56 results about "Diagnostic x-rays" patented technology

The invention discloses a two-bed duplex tube medical diagnosis X-ray high frequency high voltage generator, which comprises a power supply and a central control unit, and also comprises a high frequency inverter circuit, a pulse-width modulation drive circuit and a high voltage commutation circuit. The generator converts the industrial power supply into two way high frequency high voltage, and then obtains positive end DC high voltage and negative end DC high voltage after the rectification and the filter to supply an X-ray pipet for working. Because the frequency is high and the high voltage ripple after the rectification and the filter is minimum, causing the X-ray pipet of a radiographic table and the X-ray pipet of an electric perspective table to work in turn under the condition of arranging only one set of high voltage supply. The equipment investment is saved, and the work of using the X-ray diagnosis for the medical staff is convenient. Being served as the high voltage supply, the invention is also suitable for the safety detection fields such as the industrial fault detection, the civil aviation, the station, the custom, etc., and supplies the stable high quality high voltage for the equipment.

The invention discloses a medical diagnosis X-ray high frequency high pressure generator, comprising a power supply, a central control unit, a high frequency inverter circuit, a pulse width modulation driving circuit and a high pressure transform and high pressure output circuit. The generator transforms the industrial power to two ways of high frequency and high pressure, a positive direct current high pressure and a negative direct current high pressure are obtained through rectifying and wave-filtering to provide an X-ray ball tube to work. As the frequency is high, the ripple of the rectified and wave-filtered high electric pressure is tiny, and the X-ray quality projected by the X-ray ball tube is high, and the clearance of photos of the perspective and photograph is also high. The X-ray ball tube of a photograph bed or the X-ray ball tube of an electric perspective bed can work if allocated with the high pressure power. The invention is convenient for the medical staff to use the X-ray to do the work of diagnosing diseases. As the high pressure power supply, the invention is also suitable in the safety inspection fields such as industrial flaw detection, civil aviation, station and customs etc, and provides a stable and high qualified high pressure power supply for the equipments.

A radiotherapy apparatus includes an irradiation head section, an X-ray source section and a sensor array section. The irradiation head section irradiates therapeutic radiation to a therapeutic field of a target substance. The X-ray source section irradiates diagnostic X-rays to the therapeutic field of the target subject. The sensor array section detects the diagnostic X-rays which have transmitted the target subject, and outputs diagnostic X-ray image data based on the detected diagnostic X-rays. The sensor array section moves in conjunction with movement of the irradiation head section.

An injector 20 that may be used to deliver radiographic contrast media and/or flushing solution into a patient's vascular system for the purposes such as obtaining enhanced diagnostic x-ray images. The injector includes the following features: (1) a syringe mount 26 for attachment of a syringe 28 to the injector 20; (2) display 34 and controls 90 for volume and flow rates; (3) automatic limiting of the operating pressure of the injector 20 as determined by the selection of a flow rate; (4) a syringe cradle 48 having a warming capability; (5) a purge/retract trigger 36 for control of the injection procedure having intuitive direction (i.e., forward for injecting, reverse for filing), non-contact control transmission through the housing of an injector 20 for an improved seal integrity, a speed lock, and/or the ability to change the concentration and/or flow rate of media or other fluid during an injection procedure; (6) a switch to determine when the drive ram 46 is in a “home” position; (7) a “soft” on/off power switch separate from the injector; and (8) a structure to prevent rotation of the drive ram 46 about its axis of symmetry 76. Additionally, the injector system includes software for the control of various components.

This invention includes apparatus and methods for merging of overlapping two-dimensional (2D) images which are formed by a image pick-up device as projections of a three-dimensional (3D) scene. In particular, the merging includes image registration by projective transformation of one of the 2D images, the transformation being derived from corresponding feature found in both images. In order to achieve improved accuracy and stability, the coordinates of the corresponding feature points are chosen or are translated so that, on average, the numerical ranges of coordinate values are minimized. Apparatus of the invention includes an appropriately configured image processor or computer with an attached image acquisition device, which in one embodiment, is a diagnostic x-ray apparatus.

A region affected by X-ray beam limiting within a fluoroscopic image is specified based on position information on beam limiting by an X-ray beam limiting device. A judgment is made as to whether the region affected superposes a first brightness measuring region (region of interest) within the X-ray fluoroscopic image, and when superposition is not judged, automatic brightness control is performed based on the first brightness measuring region. When superposition is judged, the first brightness measuring region is transformed, and automatic brightness control is performed with reference to a second automatic brightness measuring region that does not superpose the region affected.

The invention relates to an X-ray doser, in particular to a doser used for measuring and diagnosing quality of an X-ray machine and a measuring method. The doser comprises a semiconductor detector array (1), a preposition current amplifier (2), channel switch modules (3), adjustable gain amplifiers (4), analog-to-digital converters (5), a measuring trigger circuit (6), a single chip microcomputer controller (7), a power supply circuit (8) and a bluetooth wireless transmission module. Through the integration of various parameter measuring functions, the doser and the measuring method realize that tube voltage, exposure time, dose, dose rate and half-value layer of the X-ray can be measured and diagnosed; a plurality of parameter measurement results of the X-ray can be obtained at the same time through only one time of exposure; the high-power Bluetooth wireless transmission technology is adopted and the transmitted measurement data is processed through a laptop, so that remote control and real-time measurement can be realized and unnecessary irradiation dose can be avoided, as a result, the measurement process is convenient and quick to operate.

