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1. 发明授权

US4717881A Radio frequency coils for nuclear magnetic resonance imaging systems 失效
标题翻译：射频线圈用于核磁共振成像系统
公开(公告)号：US4717881A
公开(公告)日：1988-01-05
申请号：US798669
申请日：1985-11-15
申请人： David C. Flugan
发明人： David C. Flugan
IPC分类号： G01R33/34 , G01R33/36 , G01R33/20
CPC分类号： G01R33/3657 , G01R33/34069 , G01R33/3628 , G01R33/3671
摘要： Radio frequency apparatus for a magnetic resonance system is provided which includes an r.f. coil and DC controlled circuitry for selectively altering the characteristics of the coil. A loading coil is provided which is selectively activated to de-Q the coil during r.f. transmission so as to minimize the loading effects of the subject and their effect on coil impedance. A switched network is provided which selectively destroys the normal resonant condition of the coil when a second r.f. coil is operative to minimize interaction between the two coils.
摘要翻译：提供了一种用于磁共振系统的射频装置，其包括一个r.f. 线圈和直流控制电路，用于选择性地改变线圈的特性。提供一个加载线圈，其被选择性地激活以在r.f期间使线圈去Q。传输，以最小化被摄体的负载效应及其对线圈阻抗的影响。提供了一种交换网络，其选择性地破坏线圈的正常谐振状态，当第二r.f. 线圈可操作以最小化两个线圈之间的相互作用。

2. 发明授权

US4695800A Non harmonic NMR spin echo imaging 失效
标题翻译：非谐波自旋回波成像
公开(公告)号：US4695800A
公开(公告)日：1987-09-22
申请号：US742161
申请日：1985-06-06
申请人： David M. Kramer , Russell A. Compton , Lawrence M. Strenk , James B. Murdoch
发明人： David M. Kramer , Russell A. Compton , Lawrence M. Strenk , James B. Murdoch
IPC分类号： G01R33/44 , A61B5/055 , A61B10/00 , G01R33/48 , G01R33/54 , G01R33/565 , H04N5/30 , G01R33/20
CPC分类号： G01R33/482 , G01R33/56554
摘要： A technique for producing multiple spin echo signals following an initial excitation pulse is provided. A first inverting pulse is applied a given time interval following the initial excitation pulse, resulting in the formation of the usual first spin echo signal after passage of the given time interval. At a later point in time, a second inverting pulse is applied. The time interval between the initial excitation pulse and this second inverting pulse is not required to be harmonically related to the first given time interval. This results in the production of at least a second, later occurring spin echo signal which does not contain harmonically-related artifact components of the earlier pulses and spin echo signals.
摘要翻译：提供了一种在初始激励脉冲之后产生多个自旋回波信号的技术。在初始激励脉冲之后的给定时间间隔施加第一反相脉冲，导致在给定时间间隔之后形成通常的第一自旋回波信号。在稍后的时间点，施加第二反相脉冲。初始激励脉冲与第二反相脉冲之间的时间间隔不需要与第一给定时间间隔谐波相关。这导致产生不包含较早脉冲和自旋回波信号的谐波相关伪像分量的至少第二个稍后发生的自旋回波信号。

3. 外观设计

USD290874S Operator console for computerized tomography scanner system 失效
公开(公告)号：USD290874S
公开(公告)日：1987-07-14
申请号：US636540
申请日：1984-08-01
申请人： Kenneth E. Wagner
设计人： Kenneth E. Wagner

4. 发明授权

US4616182A Nuclear magnetic resonance signal artifact removal 失效
标题翻译：核磁共振信号伪影去除
公开(公告)号：US4616182A
公开(公告)日：1986-10-07
申请号：US550522
申请日：1983-11-09
申请人： David M. Kramer , Hong-Ning Yeung
发明人： David M. Kramer , Hong-Ning Yeung
IPC分类号： G01R33/565 , G01R33/20
CPC分类号： G01R33/565
摘要： In an NMR imaging system, two-pulse excitation sequences are used to acquire lines of NMR signal information. Artifact signal components may also be present during the times of NMR signal acquisition. In order to remove these artifacts from the center of the image, the artifact signals are alternately phase-encoded from line to line by alternating the phase of one of said excitation pulses from line to line. Fourier transformation is performed on the lines of information in at least the direction of alternate phasing of the artifact components, which relocates the artifacts to the edge of the resulting image.
摘要翻译：在NMR成像系统中，使用双脉冲激励序列来获取核磁共振信号信息。在NMR信号采集期间，人造物信号分量也可能存在。为了从图像的中心去除这些伪像，通过将一个所述激励脉冲的相位从一行到另一行交替地将伪像信号从一行到另一个交替地相位编码。至少在伪像分量的交替定相的方向上对信息线执行傅立叶变换，其将伪像重新定位到所得图像的边缘。

