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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 6340887 | Multiple contrast FSE approach to black blood angiography with redundant and supplementary vascular information A black blood magnetic resonance angiogram is produced by exciting dipoles (52) and repeatedly inverting the resonance (541, 542, . . . ) to produce a series of magnetic resonance echoes (561, 562, . . . ). Earl... | 01/22/2002 |
| 6339652 | Source-assisted attenuation correction for emission computed tomography A method of ML-EM image reconstruction is provided for use in connection with a diagnostic imaging apparatus (10) that generates projection data. The method includes collecting projection data, including measured emission projection data and measured tran... | 01/15/2002 |
| 6327327 | Multi-channel segmented slip ring A computerized tomography system includes a stationary section (A) and a rotating section electrically linked by at least one interconnecting slip ring (D). On one side the slip ring (D) is configured as a series of electrically conductive segments (20A-2... | 12/04/2001 |
| 6323649 | Modular MRI gradient amplifier using unipolar PWM drive A gradient amplifier (20), for driving a gradient coil (22) of an MRI scanner, includes a plurality of first modules (60). The first modules (60) provide unipolar PWM control of an input supplied thereto to generate a unipolar waveform. A high voltage DC ... | 11/27/2001 |
| 6320385 | Multi-channel balun for magnetic resonance apparatus A multi-channel balun (70, 72) blocks stray RF current from flowing on shield conductors of coaxial RF cables of a magnetic resonance apparatus. The balun comprises a parallel combination of an even number of helical coils of shielded transmission cable (... | 11/20/2001 |
| 6314311 | Movable mirror laser registration system A registration system (200) for use in connection with an image guided surgery system (10) is provided. It includes a medical diagnostic imaging apparatus (100) for collecting image data from a subject (310). An image data processor (130) reconstructs an ... | 11/06/2001 |
| 6313629 | Prescan calibration of spatially dependent data errors in single echo sequences A method of magnetic resonance imaging includes subjecting a number of regions of an object being imaged to a magnetic resonance calibration pulse sequence. Each calibration pulse sequence generates a single calibration echo. Each of the calibration echoe... | 11/06/2001 |
| 6310968 | Source-assisted attenuation correction for emission computed tomography A method of ML-EM image reconstruction is provided for use in connection with a diagnostic imaging apparatus (10) that generates projection data. The method includes collecting projection data, including measured emission projection data. An initial emiss... | 10/30/2001 |
| 6307373 | Anti-aliasing transmitter coil array for magnetic resonance In a magnetic resonance imaging apparatus 1 there is a region of good i.e. uniform field between A and B but, where the field falls off, say, at D, the r.f. excitation pulse can produce an alias image of D which overlies the desired image of say, B. To re... | 10/23/2001 |
| 6294916 | NMR and ESR probes for closed loop control of gradient fields Magnetic resonance imaging apparatus uses magnetic field gradients X, Y, Z to spatially encode the magnetic signals arising from a patient on a couch 2 in bore 1 of a main magnet. Thermal stresses arising from aggressive gradients during multiple acquisit... | 09/25/2001 |
| 6278275 | Gradient coil set with non-zero first gradient field vector derivative A gradient coil assembly (22) generates substantially linear magnetic gradients across the central portion of an examination region (14). The gradient coil assembly (22) includes primary x, y, and z-gradient coils (62, 66, 68) which generate a gradient ma... | 08/21/2001 |
| 6276145 | Aerostatic CT suspension A CT scanner (10) for obtaining a medical diagnostic image of a subject includes a stationary gantry (12), and a rotating gantry (16) rotatably supported on the stationary gantry (12) for rotation about the subject. A fluid bearing (18) is interposed betw... | 08/21/2001 |
| 6278276 | Phased array gradient coil set with an off center gradient field sweet spot A gradient coil assembly (22) generates substantially linear gradient magnetic fields through an examination region (14). The gradient coil assembly (22) includes a pair of primary gradient coil sets (22a, 22b) and a pair of shield coil sets (23a, 23b) wh... | 08/21/2001 |
