Abstract:
Provided are methods and compositions for detecting and treating normal, hypoplastic, ectopic or remnant tissue, organ or cells in a mammal. The method comprises parenterally injecting a mammalian subject, at a locus and by a route providing access to said tissue or organ, with a composition comprising antibody/fragment which specifically binds to targeted organ, tissue or cell. The antibody/fragment may be administered alone, or labeled or conjugated with an imaging, therapeutic, cytoprotective or activating agent.
Abstract:
The invention provides a method, and apparatus for practicing the method, of producing an electrical impedance tomographic image of an object, comprising the steps of: positioning a plurality of electrodes peripherally of the object in electrical contact therewith, repeatedly applying an electrical signal between at least two selected ones of the electrodes and measuring the resulting electrical potentials at others of the electrodes, the selection of electrodes to which the electrical signal is applied being different for different applications of the signal, registering the measured electrical potentials as measured data obtained during a plurality of different applications of the applied electrical signal, and processing the measured data to provide data defining the electrical impedance tomographic image of the object, characterised in that the processing of the measured data is effected by the use of spectral expansion of a matrix representation of the sensitivity of the measurement process to an a priori assumed approximation of the object to provide data defining a series of mutually orthogonal component or basis images and by deriving from the measured data relative weightings in accordance with which some or all of the basis images are to be combined to provide a reconstructed image constituting the said electrical impedance tomographic image of the object.
Abstract:
A device for depth-selective, non-invasive, local measurement of electrical impedance of organic and biological materials such as tissues from vegetable or animal origin comprising a probe (Fig. 1-3, 9a, 9b) with a number of electrodes (A, B, C) driven from an electronic control unit (F), in such a way that the electric current path defining the actual tissue under test is dependent upon a control signal. The probe is pressed toward the surface of the body part under test and by varying the control signal, it is possible to select the region under test within limits determined by the shapes, sizes and distances of the electrodes and the properties of the tissue under test. By means of combining results obtained with different control signals, it is possible to compute local impedance profiles.
Abstract:
The disclosure is directed to the combination of actual imaging data with simulated graphics to provide a two-dimensional composite display, such as on a computer screen display, of a three-dimensional relationship between actual images and simulated images. The apparatus and method of the invention are useful for medical applications, particularly stereotactic procedures.
Abstract:
A sensory delineator comprises a common probe (5) applicable to a healthy area of the patient's skin, a test probe (6) applicable to an area of skin suspected to be subject to nerve damage, a reference probe (7) applicable to an area of similar skin suspected to be healthy, a resistance comparison circuit (20) for comparing the resistance present between the common probe (5) and the reference probe (7) (the reference resistance) with the resistance present between the common probe (5) and the test probe (6) (the test resistance), and output means (10, 11, 12) for indicating whether the test resistance (5, 6) exceeds the reference resistance (5, 7).
Abstract:
The invention relates to medical means for determining the health condition in man. The method provides for selecting a symmetrical skin zone; determining on it topographic boundaries of skin sectors to be analyzed inside which the skin zone boundaries analogous to metamere tones of the human organism are determined; measuring the skin's electrical resistance in one of two neighbouring skin areas within the limits of the skin region and taking said resistance as a basis for determination of an anomaly of the pair of skin zones to be tested. The device comprises a common electrode (1), a measuring electrode (3), an electronic computing unit (8), an electric current source (4), a unit (11) for inserting the measuring electrode (3) into the skin zone to be tested, a drive for contacting the measuring electrode (3) with the skin zone to be tested and a unit (10) for processing the signal proportional to the skin's electrical resistance.
Abstract:
To detect, for example, the arrival of stools in the intestine, the electrical conditions (9) in the intestine are monitored by applying a voltage by means of a capacitative coupling (15) and electrodes (3e and 5e) to the electrolytic section (9) formed by the intestine, and the resultant current (I) is measured.
Abstract:
An active noise attenuation system (10) for patients undergoing diagnosis in equipment (1) which inherently produces undesirable sounds senses the noise experienced by the patient (P) and supplies a cancelling sound wave pattern to attenuate the noise experienced by the patient (P).
Abstract:
A separative imaging is provided to obtain separate images of water and fat using quantitative MRI while eliminating separation error caused by non-uniform magnetic field. When a spin echo signal is received, there are carried out the S0 scanning in which the phases of magnetization vectors of water and fat are in agreement with each other, the S1 scanning in which the phases of magnetization vectors are different by 180° and the S2 scanning in which the phases of magnetization vectors are different by 90°. A quantitative difference between water and fat is calculated from the image data of the S1 and S2 scannings, and a separation image of water and fat is obtained from the absolute value images of the S0 and S1 scannings. According to the invention which uses absolute value images of the S0 and S1 scannings, there does not develop any separation error caused by deviation in the phase that stems from non-uniform magnetic field. Further, the phase term due to non-uniform static magnetic field is removed and a quantitative difference between water and fat is calculated based on the image data of the S1 and S2 scannings. Water and fat component are identified for the separation images found from the absolute value data.
Abstract:
A probe for locating an endo-tracheal or endo-oesophageal tube in the trachea or oesophagus, comprises an elongate body (1) having a distal end (2) for insertion into the trachea or oesophagus of a patient, and a proximal end (10) adapted to remain external to the patient in use. A pair of electrodes (3, 4) is circumferentially spaced about the probe body, at or near the said distal end (2), and electrical conductors (5) lead between the electrodes (3, 4) and proximal end of the probe. The arrangement of the electrodes (3, 4) is such that the impedance measured between the conductors at the proximal end of the probe varies in dependance upon whether the prove is located in the oesophagus or the trachea of a patient. The probe may be a guide probe for the endo-tracheal or endo-oesophageal tube, or may itself be an endo-oesophageal tube which it is desired to insert.