Abstract: An exemplary embodiment includes x-ray apparatus and auxiliary apparatus, such as a sheet film camera or an image intensifier television chain, as well as comprising operating consoles for generator and apparatus control. The operating consoles are intelligent data display apparatus which are connected to a central computer unit which controls the x-ray generator and the x-ray apparatus and which effects the display of data of the x-ray diagnostic system on the data display apparatus. The data display apparatus are provided with a matrix arrangement for the purpose of data input through manual contacting of the display screen at a location corresponding to a desired input.

Abstract: An apparatus, system and method are provided for determining the percentage of fat in a meat sample through the use of X-ray radiation techniques. An automatic calibration feature eliminates the need for manual potentiometer adjustments for accommodating interaction between X-ray attenuation by pairs of calibration standards of known fat percentage values for a given meat species. Protein and moisture percentages may be determined. Indicators for needed periodic recalibration also may be included, and adjustments may be incorporated for meat samples of high, normal or low moisture content, as well as for different species of meat.

Abstract: The invention relates to a device for testing a body which comprises periodic structures. The device includes an image forming device for determining measurement signals representing the periodic structures, and a further electronic device. This electronic device forms the frequency spectrum from neighboring measurement values in the direction of the periodic body structures, suppresses the fundamental and higher harmonics (G,B.sub.1,B.sub.3) of the periodic structures in the relevant spectrum, and retransforms the spectrums thus modified for application to an image evaluation device.

Abstract: An X-ray generator system having control circuitry disposed for applying a selected voltage between cathode and anode electrodes of an X-ray tube and for sending a selected current through the tube during an X-ray exposure, the control circuitry including a voltage indicator network disposed for subtracting from the selected voltage anticipated losses in accordance with the level of selected current to indicate prior to the initiation of the X-ray exposure the actual voltage that will be applied between the cathode and anode electrode during the X-ray exposure.

Abstract: In an exemplary embodiment, two radiation detectors are present which are covered on their inlet sides for the radiation by two x-ray filters of different absorption. A divider divides the two output signals of the radiation detectors so that its output signal is a measure of the time variation of x-ray tube voltage during an exposure. The output signal of the divider is supplied to a time measurement circuit which provides a measure of the exposure time during which the x-ray tube voltage is greater than or equal to a predetermined value.

Abstract: In radiography, a plurality of radiographic films are used for recording radiographic images of an object viewed from the same direction. For instance, a stack of radiographic films stacked together with intensifying screens is exposed to X-rays passing through an object to record the images on the films simultaneously. Alternatively, the plurality of radiographic films are exposed to X-rays passing through the object one by one with the object held still at a position. The images on the plurality of radiographic films are superposed together by electrical signal processing means to obtain an image having averaged density. Then, the gradient of the gradation of the averaged image is enhanced. The radiographic films may be stacked together with self-supporting intensifying screens to reduce the thickness of the stack of the films and intensifying screens when recording the radiographic images.

Abstract: A radiographic cassette comprises a film-receiving plate and a film-keeping plate engageable with the film-receiving plate. The cassette is further provided with an external indicator which enables an operator to visually check whether or not the cassette has been loaded with a film.

Abstract: A field portable X-ray fluorescent spectrometer is described including a multichannel analyzer (2) and a plurality of interchangeable sensor heads (4). Each sensor head includes a shutter (100) which, when open, permits one of several radiation sources (80, 82) to irradiate a material to be analyzed. The returned radiation is detected by a corresponding detector (86, 90), which provides corresponding data in response. This shutter has calibration plaques attached to it so that, when closed, the plaques are exposed to the radiation sources and return radiation having selected energy distributions to the detectors. The multichannel analyzer uses the resulting detector data to calibrate the sensor head. Each sensor head includes circuitry (290) for identifying itself to the multichannel analyzer. The analyzer automatically adapts its operation in accordance with this identification.

Abstract: The present invention relates to a radiation monitoring device which is utilized to measure the voltage supplied to an x-ray generator of an x-ray machine in terms of kVp units. The device includes a pair of detectors which are simultaneously exposed to an x-ray beam. The x-ray beam is filtered by a first amount before being supplied to the first detector, and is filtered by a second amount, greater than the first amount, before being supplied to the second detector. Both detectors generate an output signal having a magnitude proportional to the amount of radiation energy received. The ratio between the detector output signals is proportional to the amount of voltage supplied to the x-ray generator. The output signal of the first detector is an input to a first integrator which generates a voltage ramp output signal as an input to a trigger circuit. The output of the second detector is supplied to a second integrator which generates a second voltage ramp output signal as an input to a sample/hold circuit.

Abstract: In an exemplary embodiment, a timing device sets the fluoroscopy time, and a program setting and display device displays the instantaneous values of the fluoroscopy voltage and current. An arithmetic unit is provided to which signals are supplied which correspond to the fluoroscopy voltage, the fluoroscopy current, and the fluoroscopy time, and which is so designed that it forms the arithmetic mean values of these quantities and brings them to display.

Abstract: In a radiographic image recording system in which a stimulable phosphor plate is exposed to X-rays to record a radiographic latent image therein, the stimulable phosphor plate is exposed to stimulating rays thereafter to emit light according to the stored energy of X-rays, and the emitted light is detected by a photodetector and converted to an image signal to be used for finally recording a visible image on a photosensitive film or the like, a plurality of stimulable phosphor plates are used for recording radiographic images of an object viewed from the same direction. The image signals read out from the plurality of stimulable phosphor plates are superposed to obtain an averaged image signal. The averaged image signal is then subjected to a gradation process for enhancing the contrast of the image.