5. 发明授权

US4431006A Passive ultrasound needle probe locator 失效
标题翻译：被动超声针探针定位器
公开(公告)号：US4431006A
公开(公告)日：1984-02-14
申请号：US337899
申请日：1982-01-07
申请人： William S. Trimmer , Bayard Gardineer, Jr. , Andreas Hadjicostis
发明人： William S. Trimmer , Bayard Gardineer, Jr. , Andreas Hadjicostis
IPC分类号： A61B1/00 , A61B10/00 , A61B10/02 , A61B17/32 , A61B17/34
CPC分类号： A61B10/0233 , A61B1/00142 , A61B17/34 , A61B8/0841 , A61B2017/320088 , A61B2017/3413
摘要： A solid steel stylet is carried coaxially within a hollow biopsy needle. The stylet carries a matching layer at its tip, such that when the needle and stylet are inserted into the body, ultrasound energy impinging on the needle tip is converted to pressure waves which are conveyed back up the stylet. An ultrasound transducer located outside the body is coupled to receive sonic energy from the stylet, and to convert it to electrical energy for coordination with, and superposition upon the image of the system.
摘要翻译：固体钢探针同轴地在中空活检针内携带。探针在其尖端处携带匹配层，使得当针和探针插入身体时，撞击针尖的超声波能量被转换成在探针上传送的压力波。位于身体外部的超声换能器被耦合以从探针接收声能，并将其转换成电能以与系统的图像协调和叠加。

6. 发明授权

US4430898A Pulse-echo ultrasound system utilizing conjugate emitting and receiving apertures 失效
标题翻译：脉冲回波超声系统利用共轭发射和接收孔径
公开(公告)号：US4430898A
公开(公告)日：1984-02-14
申请号：US335919
申请日：1981-12-30
申请人： William S. Trimmer , David H. R. Vilkomerson
发明人： William S. Trimmer , David H. R. Vilkomerson
IPC分类号： B06B1/06 , G01N29/04
CPC分类号： B06B1/0648
摘要： A novel method for imaging body tissues is disclosed wherein an ultrasonic pulse having a radially asymmetric side-lobe pattern surrounding a central focal lobe is generated. A receiver for receiving echoes of this pulse is provided which exhibits a sensitivity to echoes from the aforementioned side-lobe pattern which is relatively decreased by comparison to its sensitivity to echoes from the central focal lobe. In the preferred embodiment, square transducers which are rotated with respect to the focal axis by about 45.degree. are used to practice the disclosed method.
摘要翻译：公开了一种用于成像身体组织的新颖方法，其中产生具有围绕中心焦点的径向不对称的旁瓣图案的超声波脉冲。提供了用于接收该脉冲的回波的接收器，其对来自上述旁瓣图案的回波具有灵敏度，该偏振图案相对于其对来自中心焦点的回波的灵敏度相对减小。在优选实施例中，使用相对于焦点轴旋转约45°的方形换能器来实施所公开的方法。

7. 发明授权

US4412249A Ultrasonic image storage device and method 失效
标题翻译：超声波图像存储装置及方法
公开(公告)号：US4412249A
公开(公告)日：1983-10-25
申请号：US338731
申请日：1982-01-11
申请人： Ralph H. Carmen
发明人： Ralph H. Carmen
IPC分类号： G01S7/52 , G06F17/40 , G06T5/40 , H04N7/18
CPC分类号： G01S7/52057 , G01S7/52028
摘要： An improved ultrasonic imaging system and method are provided for medical diagnostic purposes. In order to store additional digital ultrasonic imaging information in a limited memory, a first digital signal representative of the ultrasonic image is provided. The first digital signal is companded to form a second digital signal, the second digital signal being stored. The companding provides a second digital signal which is a non-linear function of the first digital signal such that the granularity of the stored signal is increased in regions of high diagnostic interest at the expense of decreased resolution in areas of low diagnostic interest. When it is desired to display the stored digital image, the second digital signal is retrieved from the storage means and decompanded to provide the reconstituted first digital signal which is thereafter directed to a video display.
摘要翻译：提供改进的超声成像系统和方法用于医学诊断目的。为了在有限的存储器中存储附加的数字超声成像信息，提供了表示超声波图像的第一数字信号。第一数字信号被压缩以形成第二数字信号，存储第二数字信号。扩展提供了第二数字信号，其是第一数字信号的非线性函数，使得在高诊断感兴趣的区域中存储信号的粒度以降低诊断兴趣的区域中的分辨率降低为代价增加。当希望显示所存储的数字图像时，从存储装置检索第二数字信号并进行解压缩，以便提供重构的第一数字信号，其后被定向到视频显示。

