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| Number | Title | Issue Date |
| 5361764 | Magnetic resonance imaging foot coil assembly A magnetic resonance imaging receiver system for producing high resolution images of the foot and ankle regions of a human subject. The magnetic resonance imaging receiver comprises an antenna for receiving resonance signals produced by a magnetic resonan... | 11/08/1994 |
| 5357958 | Interventional MRI system and RF coils therefore An MRI RF coil utilizes a helical conductor having a plurality of turns and a non-uniform pitch between turns along at least a portion of the axial length of the coil. The non-uniform pitch is disposed so as to accommodate interventional procedures and/or... | 10/25/1994 |
| 5351688 | NMR quadrature detection solenoidal coils An NMR shoulder coil includes a generally ring-shaped transverse parallel-wound solenoidal coil oriented in a vertical plane. Annular anterior and posterior parallel-wound solenoids are mounted perpendicularly and diametric to the transverse vertical coil... | 10/04/1994 |
| 5349956 | Apparatus and method for use in medical imaging An apparatus and method for use in medical imaging simulate within an imaging coil normal movements of body parts such as joints, and improve imaging of soft tissue and bony parts as compared to a static system in which images are taken of a joint in only... | 09/27/1994 |
| 5348010 | Intracavity probe and interface device for MRI imaging and spectroscopy An insertable pickup probe and interface network for magnetic resonance imaging and spectroscopy. The pickup probe in the preferred embodiment is for use in imaging the male prostate and comprises an elongated shaft supporting a patient interface balloon ... | 09/20/1994 |
| 5343862 | NMR shoulder coil A shoulder coil of the present invention includes a generally ring-shaped transverse housing oriented in a vertical plane with a parallel wound solenoid supported therein. Annular anterior and posterior housings are mounted diametric on said transverse ho... | 09/06/1994 |
| 5343580 | Indexing assembly for shoulder imaging A self-contained shoulder indexing apparatus is for use during imaging of a shoulder joint of a patient, with the patient lying on an imaging table slidable into and out of a primary imaging coil. The self-contained shoulder indexing apparatus includes an... | 09/06/1994 |
| 5329234 | Surface coil holder for magnetic resonance imaging A surface coil holder for magnetic resonance imaging wherein the holder is provided with straps or tape for securing the holder to an MRI table and a body part of a patient. By preventing movement of the holder and the patient's body part during examinati... | 07/12/1994 |
| 5327898 | Signal receiving coil device for MRI apparatus A signal receiving coil device for an MRI apparatus, to be fitted to a patient for detecting nuclear magnetic resonance signals, comprising a coil member assuming a substantially cylindrical shape when fitted to the patient and having at least one flexibl... | 07/12/1994 |
| 5323776 | MRI compatible pulse oximetry system Magnetic resonance imaging hardware (A) defines a patient receiving region (20) that is surrounded by a bore liner (22). A socket (50) is mounted in the bore liner with an appropriate receptacle for receiving a standard plug (52) of a conventional pulse o... | 06/28/1994 |
| 5323778 | Method and apparatus for magnetic resonance imaging and heating tissues The present invention relates to apparatus and a method for imaging and heating body tissues with one probe, through use of a magnetic resonance imaging radio frequency source. The device may also be configured with a thermocouple to provide temperature-c... | 06/28/1994 |
| 5311134 | Magnetic resonance imaging system An MR imaging system comprises a first gradient coil unit(first G coil unit) for providing magnetic gradients superimposed in a static magnetic field, a first RF coil unit for transmitting an RF pulse to a patient and receiving a MR signal from the patien... | 05/10/1994 |
| 5307806 | NMR pelvic coil A NMR pelvic coil includes an anterior housing with a support arm projecting rearwardly therefrom, and a posterior housing with a base arm projecting rearwardly therefrom, the two housings pivotally connected at the rearward ends of their respective suppo... | 05/03/1994 |
| 5296813 | Magnetic resonance scanner with improved packaging for circuitry within the magnetic field A magnetic resonance imaging apparatus defines an examination region (14) within which main magnets (10) create a uniform magnetic field. Magnetic resonance is excited in dipoles of a subject within the examination region causing the generation of magneti... | 03/22/1994 |
