobe signal in each channel is offset by a time interval which is a first positive integer multiple M.sub.j, selected for each angle .theta., of an offset time interval which is not greater than 1/32nd of the reciprocal of the ultrasonic excitation frequency F.sub.u. Each strobe signal triggers conversion of the present amplitude of the return signal directly to a digital data word; the apparatus then digitally delays each data word in each of the N channels for a delay time interval selected to cause the delayed data words from all N channels, when coherently summed, to represent any change in reflectance in the beam at the desired angle .theta..

Abstract translation: 一种用于将振动能量束相对于换能器阵列的平面转向所需角度θ的方法，使用生成多个采样选通序列的装置，每个选通脉冲在先前的选通脉冲之后以时间间隔T出现 ，其中T满足奈奎斯特条件。 将选通信号的不同的一个Sj分配给每个不同的换能器通道，并且每个通道中的选通信号的开始时间被偏移一个时间间隔，该时间间隔是为每个角度θ选择的偏移量的第一正整数倍Mj 时间间隔不大于超声波激发频率Fu的倒数的1/32。 每个选通信号触发将信号的当前振幅直接转换为数字数据字; 该装置然后数字地延迟每个N个信道中的每个数据字，以延迟时间间隔被选择以使相干相加的来自所有N个信道的延迟的数据字表示在期望角度θ处的光束中的反射率的任何变化。

公开(公告)号：US4441503A

公开(公告)日：1984-04-10

申请号：US340140

申请日：1982-01-18

Applicant: Matthew O'Donnell

Inventor： Matthew O'Donnell

IPC: G01S7/521 ,  G10K11/18 ,  G10K11/30 ,  A61B10/00 ,  H01L41/22

CPC classification number: G10K11/30 ,  G10K11/18

Abstract: The beam characteristics of individual array elements of a linear transducer array are altered by collimation of ultrasonic waves using critical angle effects. A phased array transducer for a medical imaging system with a 90.degree. image sensor has a collimator which is a thin sheet of polyethylene. Acoustic waves whose angle of incidence is greater than the critical angle are totally reflected. Insignificant ultrasonic energy is generated outside of the imaged sector and there is a modest insertion loss over the acceptance region.

Abstract translation: 通过使用临界角效应的超声波的准直来改变线性换能器阵列的各个阵列元件的光束特性。 用于具有90°图像传感器的医学成像系统的相控阵转换器具有作为聚乙烯薄片的准直器。 入射角大于临界角的声波被完全反映出来。 在成像的扇区之外产生无效的超声波能量，并且在接受区域上存在适度的插入损耗。

公开(公告)号：US20130008361A1

公开(公告)日：2013-01-10

申请号：US13365015

申请日：2012-02-02

Applicant: Ramiro Trevino ,  Matthew O'Donnell ,  Brian O'Donnell

Inventor： Ramiro Trevino ,  Matthew O'Donnell ,  Brian O'Donnell

IPC: A01C23/02 ,  F17D3/00 ,  F16K37/00

CPC classification number: A01C23/007 ,  A01B79/005 ,  Y02P60/214 ,  Y10T137/8158 ,  Y10T137/85978

Abstract: A system for fertilizing a large area. The system may include a fluid bar configured to be towed by a tractor. The fluid bar may include a fluid passageway with at least one aperture and a sensor or meter in communication with the aperture. The aperture may be configured to receive a hose or other attachment distributing fluid to the ground. The system may include a tank, a pump, pump controller and a filter. The pump flow rate and the outlet flow rate may be displayed on monitoring equipment located within a cab of the tractor. The pump controller may be used by the farmer to variably adjust the fluid pressure in each aperture and consequently adjust the flow pressure of fertilizer added to the ground.

Abstract translation: 一个大面积施肥系统。 该系统可以包括构造成由拖拉机牵引的流体杆。 流体条可以包括具有至少一个孔的流体通道和与孔连通的传感器或计量器。 孔可以被配置为接收将流体分配到地面的软管或其它附件。 该系统可以包括罐，泵，泵控制器和过滤器。 泵流量和出口流量可以显示在位于拖拉机驾驶室内的监控设备上。 泵控制器可以由农民使用以可变地调节每个孔中的流体压力，并且因此调节添加到地面的肥料的流动压力。

公开(公告)号：US20120118052A1

公开(公告)日：2012-05-17

申请号：US13273095

申请日：2011-10-13

Applicant: Matthew O'Donnell ,  Xiaohu Gao

Inventor： Matthew O'Donnell ,  Xiaohu Gao

IPC: G01N29/02

CPC classification number: G01N29/2418 ,  G01N29/222 ,  G01N2291/02466

Abstract: Method and system for background suppression in magneto-motive photoacoustic imaging of labeled target objects.