| 6262576 | Phased array planar gradient coil set for MRI systems A uniplanar gradient coil assembly (40) generates substantially linear gradient magnetic fields through an examination region (14). The gradient coil assembly (40) includes at least a pair of primary uniplanar gradient coil sets (40a, 40b) and a pair of s... | 07/17/2001 |
| 6255820 | Variable bandwidth MRI data collection The present invention is directed to an MRI apparatus. It includes a main magnet 12 that generates a substantially uniform temporally constant main magnetic field, B0, through an examination region 14 wherein an object being imaged is positione... | 07/03/2001 |
| 6252400 | Spin and field echo (safe) FSE The present invention is directed to an MRI apparatus including a main magnet (12) that generates a substantially uniform temporally constant main magnetic field, B0, through an examination region (14) wherein an object being imaged is position... | 06/26/2001 |
| 6236203 | Super shielding of finite length structures in open magnetic and electric systems Methods of designing an active shield for substantially zeroing an electro-magnetic field on one side of a predetermined boundary in open magnetic resonance imaging systems and in open electric systems are provided. The methods include defining a finite l... | 05/22/2001 |
| 6236708 | 2D and 3D tomographic X-ray imaging using flat panel detectors A penetrating radiation source (14) is disposed on one side of a object (10) which is on a object support (12). A flat panel radiation detector (18) is stationarily disposed on the opposite side of the object (10) than the source (14). A moving system (16... | 05/22/2001 |
| 6229870 | Multiple fan beam computed tomography system A CT scanner includes a stationary gantry (A) defining an examination region (12) and a rotating gantry (C) which rotates about the examination region. Multiple fan beam generators (B), each capable of producing a beam of radiation directed through the ex... | 05/08/2001 |
| 6222902 | Real-time tomographic system with flat panel detectors An object (14) is positioned on an object support (16). A radiation source (10) projects a beam of radiation through a region of interest (12) of the object. A plurality of focal planes (F1, F2, . . . , Fn) mark the center... | 04/24/2001 |
| 6218838 | MRI magnet with high homogeneity, patient access, and low forces on the driver coils A pair of annular magnets (10) generate a vertical magnetic flux field through an imaging volume (12). The flux is focused by a pair of Rose rings (26) of high cobalt steel. A high order shim set includes a plurality of permanently magnetized or magnetize... | 04/17/2001 |
| 6211677 | Lung coil for imaging hyper-polarized gas in an MRI scanner In a magnetic resonance imaging apparatus, a whole-body RF coil (42) disposed circumferentially around an examination region (14) is tuned to a first Larmor frequency, e.g., that of hydrogen. A first transmitter (44) transmits RF signals at the first Larm... | 04/03/2001 |
| 6211523 | Autocontouring device for gamma camera using radioactive source and transverse motion A nuclear medicine gamma camera for diagnostic imaging includes a rotating gantry (16) which defines a subject receiving aperture (18). A support (10) supports a subject (12) being examined within the subject receiving aperture (18). A plurality of detect... | 04/03/2001 |
| 6208706 | Method and apparatus to increase the operational time of a tomographic scanner A CT scanner includes a stationary gantry (10) defining an examination region (12) and a rotating gantry (16) which rotates about the examination region. At least two x-ray tubes (18a, 18b), each capable of producing a beam of radiation directed through t... | 03/27/2001 |
| 6208141 | Method and apparatus for mounting gradient tube to diagnostic imaging device A diagnostic imaging apparatus such as a magnetic resonance imaging (MRI) device includes a vacuum vessel (24) having a central helium reservoir (16) in which superconducting magnetic coil windings (10) are maintained at a superconducting temperature. The... | 03/27/2001 |
| 6208144 | Magnetic resonance operating room magnet A region of interest of a subject (20) on a subject support (18) is positioned above a ferrous pedestal (16, 116) that is supported on a ferrous floor yoke portion (76, 176). A lower imaging coil assembly (50) including a lower gradient coil (52), a radio... | 03/27/2001 |
| 6205347 | Separate and combined multi-modality diagnostic imaging system A multi-modality diagnostic imaging system includes a first imaging subsystem (A), such as a computed tomographic (CT) system, for performing a first imaging procedure on a subject. A second imaging subsystem (B), such as a nuclear medicine system (NUC), ... | 03/20/2001 |