| 5284144 | Apparatus for hyperthermia treatment of cancer A hyperthermia applicator/MRI probe assembly for hyperthermia treatment of a subject. The assembly includes a hyperthermia applicator for heating target regions of a subject and a MRI probe which is utilized to monitor temperatures within the heating regi... | 02/08/1994 |
| 5281918 | Sample head for NMR tomography A sample head for the NMR tomography is disclosed. The sample head has at least two hollow-cylindrical housings, arranged beside each other along a common axis. Each of the housings has an outer cylindrical wall consisting of essentially continuous, elect... | 01/25/1994 |
| 5280249 | Circularly polarizing local antenna for a nuclear magnetic resonance apparatus In a circularly polarizing local antenna for a nuclear magnetic resonance imaging apparatus, a first antenna system is fashioned as a frame coil. A second antenna system has two sub-coils arranged lying opposite one another, which are both penetrated by t... | 01/18/1994 |
| 5280246 | Nuclear magnetic resonance apparatus A nuclear magnetic resonance apparatus receives nuclear magnetic resonance signals from an object under test with an RF probe which is an array of coils, implements down-frequency conversion with frequency converters for the received signals in multiple c... | 01/18/1994 |
| 5280248 | Biplanar RF coil for magnetic resonance imaging systems A superconducting magnet (10) generates a uniform, static magnetic field through a central bore (12) along its longitudinal or z-axis. A biplanar gradient coil assembly (44) is inserted into the bore to create gradients across the static magnetic field al... | 01/18/1994 |
| 5277183 | NMR local coil for foot imaging A radio frequency coil for receiving NMR signals in the imaging of a human foot includes a bird cage structure of longitudinally separated loops joined by longitudinal segments. Some of the segments include transverse portions which define an appendant vo... | 01/11/1994 |
| 5278503 | Configuration for the compensation of external magnetic field interferences in a nuclear resonance spectrometer with superconducting magnet coil In order to compensate external interfering fields inside a superconducting magnet coil, these interfering fields are measured outside of the magnet coil by means of a small induction coil in order to obtain a regulation signal, and, by means of a regulat... | 01/11/1994 |
| 5261403 | Magnetic resonance imaging apparatus In an MR imaging apparatus, a receiving coil comprising an upper coil and a lower coil which jointly sandwitch a desired part of a body to be inspected in an openable and closable manner, the upper and the lower coils being connected by connection means c... | 11/16/1993 |
| 5256971 | Multiple loop coil with improved decoupling A quadrature coil for receiving NMR signals in magnetic resonance imaging employs as few as two substantially coplanar overlapping loops having sensitivity along perpendicular lines in a region of sensitivity. Each loop is sensitive to a fluctuating unifo... | 10/26/1993 |
| 5241272 | Circularly polarizing local antenna for a nuclear magnetic resonance imaging apparatus A local antenna system for generating and receiving circularly-polarized, high-frequency magnetic fields in a nuclear magnetic resonance imaging apparatus has two coil groups disposed to define an examination volume therebetween, with each coil group havi... | 08/31/1993 |
| 5233992 | MRI method for high liver iron measurement using magnetic susceptibility induced field distortions A subject (22), such as a human patient, is positioned with a region of interest (24), such as the liver, close proximity to a phantom (12). A Volume image through the liver, the phantom, and adjacent portions of the subject are collected (40) with a magn... | 08/10/1993 |
| 5235283 | Gradient coil system for a nuclear magnetic resonance tomography apparatus which reduces acoustic noise The supply of current pulses to gradient coils in a magnetic resonance imaging tomography apparatus results in physical vibration of the coils, causing acoustic noise. For reducing such acoustic noise, a gradient coil system is disclosed wherein the indiv... | 08/10/1993 |
| 5221902 | NMR neck coil with passive decoupling A whole volume neck coil for MRI includes an anterior and posterior saddle coil, the latter attached to a base. The anterior coil is held in an open framework, hinged against an extension tower attached to the base. The hinge axis is angled to the medial ... | 06/22/1993 |
