49 results about "Digital radiography" patented technology

A radiographic imaging system includes a movable tube head, a camera and a movable detector holder. A marker is disposed on the detector holder and a plurality of digital images of the detector holder and the marker are captured by the camera. Each of the digital images are captured at a different relative position as between the camera and the movable detector holder. Spatial coordinates of the camera are determined for each of the plurality of captured digital images and a mathematical best fit function for the spatial coordinates is calculated and stored.

The utility model discloses a universal defect detection capability verification test block for digital radiographic inspection, which comprises a test block body and a thickness correction base plate, and the test block body is abutted against the thickness correction base plate. Test block drill holes and test block notch grooves are formed in the end, away from the thickness correction base plate, of the test block body, the test block notch grooves are formed in the upper surface of the test block body at intervals, the test block drill holes correspond to the test block notch grooves formed at intervals, and digital rays irradiate the test block drill holes and the test block notch grooves; and verifying the minimum detection capability of the digital ray process for circular defects and the minimum detection capability of the digital ray process for strip-shaped defects. The universal defect detection capability verification test block for digital radiographic inspection provided by the utility model has the advantages that the thickness is very small, the influence caused by different workpiece materials is reduced to the greatest extent, the universal defect detection capability verification test block is applicable to the detection capability verification of workpieces with similar density, the internal defects of the workpieces can be simulated, and the reliability of a detection process is further improved.

The application relates to the technical field of nondestructive testing, in particular to a nondestructive testing system based on digital ray CR technology, which comprises a base, the top end of the base is fixedly connected with a socket and a placing seat on the two sides, respectively, an annular slot is formed in one end of the socket, the annular slot and the placing seat are used for placing an inclined pipe and an arc-shaped pipe, a circulating detection mechanism is arranged on the outer side of the inclined pipe corresponding to the top end of the base, and a positioning and clamping mechanism and a cooling mechanism are arranged on the outer side of the placing seat corresponding to the top end of the base, respectively; the circulating detection mechanism comprises L-shaped rods fixedly connected on the two sides of the top end of the base, a special-shaped ring is fixedly connected between the two L-shaped rods, a special-shaped ring column is fixedly connected to the inner wall of the special-shaped ring, and a special-shaped groove is formed in the inner wall of the special-shaped ring column; the detection probe can move around the weld, so that the nondestructive detection operation on the weld can be continuously carried out, manual operation is not needed, and therefore the detection efficiency can be improved.

The utility model discloses a rotary stand column structure capable of being switched between manual operation and electric operation in a mobile DR (digital radiography), which comprises a rotary disc, the rotary disc is rotatably mounted on a chassis, a vertically arranged stand column is mounted on the rotary disc, and the rotary stand column structure is characterized by further comprising a gear motor with a clutch function, a support frame is arranged on the chassis, and the support frame is connected with the rotary disc. The gear motor is installed on the supporting frame and can drive the rotating disc to rotate through a transmission assembly, and the base plate is further provided with an adjusting piece used for finely adjusting the position of the supporting frame.

The invention relates to a camellia seed internal defect detection method based on an x-ray digital radiation imaging technology, which comprises the following steps: S1, sample imaging: carrying out digital projective imaging on camellia seeds by adopting table type X-ray scanning equipment, setting the X-ray tube voltage of the equipment to be 50 kV, the current of the equipment to be 5 mA, the gray value range to be-32768 to 32767, the image acquisition resolution to be 0.125 mm, and the X-ray tube voltage of the equipment to be 50 kV and the current of the equipment to be 5 mA; the size of an original image is 888 * 1096 pixels, the image format is JPG, each camellia seed sample is imaged once, and a two-dimensional transmission image is obtained and used for fully displaying the internal structure of camellia seeds and possible health, wizened, cavity or worm damage defects; according to the method, the high-resolution transmission image of the camellia oleifera seeds is obtained by adopting the X-ray digital radiation imaging technology, and the internal structure and tiny defect information of the camellia oleifera seeds can be completely displayed, including multiple defect types such as wizened, cavity and worm damage.