An examination program is selected based on an input of an examination method or a region to be inspected on the side of an diagnostic X-ray system, and contrast conditions suitable for contrast examination which is realized by the selected examination protocol are transmitted to a contrast medium injector through a network or the like. The contrast medium injector receives the transmitted contrast conditions and performs control regarding contrast medium dosage based on the contrast conditions.

A diagnostic X-ray system includes an imaging system that generates image data sets from shots by subjecting a patient to X-ray exposure, a supporting mechanism that supports the imaging system movably with respect to the patient, a system controller that controls the imaging system and the supporting mechanism in such a manner that shots are repeated at each of a plurality of shot positions set discretely along the body axis of the patient, and an image processing apparatus that generates another image data set covering a range wider than the field of view of the imaging system from the image data sets.

The invention discloses an X-ray beam filtering device, a beam limiter and a medical diagnosis X-ray apparatus. The X-ray beam filtering device comprises a power source, a first linear transmission device, a second linear transmission device, a linkage device, a first filtering sheet and a second filtering sheet, wherein the power source drives the first linear transmission device to move; the first linear transmission device drives the first filtering sheet as well as the linkage device; the linkage device is connected with the second linear transmission device; the second linear transmission device drives the second filtering sheet; and the linkage device has a load travel driving the second linear transmission device to move and a no-load travel free from drive. By controlling the first and second filtering sheets to change between the position in an X-ray beam range and the position outside an X-ray range, the filtering combinations with different filtering thickness can be realized and can not only filter unnecessary radioactive rays in the X-ray beam, but also can meet different filtering requirements as well as different using requirements of medical workers to a relatively large degree.

The invention relates to a high-frequency digital medical diagnostic X-ray unit and belongs to the technical field of medical instruments. The high-frequency digital medical diagnostic X-ray unit comprises a master unit console, an X-ray machine, a remote control camera and a data receiver; a display is disposed above the master unit console; a display support plate is disposed below the display; a display table is disposed below the display support plate; a holding table is disposed below the display table; a rubber membrane is disposed above the holding table; a keyboard is disposed above the rubber membrane; a mouse pad is disposed on the right of the keyboard; a mouse is disposed above the mouse pad; a main box is connected to the rear of the holding table; a film discharger is arranged in the front of the main box; the front of the film discharger is provided with a film exit; a master unit fixing box is arranged below the film discharger. The high-frequency digital medical diagnostic X-ray unit has complete functions, is convenient to use, allows less time and labor to be consumed in X-ray examination safely and efficiently and allows work to be easier for medical staff.

A heat exchanger system for a single-tank x-ray generator of an x-ray diagnostic device with a rotating anode tube with a glass jacket is provided. The system provides for the thermal radiation emitted by the anode plate of the rotating anode tube, which glows during load operation, to be absorbed in very close proximity to the tube by a heat exchanger with a window for the exiting x-ray radiation beam, without causing other components inside the generator tank to be heated by the thermal radiation. The heat exchanger preferably includes the lead shield required to shield against x-ray back-radiation and has a cooling agent flowing through it. The layer of insulating oil present in the space between the rotating anode tube and the heat exchanger is exchanged by means of a pump against insulating oil from other areas of the tank so as to prevent local overheating of the insulating oil in the gap.

The present invention provides a novel paramagnetic metal-phthalocyanine complexes and pharmaceutically acceptable salts thereof, which are useful as contrast agents for MRI(Magnetic Resonance Imaging), diagnostic X-ray imaging and computed tomography(CT).

The present invention also provides contrast agents for imaging, comprising the new paramagnetic metal-phthalocyanine complexes. The new contrast agents of the present invention show high imaging enhancement effects at lower concentration and are safer than the previously reported contrast agents.

In a device for exposure field monitoring of a therapeutic radiation exposure field with diagnostic x-ray image quality with the same or nearly the same projection as in therapeutic radiation, the focal spot from which the diagnostic radiation emanates is designed to cause the diagnostic radiation to penetrate the patient in the same or nearly the same projection as the therapeutic radiation located at the target of the radiation therapy apparatus or in close proximity thereto.

An auto grid moving apparatus for an X ray imaging device is provided. The apparatus includes: a grid; a grid holder on which the grid is disposed; a fixing base; and a double sided timing belt geared with at least two timing wheels at the two ends of the timing belt on the inner side face of the timing belt and geared with the grid holder at the outer side face of the timing belt, wherein one of the timing wheels has a motor disposed thereon, the motor being configured to drive the timing wheel to move the timing belt and to drive the grid holder to move.

The invention relates to a drive unit (12) for vertical or horizontal movement of a component (7) of a diagnostic X-ray device (1), comprising a motor and gear unit (14), a pulley (10) mounted on a drive shaft (13) of the motor and gear unit (14), and traction means (9), e.g. a rope or a drive belt, wound around the pulley (10), the component (7) to be moved being either attached to the traction means (9) or connected with the drive unit (12). In order to provide a drive unit (12) enabling collision detection, emergency stop functionality, and improved handling with regard to control of the motion of the component (7) by an operator of the X-ray device (1), the invention proposes that the motor and gear unit (14) is rotatable about the axis of the drive shaft (13) against the elastic force of a balancing spring (15), wherein provision is made for a rotation sensor (17,24), which rotation sensor (17,24) is adapted for detecting a rotation of the motor and gear unit (14) and for generating a corresponding rotation detection signal.