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| Number | Title | Issue Date |
| 4323783 | Tomographic apparatus for producing transverse layer images In an exemplary embodiment, a radiation measuring arrangement contains a radiation source as well as a radiation receiver which determines the radiation intensity behind the radiography subject. For irradiation of the radiography subject from different di... | 04/06/1982 |
| 4302675 | Method of multiplanar emission tomography and apparatus therefor A method of emission tomography using a gamma camera and a rotating collimator having an array of a large number of slanted, small diameter holes. A planar projection corresponding to each angular orientation assumed by the collimator is recorded. From th... | 11/24/1981 |
| 4286156 | Device for determining the spatial absorption distribution in a plane of examination The device in accordance with the invention comprises detectors, a first part of which is not struck by radiation during measurement of the useful signal, whilst a second part which is struck directly by the radiation during the measurement of the useful ... | 08/25/1981 |
| 4277685 | Adjustable collimator In a rotating fan beam tomographic scanner there is included an adjustable collimator and shutter assembly. The assembly includes a fan angle collimation cylinder having a plurality of different length slots through which the beam may pass for adjusting t... | 07/07/1981 |
| 4266139 | Composite shielding means and mounting means for x-ray machines A shielding means for an x-ray machine comprised of a base plate which removably receives overlays masking out selective portions of the base plate to control the passage of the x-rays therethrough. The overlays are generally identical and provided with c... | 05/05/1981 |
| 4250425 | Rotating anode X-ray tube for tomodensitometers A hollow, cylindrical, rotating anode, X-ray tube for tomodensitometers. This tube contains a bell-shaped, hollow, cylindrical anode functioning by transmission, which is swept on its inner surface by an electron beam and produces in cooperation with a collima... | 02/10/1981 |
| 4232226 | Diagnostic installation for producing tomographic images The installation comprises a support table for a patient, a plurality of x-ray sources or similar radiation sources, arranged in a series or planar array, with step-by-step activation of the radiation sources in any desired sequence. The beam of rays and ... | 11/04/1980 |
| 4220866 | Electron applicator In the illustrated embodiment, an electron collimator is to be mounted on the accessory holder of an electron accelerator. In radiation therapy, the down beam end of the applicator is to contact the patient to establish a precise spacing of the electron s... | 09/02/1980 |
| 4213051 | Dual acting slit control mechanism A dual acting control system for mass spectrometers which permits adjustment of the collimating slit width and centering of the collimating slit while using only one vacuum penetration. Coaxial shafts, each with independent vacuum bellows are used to inde... | 07/15/1980 |
| 4200799 | Tomographing device A computed tomograph system comprises a radiation source for emitting a fan-shaped beam of penetrating radiation of included angle , and a radiation detector comprising a plurality of radiation detection cells on which the fan-shaped beam falls. Be... | 04/29/1980 |
| 4200803 | Multiple collimator apparatus with angularly adjustable collimator tubes In addition to a fixed collimator bore on the upper part of which a detec for gamma rays can be mounted, a lead plug or plate body has mostly conical bores in which angularly adjustable collimator tube bodies are seated. In one embodiment the lower part ... | 04/29/1980 |
| 4200800 | Reduced dose CT scanning A CT scanner having a rotating X-ray source and a stationary circular array of 600 contiguous detectors includes a sliding shutter mechanism incorporated in the precollimator system that prevents detectors at the beginning and at the end of a scan from re... | 04/29/1980 |
| 4152604 | Collimator control and cassette position monitor for a diagnostic X-ray system An improved collimator control and cassette position monitor for a diagnostic X-ray system. The system includes a position sensing cassette holder or tray which produces a pair of analog voltages corresponding to a long and a cross edge of a cassette in t... | 05/01/1979 |
| 4145616 | X-ray source assembly X-ray source assembly includes an X-ray tube comprising a filament for emitting an electron beam, a grid electrode for focusing the electron beam from the filament and a rotating anode-target on which the electron beam impinges thereby to generate an X-ra... | 03/20/1979 |
| 4143273 | Variable collimator An automatic variable collimator which controls the width and thickness of X-ray beams in X-ray diagnostic medical equipment, and which is particularly adapted for use with computerized axial tomographic scanners. A two-part collimator is provided which s... | 03/06/1979 |
| 4126786 | Radiography In a computerized tomographic system in which a fan of radiation effects a rotational scan and the detectors are fixed, collimation is achieved by means of plates hinged adjacent the detectors. The plates are moved by means of a ring, the center of which ... | 11/21/1978 |
| 4122350 | Adjustable collimator for mammography An adjustable collimator is provided for use in mammography in which there is a mounting ring for securing the collimator to an x-ray source; a collimating cone having a plurality of leaves, each pivotably secured at one end thereof to said mounting ring ... | 10/24/1978 |
| 4118632 | Nuclear medicine diagnostic instrument for the determination of the distribution pattern of a radioactive radiation source The invention relates to a nuclear medical diagnostic instrument for the determination of the distribution pattern of substances emitting gamma quanta and inserted in a body, which consists essentially of a detector with a localization arrangement and two... | 10/03/1978 |
| 4092544 | X-ray photographic apparatus comprising light source and receiving device arranged to facilitate the alignment of the apparatus This invention discloses an X-ray photography device having an X-ray tube associated with a primary diaphragm for defining or limiting the X-ray beam by partially blocking the same. The X-ray tube is mounted or carried in such a fashion that the beam can ... | 05/30/1978 |
| 4085328 | X-ray examining device An X-ray examining device comprises an optical aperture including adjustable sector-like laminations. The laminations are rotatable about axes perpendicular to the optical axis. The edges of the laminations are adapted to the optical system so that proper... | 04/18/1978 |
| 4071767 | Palpator for x-ray spot film device In a spot film device, the inner and main carriages for a film cassette are positioned with reversible servo motors. An X-ray grid is mounted on the bottom of the main carriage and a cross grid is mounted on tracks beneath the carriage such that the cross... | 01/31/1978 |
| 4066901 | Tomographic scanning apparatus with improved collimator structure An axial tomography system is disclosed which includes an assembly rotatable about an axis extending along a central opening defined therein, and means for positioning the body portion to be examined within the central opening so that the axis of assembly... | 01/03/1978 |
| 4048505 | Radiography Medical radiographic apparatus is described in which a source of a fan-shaped spread of X-radiation is arranged to project the radiation through a cross-sectional slice of a body under examination. Collimators are used to section up the radiation emergent... | 09/13/1977 |
| 3997794 | Collimator A radiation collimator having a plurality of pivotally mounted collimating tubes, with adjusting mechanism for simultaneously adjusting the tubes relative to each other to various selected positions wherein they are all focused on selected common focal po... | 12/14/1976 |
| 3973127 | X-ray tomography apparatus An X-ray tomography apparatus includes an X-ray tube, a collimator device and a film, which are revolved about an object body of medical examination in the same direction and at the same speed. The collimator device and the film are also rotated about the... | 08/03/1976 |
| 3944836 | Auxiliary collimating device for obtaining irradiation fields of any shape for high energy radiotherapy apparatus An auxiliary collimator is added to the main collimator of a radiotherapy apparatus and comprises a master-container filled with mercury and a localising container containing a block of non absorbent material having a predetermined shape; means being prov... | 03/16/1976 |