The utility model discloses X-ray imaging equipment in an oral cavity. The X-ray imaging equipment comprises DR (Digital Radiography) equipment, the movable clamp is used for clamping the DR equipment; the DR device is connected with a wireless handle or the DR device is connected with an external image device through a cable. Compared with the prior art that only a wired mode or a wireless mode can be used singly, the DR equipment installed on the movable clamp can be selectively combined with an external wireless handle or a wired cable, wireless and wired rapid switching can be achieved, use is more convenient, and the DR equipment can be used in a wired mode or a wireless mode independently. And meanwhile, the DR equipment does not need to be purchased additionally, so that the cost investment can be reduced.

The utility model discloses a CT / DR (Computed Tomography / Digital Radiography) two-in-one spectrum detection system applied to ore classification and identification. Comprising a containing box used for containing a detector, a movable platform used for containing ore and an X-ray light source. The detector and the X-ray light source respectively correspond to the ore on the movable platform; by combining the advantages of the CT technology and the DR technology, spectral information of the ore can be obtained more comprehensively; the X-ray light source is accurately positioned through the infrared laser set, it is ensured that the light path center of the X-ray light source can accurately irradiate the ore, and the measurement accuracy and stability are improved.

A method for analyzing DR images and an electronic device, the method comprising: obtaining a digital radiography (DR) image, wherein the DR image includes at least one of a DR original image and an image obtained after processing the DR original image; extracting image features from the DR image, the image features including at least one of a gray entropy feature, a texture feature, a noise feature, a gradient feature, and a divergence feature; inputting at least one of the gray entropy feature, the texture feature, the noise feature, the gradient feature, and the divergence feature into a target model, and outputting a DR image index reflecting the basic feature information content of the DR image. The present application obtains a DR image index that can objectively reflect the basic feature information content of the DR image from the image features extracted from the DR image, thereby providing an objective basis for image judgment for the operator.

An exposure control method of a DR imaging system and the DR imaging system, the method comprising: emitting an X-ray to a target portion of a target object, allowing the X-ray to pass through the target portion; receiving the X-rays passing through the target part, and generating digital radiography (DR) image data according to the X-rays passing through the target part; reading DR image data according to a preset time interval; determining an accumulated DR feature index of DR image data read from the beginning of exposure, the DR feature index being determined according to at least one image feature of a gray scale entropy feature, a texture feature, a noise feature, a gradient feature and a divergence feature extracted from the DR image data; and when the accumulated DR characteristic index reaches the target DR characteristic index, controlling the DR imaging system to stop exposure. The stop time of exposure is determined according to the DR characteristic index, and automatic exposure control can be realized by replacing an ionization chamber.

1. The name of the design product: double column digital photography X-ray machine. 2. The use of the design product: for human medical imaging, specifically for radiographic examination of the head, chest, abdomen, pelvic cavity, leg and other parts of the human body. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combined state reference drawing. 5. Other components that need to be explained: component 1 is the flat end of the X-ray machine; component 2 is the ball tube end of the X-ray machine; component 3 is the detection platform.

The utility model discloses a stand column rotation limiting structure of a movable DR, a stand column is connected with an outer ring of a rotation supporting bearing, an inner ring of the rotation supporting bearing is fixed on a chassis, the stand column rotation limiting structure is characterized by comprising a limiting ring, a limiting pin and a limiting screw, the limiting ring is rotatably arranged between the rotation supporting bearing and the chassis, and the limiting pin is arranged on the limiting ring. The limiting ring is provided with a limiting part protruding outwards, the limiting pin is installed on an outer ring of the rotary supporting bearing, the limiting screw is installed on the chassis, and the limiting pin and the limiting screw can abut against the limiting part.

The utility model relates to the technical field of DR (Digital Radiography) system bulb tube upright posts, in particular to an anti-wire-twisting clockwise and anticlockwise 360-degree rotating device for a DR system bulb tube upright post, which comprises a sliding seat arranged on the bulb tube upright post, a connecting seat arranged on the front side surface of the sliding seat and used for connecting a telescopic cylinder, and a baffle arranged on one surface of the connecting seat contacted with the telescopic cylinder, one side of the telescopic cylinder is connected with a bulb tube; an inner cylinder is arranged on the side, facing the telescopic cylinder, of the bulb tube, an insertion hole used for insertion of the inner cylinder is formed in the telescopic cylinder, a rotating groove is formed in the insertion hole, a moving groove is formed in the insertion hole, a protrusion used for being clamped in the moving groove to slide is arranged at one end of the inner cylinder, and a positioning pin is arranged at the other end, close to the bulb tube, of the inner cylinder. According to the utility model, through the arrangement of the rotating groove, the cable cannot be twisted, the safe use of the cable can be ensured, the bulb tube can completely rotate by 360 degrees, the original position of the bulb tube is always kept unchanged no matter how the bulb tube rotates, and the bulb tube can be accurately aligned with a digital flat panel.

