70 results about "Conventional X-Ray" patented technology

A method of operating a remote medical navigation system using ultrasound, employs ultrasound imaging from a medical device to supplement or to replace conventional x-ray imaging of the operating region during navigation.

A method of operating a remote medical navigation system using ultrasound, employs ultrasound imaging from a medical device to supplement or to replace conventional x-ray imaging of the operating region during navigation.

Electronic displays are provided which can reproduce image data with high contrast ratios and a gray scale range comparable to conventional X-ray film viewed on a light box. One such display includes a rear low-resolution LCD or DLP display which projects an image onto a high-resolution LCD display. In such embodiments, the mechanical and optical registration between the two displays is not critical. Therefore, modulation transfer function and distortion of the projection optics are not critical. Accordingly, the brightness of the inventive display can be maximized with high power lamps and high aperture projection optics. Because the display has a high dynamic range, the need for dynamic range compression algorithms is reduced.

A digital Laminographic or Tomosynthesis method is described for use in the detection of explosives concealed in baggage. The method uses at least one source of x-ray and at least two sets of detectors, preferably more to generate 3D images of high detail. The data from the detectors can be simply time delayed and summed up to generate high definition image of layers through the bag. This leads to very high speed of 3D imaging, the same speed as in regular x-ray scanners. In addition, there is no rotating gantry, the systems is simple, compact, relatively inexpensive, and can be used to generate 3D images of large shipping containers.

We disclose targets for generating x-rays using electron beams, along with their method of fabrication. The targets comprise a number of microstructures fabricated from an x-ray target material arranged in close thermal contact with a substrate such that the heat is more efficiently drawn out of the x-ray target material. This in turn allows irradiation of the x-ray generating substance with higher electron density or higher energy electrons, which leads to greater x-ray brightness, without inducing damage or melting.The microstructures may comprise conventional x-ray target materials (such as tungsten) that are patterned at micron-scale dimensions on a thermally conducting substrate, such as diamond. The microstructures may have any number of geometric shapes to best generate x-rays of high brightness and efficiently disperse heat.In some embodiments, the target comprising microstructures may be incorporated into a rotating anode geometry, to enhance x-ray generation in such systems.

A multi-functional dental extra-oral x-ray imaging system includes a conventional x-ray source and manipulator to control the movement of the x-ray source by translating and rotating, a real time multiple frame producing x-ray imaging device and at least two different exposure profile programs, whereas one of such profiles produces a standard panoramic image and a second of such profiles produces an angled or transverse slice to a the panoramic image. A third exposure profile program produces a substantially linear projection of the human skull by combining two linear projections, one for the right and one for the left part of the head. The sensor is a linear direct conversion operating preferably in the frame mode and producing more than 100 fps.

A method and apparatus for high quality, timely medical interpretations of radiological images acquired in one time zone and interpreted and a different time zone. The use of a different time zone allows images acquired at night to be interpreted during regular working daylight hours. The images can include images created by conventional x-ray technology, computed radiography, magnetic resonance imaging (MRI), computed tomography (CT), ultrasound imaging, and nuclear medicine equipment. The invention includes the transmission of these images, the interpretation of these images, and the transmission of the interpretations back to the originating facility. The interpretation is performed on high-resolution workstations and the written report is created either by voice recognition software or dictation and typed transcription.

A multi-functional dental extra-oral x-ray imaging system comprises a conventional x-ray source and manipulator to control the movement of the x-ray source by translating and rotating, a real time multiple frame producing x-ray imaging device and at least two different exposure profile programs, whereas one of such profiles produces a standard panoramic image and a second of such profiles produces an angled or transverse slice to a the panoramic image. A third exposure profile program produces a substantially linear projection of the human skull by combining two linear projections, one for the right and one for the left part of the head. The sensor is a linear direct conversion operating preferably in the frame mode and producing more than 100 fps.

Disclosed are targets for generating x-rays using electron beams and their method of fabrication. They comprise a number of microstructures fabricated from an x-ray target material arranged in close thermal contact with a substrate such that the heat is more efficiently drawn out of the x-ray target material. This allows irradiation of the x-ray generating substance with higher electron density or higher energy electrons, leading to greater x-ray brightness, without inducing damage or melting. The microstructures may comprise conventional x-ray target materials (such as tungsten) that are patterned at micron-scale dimensions on a thermally conducting substrate, such as diamond. The microstructures may have any number of geometric shapes to best generate x-rays of high brightness and efficiently disperse heat. In some embodiments, the target comprising microstructures may be incorporated into a rotating anode geometry, to enhance x-ray generation in such systems.

