Abstract:
Polyphosphonate ligands containing three or more phosphonate groups, combined with paramagnetic metal cations and administered in the form of pharmacologically acceptable salts, are useful as MRI contrast enhancement agents, which tend to localize in bone tissue without being conjugated to bone-specific biomolecules. Triazacyclononanes and tetraazacyclododecanes, with dihydroxyphosphorylmethyl or dihydroxyphosphorylethyl groups, optionally substituted at the methyl or ethyl bridges with alkyl, aryl, hydroxyl or amino groups, are particularly preferred.
Abstract:
An apparatus and method is disclosed for medically examining a patient's spine using a non-invasive technique such as computerized tomography (CT). In this apparatus and method the patient is seated in a generally vertically-oriented chair (10) which is tiltable in a forward and rearward direction, is pivotable relative to a vertical axis, is vertically movable and is stationary so as to adjustably induce gravitational effects on the patient's back. A pivotable chair back (12) can be included for controllably applying additional loads or flexion to the patient's back. An annularly-shaped examination device (52), such as a CT device, is horizontally positioned on a support frame (54) over the patient who is aligned with a central opening in the device (56). The device can be positioned about the patient and oriented horizontally or angularly displaced relative to the horizontal for optimizing or adjusting the generated image. The examination device may be tiltable about a horizontal axis transverse to the direction of tilting of the chair. Appropriate mechanisms are provided for the previously-described adjustment.
Abstract:
Enhanced magnetic resonance imaging contrast is provided by targeting paramagnetic material specifically to selected mammalian cell types. A carrier system for the paramagnetic material utilizes receptor mediated endocytosis to endow cell specificity and is formed by complexing the paramagnetic material to a glycoprotein-chelator conjugate. The conjugate is formed by bonding receptor-specific ligands to chelating agents through covalent bonding. The carrier not only exhibits a high degree of cell spcificity but also provides significant accumulation of the paramagnetic material within the cell to contribute to the improved enhancement of the magnetic resonance contrast.
Abstract:
A magnetic resonance imaging device of the invention effects the imaging by the multi-coil method while decreasing the hardware amount in the MR signal receiving system and decreasing the amount of operation for reconstituting the image. The magnetic resonance imaging device comprises a plurality of high-frequency coils for receiving MR signals that are arranged along the surface of an object of inspection and that have sensitive regions each overlapping with the neighboring ones, a plurality of signal synthesizers which are provided for the groups of MR signal receiving high-frequency coils whose sensitive regions are not overlapped by one another and which synthesize the signals received from the receiving high-frequency coils of the corresponding groups into one reception signal, a plurality of receivers which effect signal processing such as detection, A/D conversion and the like for the output signals from these plurality of signal synthesizers, and an image reconstitution device which reconstitutes the images based on output signals from the plurality of receivers and which synthesizes an image using a plurality of the reconstituted images.
Abstract:
The device comprises a reference electrode, a sensing electrode, and an electronic unit connected to each electrode. In the improvement according to the invention, the reference electrode (1) has a handle part (3) and a pointed part (4) in which are arranged an electrolyte (5) and a sensing contact connected to the pointed part (4) and impregnated with the electrolyte (5). The handle part (3) and the pointed part (4) are interconnected by a detachable connection.
Abstract:
A scan controller for NMR imaging apparatus which stores control signals having high amplitude resolution for a variety of sequences using small amounts of memory, and which easily assembles any sequence. The waveforms of the control signals are stored in a waveform memory (101) while the amplitudes thereof are stored in an amplitude memory (102) in the order of events in the sequence, and the duration designating values thereof are stored in a time memory (103) in the order of events in the sequence. The waveform memory (101) is read by an address counter (104) which operates on clocks determined by values read from the time memory (103), and the output thereof is converted through a first D/A converter (105) into an analog signal and is produced. At this moment, the amplitude of the output signal of the first D/A converter (105) is determined by applying a stored amplitude read from the amplitude memory (102) for every event as a fullscale value to the first D/A converter (105) through a second D/A converter (106).
Abstract:
An apparatus for diagnosing functions of internal organs and automatic nerves by applying a constant voltage across two or more electrodes attached to a living body, detecting and recording at high speeds an electric current that flows among the electrodes changes from time to time, and further operating predetermined parameters using the recorded data to obtain a variety of data related to the living body. The electrodes are scanned successively or arbitrarily by electrode scanning means (2), and a constant voltage is applied to the scanned electrodes by constant-voltage generating means (3). Instantaneous values of the current flowing between two electrodes are detected by detecting means (4) and are recorded in terms of digital values in recording means (5). Data recorded in recording means (5) are displayed by display means (7) via transmission means (8) and/or they are displayed by display means (7) after various parameters are operated by operation means (6) using the data recorded in recording means (5).
Abstract:
Ailments occur by inoperative states of the molecular mechanisms in the tissue. There are functional electrons in the molecular mechanisms, which rotate back and forth angularly within an arc of 45 degrees in normal operation When these electrons rotate more than 45 degrees, they keep on rotating toward 90 degrees, and 180 degrees. Because of operational interrelationship between molecules, adjacent molecules also become inoperative step by step, and lose their normal magnetic rejection to foreign molecules, and growth starts by invasion, as cancer. These depolarized electrons cannot return back to their normal polar normalizations, and therefore, artificial polar control is required. These mechanisms, however, are arrayed in the tissue three dimensionally, and the invention provides radiation of electron-attracting field that rotates two dimensionally in the tissue in at least three mutually perpendicular planes, for normalizing the depolarized electrons, as cure of cancer.
Abstract:
A diagnostic monitor for classifying biological tissue in which a light emitter (102) is optically coupled to the tissue to be diagnosed (145) and a light detector (174) is optically coupled to the tissue to detect a portion of the light which passes through the tissue. The tissue classifier (184) receives a signal from the detector and provides an optical classification output signal (195), wherein the tissue is classified by type or state, either for detection, localization, or imaging. A method of classifying tissue is also described.
Abstract:
An electronic party game comprises display cards (11a, 11b) for displaying questions to be asked to a player and a response monitor (10) for monitoring the player's psycho-physiological responses to the questions. The response monitor (10) comprises a housing (14) dimensioned to be fitted into the palm of the player answering the questions, the housing having an outside top surface (16) shaped to receive two extended fingers of the player, and a pair of electrodes (26, 27) extending through the top surface, each of the electrodes being positioned to contact one of the extended fingers near the tip thereof, bias means (24) operatively coupled to an outside portion of the housing for selectively biasing the player's fingers against the electrodes, an electronic circuit (15) located within the housing (14) which generates an electric current from one electrode to the other through the player's fingers and a voltage signal correlatable with the change in resistance resulting from the player's response to the questions, and an indicator (28, 29) which generates a signal indicative of the changes in resistance.