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| Number | Title | Issue Date |
| 7634303 | Dielectric element and method for generating a magnetic resonance image therewith A dielectric element is formed of a dielectric material exhibiting a magnetic resonance relaxation time, with a relaxation agent incorporated in the dielectric material that reduces the relaxation time of the dielectric material. The dielectric element is adapted fo... | 12/15/2009 |
| 7526330 | Magnetic resonance scanning apparatus Magnetic resonance scanning apparatus for imaging parts of a human head includes RF coils configured to receive an RF signal including upper and lower pairs of RF coils; a lower supporting structure; and an upper part. The lower supporting structure has an upper wal... | 04/28/2009 |
| 7432713 | Dielectric element, and magnetic resonance imaging method using same A dielectric element for positioning on an examination subject for locally influencing the B1 field distribution during magnetic resonance data acquisition contains a relaxation agent bound to mutually separated particles. The relaxation agent incorporates a paramag... | 10/07/2008 |
| 7423496 | Resonator with adjustable capacitance for medical device Systems and methods for a resonator with an adjustable capacitance for a medical device. In one embodiment, a resonator system includes a resonator device with an LC resonator circuit that has an adjustable capacitance, an inductor coil in series with the adjustable... | 09/09/2008 |
| 7417433 | Method, examination apparatus and antenna array for magnetic resonance data acquisition In a method for implementation of a magnetic resonance examination, and a magnetic resonance apparatus, and an array for acquisition of magnetic resonance signals, and a magnetic resonance signal at a magnetic resonance frequency are acquired from an examination reg... | 08/26/2008 |
| 7394256 | Wrist coil for magnetic resonance imaging Two halves of a separable wrist coil provide a coil volume closely conforming to a patient's hand yet separable for insertion and removal of the hand. The halves are hinged allowing easy one-handed operation of the coil in which an operator may stabilize the patient... | 07/01/2008 |
| 7369898 | System and method for responding to pulsed gradient magnetic fields using an implantable medical device Implantable medical devices, such as pacemakers or implantable cardioverter defibrillators (ICDs), are vulnerable to the powerful magnetic fields associated with magnetic resonance imaging (MRI). In particular, pulsed gradient components, if strong enough, can induc... | 05/06/2008 |
| 7365542 | Flexible RF coil assembly and method of making same An RF coil assembly includes a plurality of coil supports rotatably interconnected to each other. Each coil support is configured to rotate with respect to at least one adjoining coil support. A plurality of RF coils is connected to each coil support. ... | 04/29/2008 |
| 7345483 | Cavity resonator for MR systems In embodiments of the invention, a TEM coil for magnetic resonance imaging comprises a coil providing at least two head restraints, the head restraints having a means for audio communication to a subject and means for active or passive protection for a subject's hea... | 03/18/2008 |
| 7304277 | Resonator with adjustable capacitor for medical device An apparatus, system and method of a resonator device with an adjustable capacitor for allowing the resonance frequency (F) of the resonator device to continue to be matched to the Larmor frequency of the MRI system. The resonator device includes an inductor coil, a... | 12/04/2007 |
| 7294785 | Patient cable for medical measurements The invention relates to a patient cable for medical measurements performed in connection with Magnetic Resonance Imaging (MRI). In order to eliminate the risk of thermal injuries without compromising the signal-to-noise ratio more than what is required for patient ... | 11/13/2007 |
| 7292704 | Noise attenuating headset Systems and techniques are disclosed for a headset that may be used in an audio system used in a magnetic field. In one aspect, the system includes an inner set portion adapted to fit into an ear canal. A pneumatic port is disposed in the hole to couple audible soun... | 11/06/2007 |
| 7279664 | Resonator for medical device A resonator device including an induction coil, a conductive member positioned adjacent the induction coil, and a dielectric layer between at least a portion of the induction coil and the conductive member to form a capacitor structure. In one embodiment, the conduc... | 10/09/2007 |
| 7266406 | Magnetic resonance apparatus In a magnetic resonance apparatus, the transmission coil for generating the radiofrequency excitation field is stationarily arranged. The geometry of the transmission coil is permanently prescribed. For acquiring the magnetic resonance signal, the reception arrangem... | 09/04/2007 |
| 7251521 | Motion sensing MRI local coil A motion sensing MRI coil allows correction of motion-induced image artifacts by the MRI machine or on a machine independent basis using correction circuitry associated with the coil. ... | 07/31/2007 |
| 7237313 | Elongated medical device for intracorporal use Alternative designs, materials and manufacturing methods for medical devices. Some embodiments disclosed deal with attachment of an elongated structure, such as a wire or ribbon, or a tubular member, such as a coil, to an elongated member in an elongated device. For... | 07/03/2007 |
| 7227361 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (Z direction) and and at l... | 06/05/2007 |
| 7221974 | Uneven-counter-rotational coil based MRI RF coil array A MRI RF coil array is formed from a first coil having a null B1 point and a quasi-one-peak sensitivity profile, and a second coil oriented with respect to the first coil to reduce coupling. ... | 05/22/2007 |
| 7218104 | Squid detected NMR and MRI at ultralow fields Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is fre... | 05/15/2007 |
| 7215120 | Cavity resonator for MR systems An magnetic resonance apparatus in embodiments of the invention may include one or more of the following features: (a) a coil having at least two sections, (b) the at least two sections having a resonant circuit, (c) the at least two sections being wirelessly couple... | 05/08/2007 |
| 7197353 | Sensitivity encoding MRI acquisition method A sensitivity encoding method (SENSE) is used to acquire an MR image having a reduced field of view. The number of aliased replicates caused by surrounding object boundaries is calculated for each image pixel location to obtain optimal aliasing artifact suppression ... | 03/27/2007 |