A biplane X-ray imaging system is provided. The biplane X-ray imaging system has two recording units disposed in different planes. Each of the recording units has an X-ray detector and an X-ray source. The first recording unit is a phase-contrast recording unit for phase-contrast X-ray imaging. The second recording unit is a conventional recording unit for conventional x-ray imaging.

The invention discloses an X-ray image super-dynamic range reconstruction method which is based on decomposition and reconstruction of the scale space, the steps of the method include: two conventional X-ray images of a same imaging object are shot under different imaging conditions, and the two images can respectively display the information of the different regions of interest of the imaging object. The invention is firstly carried out the decomposition of the two images based on the scale space, the reconstruction of the components of decomposition of the two images is done by certain reconstruction rules and an image with the dynamic range expansion is reconstructed on the basis. The method can effectively expand the imaging dynamic range of the small dynamic range X-ray imaging equipment, which has great actual application value.

The invention provides a separated imaging method for superimposed targets based on multi-spectrum X rays. Imaging equipment sequentially comprises an X ray source, an imaging object, an X ray detector, a CCD (Charge Coupled Device), a data analyzing and processing device and terminal output equipment, which are put by an order. First, multiple X ray images are respectively shot for the imaging object in the same field of view through the change of the voltage of the X ray source. The imaging processes of the multiple X ray images are respectively described in combination of an X ray attenuation imaging formula and the gradation of the image so as to establish an X ray attenuation imaging equation set. The X ray attenuation imaging equation set is solved by an independent component analysis technology so as to obtain the attenuation thickness of the superimposed targets. The three-dimensional image of each superimposed target is reconstructed according to the thickness of the superimposed targets, that is, the superimposed targets in the original imaging object are separately imaged. Compared with a conventional X ray imaging method, the method has the advantages that the visual effect of the images is improved, and the medical diagnosis accuracy is improved.

Disclosed are an installation case for a radiation device, an oil-cooling circulation system and an X-ray generator which belong to the technical field of X-ray generator. This disclosure aims to solve the technical problems existing in the conventional X-ray generator, that is, the conventional X-ray generator provides bad sealing, the weight of the case body of the conventional X-ray generator is heavy, and the leakage dose of the X-ray in the conventional X-ray generator is large. The installation case for a radiation device according to this disclosure comprising a case body and a collimator fixedly connected with the case body, the collimator being provided with a beam exit aperture and the case body being provided with a beam exit opening, the installation case for a radiation device further comprises a shielding device provided within the case body, the collimator and the shielding device are integrally formed, or the collimator and the shielding device are two separate parts and are fixedly connected with each other; each layer of the shielding device is provided with a ray exit aperture, and the ray exit aperture, the beam exit aperture and the beam exit opening are coaxial. The X-ray generator according to this disclosure comprises the oil-cooling circulation system according to this disclosure. The installation case for a radiation device according to the disclosure provides improved sealing and ray leakage-proof performance.

A power supply for generating a high output voltage for supplying an X-ray generator system with at least one X-ray source (17), especially for computer tomography (CT) applications is disclosed, wherein the high output voltage comprises at least two different high output voltage levels (U1; U1±U2) which are fast switchable so that spectral CT measurements can be conducted with one conventional X-ray tube (17). Furthermore, an X-ray tube generator system comprising such a power supply and at least one X-ray tube (17), as well as a computer tomography (CT) apparatus comprising such a power supply is disclosed.

A biplane X-ray imaging system is provided. The biplane X-ray imaging system has two recording units disposed in different planes. Each of the recording units has an X-ray detector and an X-ray source. The first recording unit is a phase-contrast recording unit for phase-contrast X-ray imaging. The second recording unit is a conventional recording unit for conventional x-ray imaging.

