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5399984 Digital frequency generation device
New Patents
XXII
5401489
5399984 DIGITAL FREQUENCY GENERATION DEVICE Philippsburg, Frank Bernhard Assigned to Bruker Medizintechnik
GERMANY GmbH
A digital frequency generating device is comprised of a first digital frequency generator which generates a first output signal at a first frequency and a second digital frequency generator which generates a second output signal at a second frequency independent of the first frequency. Both the first and the second frequency generators run continuously and either can be connected to the generating device output by means of a multiplexer. Apparatus is provided to synchronize the two generators so that a continuous phase transition is maintained when the generating device output switches from the first output signal to the second output signal. This arrangement allows the device output to be shifted from a first frequency to a second frequency and then return to the first frequency output while maintaining the phase position of the first frequency output and is particularly useful in nuclear magnetic resonance applications.
5400787 INFLATABLE MAGNETIC RESONANCE IMAGING SENSING COIL ASSEMBLY POSITIONING AND RETAINING DEVICE AND METHOD FOR USING THE SAME Marandos Thomas A Commack, NY, UNITED STATES Assigned to Magna-Lab Inc An inflatable coil positioning device includes a coil, a first inflatable sleeve disposed radially about the coil and a second inflatable sleeve disposed radially within the coil. The first inflatable sleeve and the second inflatable sleeve each include at least two sections. The coil is placed about a target section of the patient to be imaged. The second inflatable sleeve is inflated until the coil is securely mounted on the target section. The mounted coil and target section of the patient are then placed within a predetermined section of a nuclear magnetic resonance imaging magnet. The first inflatable sleeve is inflated until the mounted coil and target section of the patient are securely retained within the predetermined section of the magnet.
BIOMODULATORS UNIVERSAL IMAGING
AS AGENTS
Born Jerry; Eshima Denni; Mann Paul L; Matwiyoff Nicholas Albuquerque, NM, UNITED STATES Assigned to University of New Mexico Biomodulators, optionally linked to imagingactive moieties, can be administered to a host to enhance images thereof, e.g., NMR-, X-ray- or radio-images, preferably by increasing aberrant tissue signal intensity. Biomodulators can also condition tissue to enhance uptake of otherwise non-specific imaging agents. When linked to drugs, biomodulators can target the same to particular sites in the body.
5401491 NMR CONTRAST AGENTS Sadler John P; Harding Charles T Harrow Weald, UNITED KINGDOM Assigned to Guerbet S A An agent for modifying H20 relaxation times in NMR diagnosis comprises a polysaccharide having chemically linked to it an organic complexant to which is complexed a paramagnetic metal ion. Polysaccharides include cellulose, starch, sepharose and dextran. Organic complexants include EDTA, DTPA and aminoethyl diphosphonate. A preferred metal ion is Gadolinium (III). The agents can be administereF cd orally or parenterally.
5401492 WATER INSOLUBLE NONMAGNETIC MANGANESE PARTICLES AS MAGNETIC RESONANCE CONTRACT ENHANCEMENT AGENTS Kellar Kenneth E; Karpinski Piotr H; Liversidge Elaine; Gunther Wolfgang H H; M&tire Gregory; Van Orman Barbara Malvem, PA, UNITED STATES Assigned to Sterling Winthrop Inc
XXII
5401489
5399984 DIGITAL FREQUENCY GENERATION DEVICE Philippsburg, Frank Bernhard Assigned to Bruker Medizintechnik
GERMANY GmbH
A digital frequency generating device is comprised of a first digital frequency generator which generates a first output signal at a first frequency and a second digital frequency generator which generates a second output signal at a second frequency independent of the first frequency. Both the first and the second frequency generators run continuously and either can be connected to the generating device output by means of a multiplexer. Apparatus is provided to synchronize the two generators so that a continuous phase transition is maintained when the generating device output switches from the first output signal to the second output signal. This arrangement allows the device output to be shifted from a first frequency to a second frequency and then return to the first frequency output while maintaining the phase position of the first frequency output and is particularly useful in nuclear magnetic resonance applications.
5400787 INFLATABLE MAGNETIC RESONANCE IMAGING SENSING COIL ASSEMBLY POSITIONING AND RETAINING DEVICE AND METHOD FOR USING THE SAME Marandos Thomas A Commack, NY, UNITED STATES Assigned to Magna-Lab Inc An inflatable coil positioning device includes a coil, a first inflatable sleeve disposed radially about the coil and a second inflatable sleeve disposed radially within the coil. The first inflatable sleeve and the second inflatable sleeve each include at least two sections. The coil is placed about a target section of the patient to be imaged. The second inflatable sleeve is inflated until the coil is securely mounted on the target section. The mounted coil and target section of the patient are then placed within a predetermined section of a nuclear magnetic resonance imaging magnet. The first inflatable sleeve is inflated until the mounted coil and target section of the patient are securely retained within the predetermined section of the magnet.
BIOMODULATORS UNIVERSAL IMAGING
AS AGENTS
Born Jerry; Eshima Denni; Mann Paul L; Matwiyoff Nicholas Albuquerque, NM, UNITED STATES Assigned to University of New Mexico Biomodulators, optionally linked to imagingactive moieties, can be administered to a host to enhance images thereof, e.g., NMR-, X-ray- or radio-images, preferably by increasing aberrant tissue signal intensity. Biomodulators can also condition tissue to enhance uptake of otherwise non-specific imaging agents. When linked to drugs, biomodulators can target the same to particular sites in the body.
5401491 NMR CONTRAST AGENTS Sadler John P; Harding Charles T Harrow Weald, UNITED KINGDOM Assigned to Guerbet S A An agent for modifying H20 relaxation times in NMR diagnosis comprises a polysaccharide having chemically linked to it an organic complexant to which is complexed a paramagnetic metal ion. Polysaccharides include cellulose, starch, sepharose and dextran. Organic complexants include EDTA, DTPA and aminoethyl diphosphonate. A preferred metal ion is Gadolinium (III). The agents can be administereF cd orally or parenterally.
5401492 WATER INSOLUBLE NONMAGNETIC MANGANESE PARTICLES AS MAGNETIC RESONANCE CONTRACT ENHANCEMENT AGENTS Kellar Kenneth E; Karpinski Piotr H; Liversidge Elaine; Gunther Wolfgang H H; M&tire Gregory; Van Orman Barbara Malvem, PA, UNITED STATES Assigned to Sterling Winthrop Inc