8. 发明授权

US4409484A Brake assembly for rotatable scintillation detector 失效
标题翻译：用于旋转闪烁检测器的制动组件
公开(公告)号：US4409484A
公开(公告)日：1983-10-11
申请号：US306573
申请日：1981-09-28
申请人： Carlos D. Pinkstaff
发明人： Carlos D. Pinkstaff
IPC分类号： G01T1/164 , G01T1/166
CPC分类号： G01T1/1648
摘要： A brake mechanism for decelerating and positively stopping the support apparatus of a rotating scintillation detector subsequent to completion of a full 360.degree. of rotation as needed for a tomographic study. There is provided a laterally deflectable striker member positioned between two shock absorbers. The support structure of the scintillation detector is either manually rotated or is motor driven by a gear which is provided with a laterally extending striker pin configured and arranged to rotate with said gear and deflect the striker member in a lateral direction as the gear is completing its rotation in either the clockwise or counterclockwise direction. Once the striker pin engages the striker, the striker is deflected either to the right or to the left depending on whether the gear is rotating in a clockwise or counterclockwise direction. In either direction, the striker contacts one of the shock absorbers which serves to decelerate the rotating mass and safely slow it down.There is also provided a pair of limit switches either of which when actuated will decouple the motor from the gear to bring the rotating apparatus to a complete halt. Actuation of a limit switch is accomplished whenever the detector is motor driven and the striker is advanced to within a preselected position relative to one of the shock absorbers.
摘要翻译：一种用于在完成360度旋转完成360°旋转后旋转闪烁检测器的支撑装置进行断层扫描研究所需的制动机构。设置有位于两个减震器之间的横向偏转撞击件。闪烁检测器的支撑结构可以手动旋转，或者由齿轮驱动，该齿轮设置有横向延伸的撞针，其构造和布置成与所述齿轮一起旋转，并且当齿轮完成其时，沿横向方向偏转撞击构件以顺时针或逆时针方向旋转。一旦撞针接合撞针，撞针就会根据齿轮是沿顺时针还是逆时针方向旋转而向右或向右偏转。在任一方向上，撞击器接触减震器中的一个，其用于使旋转的质量减速并且将其安全地减慢。还提供了一对限位开关，其中当启动时将马达与齿轮分离，使旋转装置完全停止。每当检测器被电动机驱动并且撞击器相对于其中一个减震器前进到预选位置时，执行限位开关的致动。

9. 发明授权

US4401882A Plumbing fitting 失效
标题翻译：水暖配件
公开(公告)号：US4401882A
公开(公告)日：1983-08-30
申请号：US296091
申请日：1981-08-26
申请人： Bayard G. Gardineer , James A. Heringes
发明人： Bayard G. Gardineer , James A. Heringes
IPC分类号： A61B8/08 , F24H1/10 , F24H9/18 , F24H9/12 , H05B3/06
CPC分类号： F24H9/1818 , A61B8/0825 , F24H1/102
摘要： An annular fitting for connecting an immersion heater into a circulating fluid system which includes a groove cut across the threads on the inside of the fitting and a hole through the fitting wall in fluid communication with the groove. The groove and the hole permit a small quantity of fluid to bleed past the base of the heater to reduce the build up of bubbles around the base of the heater.
摘要翻译：一种用于将浸入式加热器连接到循环流体系统中的环形配件，该循环流体系统包括跨过配件内侧的螺纹切割的槽和通过与凹槽流体连通的配合壁的孔。凹槽和孔允许少量的流体流过加热器的底部，以减少加热器底部周围的气泡的积聚。

10. 发明授权

US4401124A Reflection enhancement of a biopsy needle 失效
标题翻译：活检针反射增强
公开(公告)号：US4401124A
公开(公告)日：1983-08-30
申请号：US292470
申请日：1981-08-13
申请人： Joe F. Guess , Dennis R. Dietz , Charles F. Hottinger
发明人： Joe F. Guess , Dennis R. Dietz , Charles F. Hottinger
IPC分类号： A61B8/08 , A61B17/34 , A61B19/00 , A61B10/00
CPC分类号： A61B8/0841 , A61B17/3403 , A61B8/0833 , A61B2090/3925
摘要： Method and apparatus for enhancing the reflection coefficient of a surgical instrument for use in conjunction with an apparatus for pulse-echo ultrasound imaging of an area of the body, by means of a diffraction grating disposed on the surgical instrument.
摘要翻译：用于通过设置在外科器械上的衍射光栅，增强与用于身体区域的脉冲回波超声成像的装置结合使用的外科器械的反射系数的方法和装置。

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