The invention relates to a method for measuring the residual stress of a pyrolytic carbon coating by virtue of X ray diffraction and solves the problem that no complete technique for measuring the residual stress of the pyrolytic carbon coating by virtue of an X ray diffraction method is issued currently. The method comprises the following specific steps: carrying out conventional X-ray detection on an experimental sample to obtain a full diffraction spectrum, and determining a maximal diffraction angle 2theta of a diffraction peak; setting a scanning starting angle, a scanning end angle, a scanning step, a scanning speed and a counting time, selecting six azimuth angles psi, measuring a crystal face diffraction angle 2thetapsi, corresponding to each azimuth angle psi, of the experimental sample, counting sin<2>psi corresponding to each azimuth angle psi, drawing a 2thetapsi-sin<2>psi dispersing graph, and fitting according to each discrete point so as to obtain a straight slope formula (described in specification); calculating a residual stress value formula (described in specification), wherein E represents elasticity modulus of the experimental sample, v represents Poisson's ratio of the experimental sample, and theta0 is a half-crystal face diffraction angle when the experimental sample is not stressed. According to the method, the residual stress value of the pyrolytic carbon coating can be simply, conveniently and accurately obtained on the premise that the coating is not damaged.

The invention discloses a system and method for single-exposure digital subtraction angiography (DSA) imaging. The system is composed of an x-ray generator, a multi-energy photon counting detector, a DSA image generation unit, a device for image storage and display, a sickbed, a rotary rack and a controller, wherein the x-ray generator can generate continuous energy spectrum x rays; the multi-energy photon counting detector detects x photons which penetrate a human body and can judge and count energy of the x photons respectively; the DSA image generation unit collects output signals of the multi-energy photon counting detector to form data of two transmission images of a high energy zone and a low energy zone; and DSA images are obtained through subtraction computation of the data, and a conventional x-ray image can be obtained through summary computation. The DSA image can be obtained by the system through single exposure, so motion artifacts can be avoided; the contrast medium dosage and the radiation agent dosage can be reduced; equipment efficiency can be increased; more effective approaches can be provided for DSA imaging of dynamic objects; and the system has important values in clinical application.

A multi-functional dental extra-oral x-ray imaging system includes a conventional x-ray source and manipulator to control the movement of the x-ray source by translating and rotating, a real time multiple frame producing x-ray imaging device and at least two different exposure profile programs, whereas one of such profiles produces a standard panoramic image and a second of such profiles produces an angled or transverse slice to a the panoramic image. A third exposure profile program produces a substantially linear projection of the human skull by combining two linear projections, one for the right and one for the left part of the head. The sensor is a linear direct conversion operating preferably in the frame mode and producing more than 100 fps.

The invention discloses an X-ray differential phase contrast microscope system and a two-dimensional imaging method thereof. The X-ray differential phase contrast microscope system comprises a light source, a convergent lens, a center diaphragm, a beam splitting grating, a pin hole, a sample table, an object lens, an annular analysis grating and an imaging detector, wherein the light source is used for generating X rays; the convergent lens, the center diaphragm, the beam splitting grating, the pin hole, the sample table, the object lens, the annular analysis grating and the imaging detector are sequentially arranged in the X-ray spreading direction. The X-ray differential phase contrast microscope system has the beneficial effects that the X-ray differential phase contrast microscope system can realize the phase contrast quantitative imaging only through adding the beam splitting grating and the annular analysis grating in the conventional X-ray microscope; the advantages of simple structure and easy popularization are realized. In addition, the X-ray light source, the convergent lens and the beam splitting grating can be integrated into an X-ray annular grating source element; the length of the whole X-ray phase contrast microscope system can be further reduced; the manufacturing cost of the X-ray microscope system can be reduced; in addition, the light utilization efficiencyis further improved.

The invention relates to a method for measuring residual austenite content in steel. The measuring equipment is mainly an X-ray diffractometer, and the method for measuring the residual austenite content in steel is characterized by comprising the following steps of: (1) preparing block steel material test samples and standard samples, wherein texture is absent in the standard samples, and removing the surface residual stress of the test samples and standard samples; (2) testing; and (3) calculating to obtain the austenite content in the test samples according to the peak intensity and left and right back intensity of the test samples and standard samples measured in the step (2). The method can measure the residual austenite in the steel on the conventional X-ray diffractometer, and the measured result is close to the true value and has low error.