| 6200024 | Virtual C-arm robotic positioning system for use in radiographic imaging equipment A virtual C-arm support system 40 is used in a radiographic imaging apparatus of the type including an x-ray source 44 and an x-ray detector 48. The support system includes a first positioning system 42 operatively connected to the x-ray source for select... | 03/13/2001 |
| 6198961 | Interventional radio frequency coil assembly for magnetic resonance (MR) guided neurosurgery A diagnostic imaging apparatus such as a magnetic resonance imaging (MRI) device includes a gradient coil assembly (34) and an RF coil (36) disposed proximate pole faces (30, 32). An interventional head coil assembly (40) includes a base (90), a head fram... | 03/06/2001 |
| 6198288 | High power, multiple-frequency transmit-receive switch in magnetic resonance imaging A magnetic imaging apparatus includes an RF coil (F) in electrical communication with an RF signal generator (C) and a receiver (G) through an interface circuit (E). The signal generator transmits resonance excitation signals at one of at least two resona... | 03/06/2001 |
| 6171240 | MRI RF catheter coil A radio frequency coil (12, 19) adapted for use in interventional magnetic resonance imaging consists of a loop of an elongated electric conductor arranged to form a twisted wire pair (12, 19) and means associated with it for operating the coil both in tr... | 01/09/2001 |
| 6169401 | Flexible open quadrature highpass ladder structure RF surface coil in magnetic resonance imaging A magnetic imaging apparatus generates a main magnetic field longitudinally through an image region and excites magnetic resonance in selected nuclei in a patient or subject disposed in the image area. The resonating nuclei generate radio frequency magnet... | 01/02/2001 |
| 6163617 | Backprojection with a multi-color rendering engine A method of diagnostic image reconstruction from projection data is provided. It includes generating projection data followed by a convolution of the same. The convolved projection data is then scaled into unsigned, fixed precision words of a predetermine... | 12/19/2000 |
| 6154516 | Cardiac CT system A cardiac gated spiral CT scanner (10) has a source of penetrating radiation (20) arranged for rotation about an examination region (14) having a central axis extending in a z direction. The source (20) emits a beam of radiation (22) that passes through t... | 11/28/2000 |
| 6154521 | Gyrating anode x-ray tube An x-ray tube (10) includes an anode (14) connected to a mechanical drive (36). The mechanical drive oscillates the anode in a gyrating motion relative to a body of the x-ray tube. The mechanical drive is operatively connected to the anode via a bellows a... | 11/28/2000 |
| 6149592 | Integrated fluoroscopic projection image data, volumetric image data, and surgical device position data A patient supported on a patient support (12) is moved into a bore (22) of a planning imaging device, such as a CT scanner (20). A three-dimensional diagnostic image in three-dimensional diagnostic image space is generated and stored in a memory (130). Th... | 11/21/2000 |
| 6147495 | Magnetic resonance imaging with integrated poleface features A magnetic resonance imaging scanner includes a pair of opposing pole pieces (20, 20') disposed symmetrically about an imaging volume (24) facing one another. The pair of opposing pole pieces (20, 20') includes a first ferrous pole piece (20) which has a ... | 11/14/2000 |
| 6144720 | Iron oxide coating for x-ray tube rotors A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) in the path of a stream of electrons (A) to generate an x-ray beam (B) and heat. The rotor includes an armature (36) which rotates around a sta... | 11/07/2000 |
| 6137109 | Autonomous tangential motion control in a multi-detector gamma camera The configuration of a multi-head gamma camera requires coordination between tangential and radial motions so that the detectors maintain a desired orientation, either corner to corner or overlapping. Based on the radial and angular positions of the detec... | 10/24/2000 |
| 6130430 | Septal artifact cancellation in positron emission tomography A camera for use in coincidence imaging includes detector heads (10a, 10b) disposed about an examination region (12). The detector heads (10a, 10b) include septa (36) for absorbing radiation having a relatively large axial angle. The septa, however, cause... | 10/10/2000 |
