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| Number | Title | Issue Date |
| 4623864 | Magnetic field production coil for nuclear magnetic resonance imaging apparatus A 4 coil type air core coil magnet used for NMR imaging apparatus, wherein each coil assembly comprises a plurality of pancake coil elements in layers, and in each of the coil elements the configuration of a predetermined portion and the winding length of... | 11/18/1986 |
| 4621236 | Cylindrical electromagnet for an NMR imaging system Disclosed is a new type of electromagnet which can be used as a gradient coil in NMR imaging systems. The cylindrical electromagnet produces a transverse magnetic field perpendicular to the magnet axis which varies as the displacement along the magnet axi... | 11/04/1986 |
| 4617516 | Axial magnetic field gradient coil suitable for use with NMR apparatus A cylindrical coil for providing a magnetic field having a substantially linear gradient in an axial direction within the volume of the cylinder, as can be utilized in NMR apparatus, includes a cylindrical coil support structure and electrically conductiv... | 10/14/1986 |
| 4607225 | Apparatus and method for reducing spurious currents in NMR imaging apparatus induced by pulsed gradient fields NMR imaging apparatus having at least one pulsed magnetic field gradient coil generating pulsed magnetic gradient fields and having at least one other coil structure magnetically linked thereto (and therefore subject to induced pulsed currents which creat... | 08/19/1986 |
| 4587493 | Coil arrangement An adjustable signal coil, for example a solenoid, saddle or Helmholz type of signal coil which is used in a nuclear spin or NMR examination assembly, includes a pair of adjustable conductor guide and profile supports which hold one or more turns of a con... | 05/06/1986 |
| 4587490 | Electromagnet for NMR tomography An electromagnet for producing the constant magnetic field required in NMR tomography comprises a coil system (1, 2, 3, 4) of the Helmholtz double coil type. The coil system is enclosed in, and supported by, a stable cylindrical shell (5). The influence e... | 05/06/1986 |
| 4587504 | Magnet assembly for use in NMR apparatus A magnet assembly (1) particularly for use in NMR apparatus comprises a first superconducting coil assembly (A,A'-C,C') for generating a first magnetic field; and a second superconducting coil assembly (D-F) for generating a second magnetic field. The sec... | 05/06/1986 |
| 4560933 | Apparatus for adjustably mounting coils of a magnet system for nuclear spin tomography An adjusting and holding assembly for magnet coils in a nuclear spin tomography system includes mechanical adjusting devices connected to a frame structure for the mutual alignment of the connected to a frame structure for the mutual alignment of the base... | 12/24/1985 |
| 4538130 | Tunable segmented ring magnet and method of manufacture A segmented permanent ring magnet which is tunable to provide a preselected transverse magnetic field within the magnet interior is disclosed. The permanent magnet is constructed of material which has essentially linear behavior in the second quadrant of ... | 08/27/1985 |
| 4506224 | High-frequency field system for nuclear magnetic resonance apparatus An apparatus for generating a substantially homogeneous magnetic high-frequency field and/or for receiving high-frequency signals in a nuclear magnetic resonance apparatus, such as zeugmatography. The apparatus contains at least two conductor sections of ... | 03/19/1985 |
| 4490675 | Electromagnet for use in NMR tomography An electromagnet for producing the constant magnetic field required for use in NMR tomography consists of a cylindrical field coil and a stable cylindrical shell made of iron encompassing and simultaneously supporting the coil. The field coil may comprise... | 12/25/1984 |
| 4486711 | Gradient field coil system for nuclear spin tomography A gradient coil system for an image-generating, nuclear magnetic resonance tomographic apparatus, particularly a zeugmatographic apparatus. The gradient coil system is arranged on a hollow cylindrical support body having an axis which extends along the z-... | 12/04/1984 |
| 4468622 | Gradient coil system for nuclear magnetic resonance apparatus A gradient coil system for an image-generating, nuclear magnetic resonance tomographic apparatus, particularly a zeugmatographic apparatus. The gradient coil system is arranged on a support body of rotational symmetry, illustratively a hollow cylindrical ... | 08/28/1984 |
| 4456881 | Gradient-coil apparatus for a magnetic resonance system Apparatus for imposing a gradient magnetic field intensity on a static magnetic field intensity in a nuclear-magnetic-resonance (NMR) system. The gradient field has a predetermined error relationship with respect to a desired characteristic of the gradien... | 06/26/1984 |