Disclosed are an installation case for a radiation device, an oil-cooling circulation system and an X-ray generator which belong to the technical field of X-ray generator. This disclosure aims to solve the technical problems existing in the conventional X-ray generator, that is, the conventional X-ray generator provides bad sealing, the weight of the case body of the conventional X-ray generator is heavy, and the leakage dose of the X-ray in the conventional X-ray generator is large. The installation case for a radiation device according to this disclosure comprising a case body and a collimator fixedly connected with the case body, the collimator being provided with a beam exit aperture and the case body being provided with a beam exit opening, the installation case for a radiation device further comprises a shielding device provided within the case body, the collimator and the shielding device are integrally formed, or the collimator and the shielding device are two separate parts and are fixedly connected with each other; each layer of the shielding device is provided with a ray exit aperture, and the ray exit aperture, the beam exit aperture and the beam exit opening are coaxial. The X-ray generator according to this disclosure comprises the oil-cooling circulation system according to this disclosure. The installation case for a radiation device according to the disclosure provides improved sealing and ray leakage-proof performance.

The invention provides a portable X-ray flat panel detector with a display function. The flat panel detector comprises a TFT (thin film transistor) light-sensitive panel arranged on the front surface of the flat panel detector, a first structure member positioned on the rear surface of the TFT light-sensitive panel and made from an X-ray absorption material, a circuit board which is positioned on the rear surface of the first structure member and comprises an MCU (micro controller unit) for controlling the whole work process of the flat panel detector and an FPGA for processing image data under the control of the MCU, a liquid crystal display panel arranged on the rear surface of the flat panel detector, and a second structure member positioned between the circuit board and the liquid crystal display panel and used for isolating light rays generated by the liquid crystal display panel. According to the portable X-ray flat panel detector, the image processing and displaying functions of the X-ray flat panel detector and the integration of a display system, a communication control system and the X-ray flat panel detector are achieved by the MCU and the FPGA on the premise that the function of the conventional X-ray flat panel detector is guaranteed, thereby enabling the X-ray flat panel detector to be richer in function and more convenient to use.

An X-ray imaging device is equipped with a solid state detector, for recording image information by being irradiated with X-rays that bear image information and for outputting image signals that represent the recorded image information, and an X-ray dosage detector for detecting the dosage of irradiated X-rays. The X-ray dosage detector is provided between an X-ray source and the solid state detector, thereby enabling accurate measurement of the X-ray dosage, without being influenced by the solid state detector. In addition, the X-ray dosage detector is equipped with a photoconductive layer. Therefore, the X-ray dosage detector can be made thinner than conventional X-ray dosage detectors, which are constituted by a fluorescent plate, a light collecting field, a light transmitting plate, and a light shielding plate. Accordingly, decreases in resolution of images detected by the solid state detector can be prevented.

The invention discloses intelligent, full-automatic and digitized medical X-ray inspection equipment. The intelligent, full-automatic and digitized medical X-ray inspection equipment comprises a frame. One side of the frame is connected with a first movable arm. The other side of the frame is connected with a second movable arm. The second movable arm is connected with an X-ray emitting device. Apatient information collection system is arranged on a flat panel detector. The equipment can control KV value of X-ray exposure and ensure precise control of exposure dose so that more precise imagesare obtained for later-period diagnosis. By inputting inspection information and body data information on patients into a control system, the frame is controlled to automatically operate at the appointed inspection position. Without manual intervention, workload of doctors is reduced so that working efficiency is increased. By equipping a conventional X-ray system with more intelligent data information collection sensors, artificial intelligent technology is combined into the conventional digitalized X-ray system. The overall system does not need manual intervention. The requirement for professional standards of personnel is set lower. The intelligent, full-automatic and digitized medical X-ray inspection equipment is of great economic value and good for quick popularization.

The invention discloses an x ray diffraction data acquisition and process system, which includes a computer, a control circuit, an angle measurer, a detector, a scaler, a signal treating system as well as an X ray window, the computer, the signal processing system, the X ray window, the angle measurer are connected with the control circuit; the detector is arranged on the angle measurer, which is connected with the signal processing system; the scaler is arranged on the angle measurer, which is connected with the control circuit. The control circuit includes a single-chip, which is used on a accounting device for recoding x ray photon numbers and other devices. The x ray diffraction data acquisition and process system provided by the invention uses a stepping motor with high precision, and has fine controllability, high positioning accuracy and the functions of test and analysis of routine x ray diffraction, because the control circuit is added, consequently the real-time microcomputer test controlled by the computer is realized in the system, which improves the work efficiency and the quality.