| 5221901 | Double surface coil for a nuclear magnetic resonance apparatus A double surface coil for a nuclear magnetic resonance apparatus as two individual coils, each individual coils being formed by two sub-coils connected in parallel. A series circuit of a capacitor and an inductor is connected in each sub-coil, with a seri... | 06/22/1993 |
| 5216367 | MR imaging apparatus capable of automatically selecting multiple surface coils In a magnetic resonance imaging apparatus, there are provided plural receiver coils over a portion of a biological body. Data on a coil energizing sequence is previously stored in a memory. An only limited number of receiving coils are sequentially energi... | 06/01/1993 |
| 5201312 | Antennae for high-resolution magnetic resonance imaging of the eye An antenna for NMR imaging of the eye of a patient includes a small circular or oval surface coil which is locatable immediately adjacent to the eye of the patient and supported by a member having a shape contoured to fit in the region between the zygomat... | 04/13/1993 |
| 5201311 | Spatially-localized chemical-reaction-rate NMR spectroscopic imaging A method for providing information about the rate of a selected chemical reaction in each of at least one selected volume elements (voxels) in a sample includes the steps of: exciting a reaction-rate-dependent chemical-shift spectrum, by a selected stimul... | 04/13/1993 |
| 5197474 | Patient bed in a magnetic resonance imaging apparatus A mechanism for transporting a patient to a magnetic resonance unit. A coil seat is mounted on the upper surface of a lower bed and the lower bed is mounted for movement relative to a magnet. An upper bed is mounted for movement on the lower bed. In the p... | 03/30/1993 |
| 5198768 | Quadrature surface coil array A quadrature surface coil array comprising a plurality of single loop surface coils interspersed with a plurality of adjacent double loop surface coils, at least some of said surface coils overlapping the ends of adjacent surface coils and said double loo... | 03/30/1993 |
| 5183045 | NMR measuring method and measuring apparatus for tissue of a living body There is carried out an NMR measurement in which a receiver coil (7) for receiving an NMR free induction signal comes in contact with or in close vicinity to one side of tissue of a living body (1) immersed in a perfusion solution (4), while a portion or ... | 02/02/1993 |
| 5160891 | Surface coil array receiver Receiver circuitry for a surface coil array used in magnetic resonance diagnostic systems, said circuitry minimizes reflections and thus relaxes the prior art necessity for balancing the individual receiver channel for each array by obtaining quadrature s... | 11/03/1992 |
| 5150710 | Variable position surface coil stabilizer for magnetic resonance imaging In a nuclear magnetic resonance imaging system, a receive-only RF surface coil is fixedly supported on a non-metallic portable base by a non-metallic flexible support which permits the coil to be translated along any one of three orthogonal directions and... | 09/29/1992 |
| 5143068 | Flexible and curved radio frequency (RF) coil for the human shoulder for magnetic resonance imaging apparatus A flexible, conformally fitted coil for imaging of the human shoulder and topologically similar specimens is in the form of a band of flexible conductive foil covered by a soft flexible insulating material. The geometry of the coil is such that it can pas... | 09/01/1992 |
| 5139024 | Resonators for magnetic resonance imaging Single-turn loop-gap solenoidal resonators for establishing RF fields (B1) transverse to the static B0 field of a magnetic resonance imaging system. Tubular forms of dielectric (plastic) material have conductive foil bands attached t... | 08/18/1992 |
| 5136244 | Articulated NMR shoulder coil with fusible link A whole volume shoulder coil for MRI includes two opposed coils one attached by a knuckle held captive in a sliding track to provide bounded translation rotation and angling of that coil with respect to the opposed coil. The coil position may be fixed by ... | 08/04/1992 |
| 5130656 | Surface coil for a nuclear magnetic resonance apparatus A surface coil for a nuclear magnetic resonance apparatus has a number of conductor sections arranged relative to each other. These sections can be connected to one another and to a reception unit by employing switches to enclose a preferable conductor ge... | 07/14/1992 |