| 7180294 | Method for planning and performing a magnetic resonance examination, magnetic resonance appliance and coil unit The invention relates to a method for planning and performing a magnetic resonance examination using a magnetic resonance appliance, in which at least one coil unit is arranged on the patient and at least two areas are examined. The coil unit comprises an input pane... | 02/20/2007 |
| 7177671 | RF coil, RF signal transmitter receiver, RF signal receiver, and magnetic resonance imaging system for the inferior abdomen For the purpose of providing an RF coil that enables satisfactory imaging of the prostate, the RF coil is composed of a first saddle coil and a second saddle coil. The first saddle coil has two loop portions opposed to each other so that they can sandwich the inferi... | 02/13/2007 |
| 7173422 | Generator for generating time-variable magnetic fields and magnetic resonance device In one aspect, a generator for generating time-variable magnetic fields is provided. The generator includes a gradient coil having conductors extending in an area defined by a hollow first cylinder, and having no conductors in a central area of the hollow first cyli... | 02/06/2007 |
| 7171254 | RF coil embedded with homogeneity enhancing material The present invention provides a system and method of improved homogeneity whereby at least a portion of an RF coil is filled with homogeneity enhancing material. Disposing the homogeneity enhancing material, such as perfluorocarbon, within the RF coil, implementati... | 01/30/2007 |
| 7161353 | Magnetic resonance tomograph with an insertable gradient coil and a bundled detachably coupled water and electrical supply line The present invention relates to a nuclear spin tomography device comprising a basic field magnet, a whole body gradient coil system with an HF antenna (1) surrounded by a suspension tube (2) which surrounds and restricts an internal chamber, guide rai... | 01/09/2007 |
| 7155271 | System and method for magnetic-resonance-guided electrophysiologic and ablation procedures A system and method for using magnetic resonance imaging to increase the accuracy of electrophysiologic procedures is disclosed. The system in its preferred embodiment provides an invasive combined electrophysiology and imaging antenna catheter which includes an RF ... | 12/26/2006 |
| 7133713 | Integrated multi-rail imaging system The imaging system can comprise a plurality of elongated rails, a scanhead assembly, and a small animal mount assembly. The scanhead assembly is selectively mounted onto a first rail and is constructed and arranged for movement in a linear bi-directional manner alon... | 11/07/2006 |
| 7116102 | SQUID detected NMR and MRI at ultralow fields Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is fre... | 10/03/2006 |
| 7109713 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least... | 09/19/2006 |
| 7098661 | Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet A magnetic resonance device with a cavity and with a basic field magnet and a gradient coil system, with the basic field magnet having a cavity that is bounded by an electrically conductive boundary surface of the basic field magnet and in which the gradient coil sy... | 08/29/2006 |
| 7082325 | Method and apparatus for examining a substance, particularly tissue, to characterize its type A method and apparatus for examining a substance volume to characterize its type, particularly useful for examining tissue to characterize it as cancerous or non-cancerous. The method comprises: applying a polarizing magnetic field through the examined substance; ap... | 07/25/2006 |
| 7035683 | Method for respiration-dependent triggering of a medical image exposure In a method for respiration-dependent triggering of a data acquisition event in an imaging procedure, a navigation system is employed in order to reproduce the position of a body part moving due to respiration on a scale, particularly a linear scale. Triggering for ... | 04/25/2006 |
| 7026816 | Gradient coil/RF antenna unit and magnetic resonance apparatus employing same A gradient coil radio-frequency antenna unit for a magnetic resonance apparatus has a radio-frequency antenna and a plate-shaped gradient coil unit to generate a gradient magnetic field in an examination region of the magnetic resonance apparatus. The gradient coil ... | 04/11/2006 |
| 7013171 | Medical imaging using patient support pads A medical imaging method utilizing pads for supporting the head and neck of a supine patient during the medical imaging, wherein the pads produce either flexion or extension of the cervical vertebrae. A cavity is provided in the pad to define an area of non-contact ... | 03/14/2006 |
| 7012430 | Transmit/receive phased array coil system A phased array coil system is presented for use with a magnetic resonance system. The phased array coil system includes a first coil, a second coil, and an interface subsystem. The first coil defines a first region and the second coil defines a second region, with t... | 03/14/2006 |
| 7006860 | Magnetic resonance imaging coil having vest support structure The vest provides a simple and intuitive coil support assuring proper alignment of the coils with the patient and providing support for coil elements encircling the opposed arms. A coil for receiving and/or transmitting radio-frequency signals for magnetic re... | 02/28/2006 |
| 7002347 | Local coil unit for a magnetic resonance apparatus A local coil unit for a magnetic resonance apparatus, which radiates a radio-frequency field into an examination subject, has a housing and at least a part of the housing is formed of an insulating dielectric material that passively compensates for an inhomogeneity ... | 02/21/2006 |
| 6998843 | RF coil and magnetic resonance imaging apparatus A magnetic resonance imaging apparatus acquires magnetic resonance signals by the PI method using an RF coil unit having basic coils serving as surface coils which are arrayed with at least two coils along a static magnetic field direction (z direction) and at least... | 02/14/2006 |
| 6998842 | MRI apparatus with low-frequency cable integrated into the patient carrier In a medical MRI apparatus, it is often desirable to have devices 62, 64 for communicating with or monitoring the patient 58 in the imaging volume 29 of the apparatus. Such devices need DC power or low-frequency connections with an area 70 | 02/14/2006 |