The purpose of the invention is to provide an X-ray digestive tract image resolution evaluation method based on a human anatomic structure. The X-ray digestive tract image resolution evaluation method comprises the following steps: (1) obtaining an area of interest; (2) carrying out image segmentation based on a threshold value; (3) extracting edges of an anatomic structure; (4) fitting an edge curve; (5) calculating edge smoothness. According to the X-ray digestive tract image resolution evaluation method, the edges of the anatomic structure can be automatically extracted, the smoothness can be automatically calculated and the image resolution evaluation can be quickly finished independent of subjective experience. In comparison with a method of employing a special evaluation model, the X-ray digestive tract image resolution evaluation method does not need to design a processing evaluation model, and the image resolution evaluation can be finished quickly, conveniently and exactly by only using the characteristics of the human anatomic structure. In comparison with a method of designing special low-dose X-ray imaging equipment, the X-ray digestive tract image resolution evaluation method is applied to the conventional X-ray imaging equipment.

The invention discloses an image screening method and device. The method comprises the steps of obtaining a bone image is acquired from a chest X-ray film; carrying out fusion processing on the chestX-ray film and the bone image to obtain a fusion image; inputting the fused image into an image screening model for testing to obtain an image screening result, wherein the image screening model comprises a model determined by deep learning training based on a sample fusion image and an abnormal skeleton tag of the sample fusion image. According to the method, the bone image generated by a similardual-energy subtraction technology can be generated on a conventional X-ray chest radiograph, so that the shielding of soft tissues on bones is greatly reduced, clearer and more detailed focus information is provided, the full-automatic screening of abnormal bone images is realized, and an image screening result with relatively high accuracy is obtained.

Conventional X-ray photographing has several problems for eliminating the influence from the cervical vertebrae such as rework of original images, causing possible loss of useful information, as well as long processing time and the need for a plurality of panoramic images. The X-ray photographic device according to the present invention can eliminate the influence from the cervical vertebrae projected at around the anterior teeth of the panoramic image of a tooth row, without missing the original image information and without influence of different shapes of cervical vertebrae and X-ray permeability by each subject. In addition, as the present invention achieves these through arithmetic processing, there is no need to intensify X-ray output in the section corresponding to the anterior teeth, nor decelerate the rotating speed of arms during photographing, and it is possible to suppress the X-ray dose received by the subject.

The invention relates to a program control X-ray diffractometer which is structurally characterized in that a conventional X-ray generating device and a goniometer are arranged in a shell; the drive shaft of the goniometer is connected with the transmission shaft of a servo motor; the signal output / input end of the servo motor is connected with a program control device; and an amplification board, a high-voltage board, a power board, an isolating board and an S7-200 PLC (Programmable Logic Controller) are arranged in the shell of the program control device wherein the port PORTO of the PLC is connected with a computer. Since the PLC is installed and triplex non-interfering isolating protection is adopted, the performance of the diffractometer is more superior, the fault rate is extremely low, and the service life of the complete machine is prolonged. An integrated motor is adopted as the motor for controlling the goniometer; a high-resolution magnetic encoder can automatically correct a very small movement position error by a high-precision full-closed loop vector drive servo system to ensure the degree of accuracy of the measuring result of the diffractometer. A recording unit realizes man-machine interaction, has complete protection function, and convenient and visualized operation and brings convenience for operators to use and judge fault information and the like. The diffractometer is suitable for the test, analysis and research work of the microscopic structure of matter.

The invention relates to a medical X-ray examination apparatus (1) for performing K-edge imaging. The medical X-ray examination apparatus (1) comprises an imaging unit (21), which is configured to spectrally decompose an X-ray absorption spectrum to image the X-ray absorption spectrum as a conventional X-ray absorption image (23a) and a K-edge absorption image (23b). The conventional X-ray absorption image (23a) includes data elements representing the anatomical background of an object of interest. The K-edge absorption image (23b) includes data elements representing quantitative information of local densities of material showing K-edge absorption within the object of interest. The imaging unit (21) comprises a spatial resolution reducer for reducing the spatial resolution of the K-edge absorption image, so that with a medical X-ray examination apparatus according to the invention an increased sensitivity of the selective imaging of a K-edge absorption image is achieved as compared to the sensitivity of the selective imaging of a K-edge absorption image of a known medical X-ray examination apparatus.