A digital radiography system and a digital radiography method. The digital radiography system includes: detectors (L) mounted on a plurality of detector arm supports (L1, L2) formed in a first plane (P); and a ray source (S) that is non-coplanar with the first plane (P). The digital radiography system further includes an image processing apparatus (10).

Disclosed is a multifunctional mobile digital radiography (DR) device. The multifunctional mobile DR device includes a rack, an X-ray detector, an image processor, a display, a handrail provided on the rack and a cleaning mechanism. The cleaning mechanism includes a guide assembly, a moving collar assembly and a first ultraviolet sterilization assembly. The guide assembly is adjacent to the handrail and extends from one end of the handrail to the other end of the handrail. The moving collar assembly is provided on the guide assembly and sleeved outside the handrail. The first ultraviolet sterilization assembly is provided on the moving collar assembly and configured to emit ultraviolet light and irradiate a peripheral of the handrail. The guide assembly is configured to guide the moving collar assembly and the moving collar assembly is configured to reciprocate between two ends of the handrail.

Disclosed is a portable three-dimensional DR system. The portable three-dimensional DR system includes a support mechanism, an X-ray generator, a stand and a flat panel detector. The support mechanism includes a support tube, a transmission component, a drive component and a support pole slidingly provided in the support tube. The X-ray generator is detachably provided on the support pole, the transmission component is used for driving the X-ray generator to move in the direction of closing to or far from the support tube, the drive component is used for driving the X-ray generator to rotate, the flat panel detector is provided on the stand, and the stand is placed on a horizontal plane.

A flexible digital radiography detector assembly includes a flexible sleeve enclosing an array of photosensors supported by a flexible substrate. Integrated circuit readout electronics are coupled to the array of photosensors and to a circuit board having conductive contacts. The contacts engage a handheld readout electronics cartridge to initiate reading of image data captured in the array of photosensors and to display the image data on a screen in the readout electronics cartridge.

The invention relates to the technical field of welding seam detection, in particular to a nuclear power plant pipeline welding seam quality detection method, device and equipment and a storage medium. A welding seam area image of a pipeline welding seam area of a nuclear power plant is obtained through negative film digitization or digital rays, and the collected welding seam area image is preprocessed; and finally, the defect category of the weld seam image is automatically identified through the trained weld seam defect detection model, and the weld seam quality detection efficiency of the nuclear power station pipeline is improved.

The utility model discloses a DR (Digital Radiography) shooting protection device, which belongs to the technical field of medical imaging and aims to solve the problem that the existing light bundling device cannot accurately protect a patient, the DR shooting protection device comprises a mounting frame arranged on a window of a DR light source part, and a plurality of telescopic blocking mechanisms are arranged on the mounting frame. And when the telescopic blocking mechanism stretches out and draws back, the projection area for blocking the middle vacancy of the mounting frame can be changed. The device can form shielding areas with different shapes according to different shapes of examination parts of a patient, can protect the body parts of the patient except the examination areas, and reduces the examination risk of the patient to the maximum extent.

The invention relates to a method and a system for adjusting a light field of a light bundling device, and a digital X-ray camera, and relates to the technical field. The method for adjusting the light field of the light bundling device comprises the following steps of: determining a first size of a pixel point in a subject image in the horizontal direction and a second size of the pixel point in the vertical direction, wherein the first size and the second size of the pixel point in the subject image are obtained when a camera mounted on the light bundling device shoots a subject under the condition that the light field size of the light bundling device is set; setting a set frame in the subject image, and determining a boundary pixel position corresponding to the set frame according to a first width and a first height of the subject image, the first size, the second size, and a second width and a second height corresponding to the set frame; and based on the first size, the second size and the boundary pixel position, adjusting the set light field size of the light bundling device. According to the embodiment of the invention, the adjustment of the light field of the light bundling device can be realized.