| 4429277 | Nuclear magnetic resonance apparatus utilizing multiple magnetic fields A nuclear magnetic resonance apparatus for registering the nuclear magnetic resonance condition of atomic nuclei distributed in a body including first magnetic field generating means for generating a homogeneous static magnetic field having a thin beam sh... | 01/31/1984 |
| 4422042 | Nuclear resonance apparatus including means for rotating a magnetic field A nuclear magnetic resonance apparatus including magnet apparatus for generating a homogeneous static magnetic field between its magnetic poles, shims of a magnetic substance mounted on the magnetic poles to apply a first gradient magnetic field intensity... | 12/20/1983 |
| 4398150 | Ironless high-homogenety magnet and its application to nuclear magnetic resonance imaging The magnet essentially comprises at least three pairs of coaxial coils in order to increase the number of available parameters, to reduce the non-uniformity Bd, to provide an examination volume with a double access consisting of a longitudinal ... | 08/09/1983 |
| 4398149 | NMR Probe coil system A saddle coil for operation in the probe of an NMR spectrometer is formed from coil portions of opposite helicities disposed on a flexible insulating material, the outer windings of said portions connected by a linking conductor disposed on said insulatin... | 08/09/1983 |
| 4390494 | Directed beam fusion reaction with ion spin alignment A nuclear fusion system is disclosed wherein a pair of beams are to traverse common helical paths in a reaction zone. Two sources of oppositely directed gaseous ions are provided for producing the beams with means for establishing helical flow of ions in ... | 06/28/1983 |
| 4385277 | Topical nuclear magnetic resonance spectrometer and method A nuclear magnetic resonance (NMR) spectrometer includes a magnetic field profiling apparatus for producing a resulting static homogeneous magnetic field through a controllable volume and a magnetic field in an immediately adjacent surrounding volume of m... | 05/24/1983 |
| 4362993 | Imaging systems The invention provides RF field coils and detector coils for an NMR machine. The two coils are specially designed for their respective purpose, the transmit coil (5, 6) being rectangular and the received coil (7-11) substantially elliptical with defined a... | 12/07/1982 |
| 4350955 | Magnetic resonance apparatus Means for producing a region of homogeneous magnetic field remote from the source of the field, wherein two equal field sources are arranged axially so their fields oppose, producing a region near the plane perpendicular to the axis midway between the sou... | 09/21/1982 |
| 4339718 | Coil arrangements For NMR purposes a uniform magnetic field has been produced by field coils. It is known to use a cosinusoidal distribution to produce a uniform field. However, a large-diameter low-inductance coil is required for NMR and it is difficult to wind a small nu... | 07/13/1982 |
| 4320342 | Magnet coil arrangement for generating linear magnetic gradient fields The invention relates to a magnet coil arrangement for generating linear magnetic gradient fields by means of which a three-dimensional spin density distribution of a body can be reconstructed (spin imaging). The magnet coil arrangement inter alia consist... | 03/16/1982 |
| 4310799 | Coil winding for quadrupolar fields A coil is constructed such as that required in NMR imaging apparatus and in some NMR analytical applications, gradients can be established on selected axes within a uniform magnetic field. The windings of the coil also constitute an electrostatic screen w... | 01/12/1982 |
| 4213092 | NMR Spectrometer with superconducting coil having rectangular cross-section wire An NMR spectrometer includes a superconducting, solenoid coil formed of superconducting wire having a rectangular cross-section. The wire is formed of a non superconducting metal surrounding superconducting material having a small enough cross sectional a... | 07/15/1980 |
| 4185237 | Continuous measurement method and device In a method of measuring substances each exhibiting a derivative peak of the phase sensitive detector (PSD) output at a pair of specific magnetic field intensities by sweeping the field, the magnetic field is switched between the specific magnetic field i... | 01/22/1980 |
| 4180769 | Superconducting solenoid with compensation for axial gradients A superconducting solenoid with compensation for axial gradients of orders 1 through 7 is formed of a superconducting wire having a rectangular cross-section. The wire is wound as a solenoid having a longitudinal axis and multiple helical layers, adjacent... | 12/25/1979 |
| 4152638 | Apparatus for the production of magnetic fields for polarizing and inducing resonance in a flowing medium Apparatus for the measurement of mass throughput in a flowing medium comprises a conduit between the pole pieces of an electromagnet which produces polarizing and resonating fields. The pole pieces are shaped to provide a first section in which the separa... | 05/01/1979 |