Abstract translation: 标记目标物体磁光成像中背景抑制的方法和系统。

公开(公告)号：US08094802B2

公开(公告)日：2012-01-10

申请号：US11831549

申请日：2007-07-31

Applicant: Joaquin Omar Alvarado ,  David Bauer ,  Matthew O'Donnell

Inventor： Joaquin Omar Alvarado ,  David Bauer ,  Matthew O'Donnell

IPC: H04M3/00 ,  H04M5/00

CPC classification number: H04M3/523

Abstract: A contact originator is given a choice to enqueue the contact in multiple contact queues, to serve multiple needs or interests of the originator. If the contact reaches the head of the queue for the primary need while the contact is being serviced from a queue for a secondary need, the contact either remains at the head of the primary-need queue until the servicing at the secondary-need queue is completed, or a resource of the primary-need queue is conferenced in with the contact and the resource of the secondary-need queue so that the resources can serve both needs simultaneously.

Abstract translation: 联系人发起者可以选择将联系人排队在多个联系人队列中，以满足发起者的多种需求或兴趣。 如果联系人在从辅助需求的队列中服务联系人的情况下到达主要需要的队列的头部，则该联系人将保留在主要需要队列的头部，直到辅助需要队列的服务为 或者主要需求队列的资源与辅助需求队列的联系人和资源进行会议，以便资源同时满足两个需求。

公开(公告)号：US07736317B2

公开(公告)日：2010-06-15

申请号：US10243823

申请日：2002-09-13

Applicant: Douglas N. Stephens ,  Matthew O'Donnell

Inventor： Douglas N. Stephens ,  Matthew O'Donnell

IPC: A61B8/12

CPC classification number: B06B1/0633 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4488 ,  Y10T29/42

Abstract: An ultrasound transducer array (408) includes at least one transducer element (412) having a first (604) and second (606) portions separated by an acoustical discontinuity (520). The first portion (604) has the desired length to form a half-wave k31 resonance, while the second portion (606) has a resonant length for an undesired very low frequency out-of-band k31 resonance. The thickness of the transducer element (412) is designed for k33 half-resonance. Given the design, the transducer element (412) can operate and provide for both forward-looking (514) and side looking (512) elevation apertures. A method is also disclosed for using the disclosed ultrasound transducer (412) in ultrasound imaging.

Abstract translation: 超声换能器阵列（408）包括至少一个换能器元件（412），该换能器元件具有由声学不连续性（520）隔开的第一（604）和第二（606）部分。 第一部分（604）具有期望的长度以形成半波k31谐振，而第二部分（606）具有用于不期望的非常低频带外k31谐振的谐振长度。 换能器元件（412）的厚度被设计用于k33半共振。 考虑到设计，换能器元件（412）可以操作并提供前视（514）和侧视（512）仰角孔。 还公开了在超声成像中使用所公开的超声换能器（412）的方法。

公开(公告)号：US07318804B2

公开(公告)日：2008-01-15

申请号：US10731302

申请日：2003-12-09

Applicant: William F. Weitzel ,  Kang Kim ,  Matthew O'Donnell ,  Jonathan M. Rubin ,  Hua Xie ,  Xunchang Chen

Inventor： William F. Weitzel ,  Kang Kim ,  Matthew O'Donnell ,  Jonathan M. Rubin ,  Hua Xie ,  Xunchang Chen

IPC: A61B8/00

CPC classification number: A61B8/485 ,  A61B8/08

Abstract: Methods and systems for measuring mechanical property of a vascular wall and a method and system for determining health of a vascular structure are provided wherein local deformation of a vessel wall resulting from physiologic pressures with altered transmural forces is measured. A non-invasive free-hand ultrasound scanning-procedure was performed to apply external force, comparable to the force generated in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. When the applied pressure matched the internal baseline diastolic pressure, strain and strain rate increased by a factor of 10 over a cardiac cycle. Radial arterial strain was assessed in the vessel wall over the entire deformation procedure using a phase-sensitive, two-dimensional speckle-tracking algorithm. An elastic modulus reconstruction procedure was developed to estimate the non-linear elastic properties of the vascular wall.

Abstract translation: 提供了用于测量血管壁的机械性能的方法和系统以及用于确定血管结构健康的方法和系统，其中测量由具有改变的透壁力的生理压力引起的血管壁的局部变形。 进行非侵入性自由手超声扫描程序以施加外力，与测量受试者血压时产生的力相当，以通过平衡内部动脉基线压力来实现更高的应变。 当施加的压力与内部基线舒张压相匹配时，应变和应变率在心脏周期上增加10倍。 使用相敏二维斑点跟踪算法，在整个变形过程的血管壁中评估径向动脉应变。 开发弹性模量重建程序来估计血管壁的非线性弹性性质。