The invention relates to a digital ray detection device for a pipeline and a detection method thereof.The detection device comprises a crawler main body, a ray machine head and a visual positioning module are arranged at the front end of the crawler main body, a flexible imaging plate assembly is arranged outside the pipeline, and the flexible imaging plate assembly is provided with an imaging driving motor; the flexible imaging plate assembly can rotate in the circumferential direction of the outer wall of the pipeline and collect all-round transillumination images of the pipeline, and a control and data processing unit connected with the crawler body and the flexible imaging plate assembly is arranged outside the pipeline. In implementation, the crawler main body can be used for travelling in small and medium-sized pipe fittings, and the crawler main body structure can be bent, so that the crawler can pass through a 90-degree elbow without obstruction, and is suitable for a complex pipeline structure. The visual positioning module arranged at the front end of the crawl device body can automatically recognize and track a welding seam, the ray mechanism carries out full exposure on the interior of a pipe fitting, full-circumference transillumination of the welding seam is achieved in combination with rotation of the flexible imaging plate assembly, and the detection efficiency and the detection precision are effectively improved.

The invention discloses a plane CT (computed tomography) and DR (digital radiography) detection platform, and aims to provide a plane CT and DR detection platform which is simple in structure, accurate in positioning, capable of simultaneously realizing CT and DR detection and simple in online and offline mode remodeling. The device comprises a machine table, a movable carrying table module and a three-axis detection assembly, the three-axis detection assembly comprises a three-axis movable module and a detection module, the three-axis movable module is arranged at the upper end of the machine table, the detection module is connected with the movable end of the three-axis movable module, the movable carrying table module is arranged on one side of the machine table, and the three-axis movable module is connected with the movable end of the three-axis movable module. And the three-axis moving module drives the detection module to be matched with a product on the moving carrier module. The method is applied to the technical field of product detection.

The embodiment of the invention discloses a composite image accuracy verification method and device, a composite image modeling method and device, a digital radiography system and a storage medium. The method comprises the following steps: acquiring a composite image of an imaging target, wherein the composite image is formed by splicing digital ray images of different parts of the imaging target; inputting the composite image into a pre-trained accuracy verification model of the composite image for calculation; a verification result output by the model is obtained, and the verification result comprises whether the synthesized image is accurate or not and redundant or / and missing content identification when the synthesized image is not accurate. According to the embodiment of the invention, the accuracy of the synthesized image is automatically and quickly verified.

The utility model discloses a telescopic stand column balancing system of a movable DR, which comprises a tension spring and a pulley block arranged at the upper end of the tension spring, and is characterized by further comprising an adjusting screw rod, a lower connecting seat and a guide column, one end of the adjusting screw rod is movably connected with the stand column fixing part, the other end of the adjusting screw rod is rotatably connected with the lower connecting seat, the adjusting screw rod is vertically arranged, the adjusting screw rod is further in threaded connection with a locking nut, and the locking nut can abut against the stand column fixing part.

The utility model discloses a special double-stand-column vehicle-mounted DR (digital radiography) system for a physical examination vehicle, which relates to the technical field of radiodiagnosis equipment and comprises a carriage bottom plate, a bulb tube stand column, a chest radiography stand column, a third guide rail and a fourth guide rail, a first groove is formed in the upper end of the carriage bottom plate, and a second groove is formed in the right side direction of the first groove. Wherein the second groove is formed in the compartment bottom plate, rubber layers are arranged on the inner walls of the first groove and the second groove, a reciprocating motor is arranged on the left side of the first groove and fixedly installed on the compartment bottom plate, and the power output end of the reciprocating motor is fixedly connected with a rotating shaft. The rotating shaft can drive the bulb tube stand column and the chest radiography stand column to rotate into the first groove and the second groove, the rubber layer can reduce impact on the bulb tube stand column and the chest radiography stand column, in addition, the bulb tube stand column and the chest radiography stand column rotate into the first groove and the second groove, the occupied space of a carriage can be reduced, and the possibility of being collided can be reduced.

The invention relates to the field of digital X-ray photography, and provides a flat panel detector positioning collimation method which comprises the following steps: acquiring attitude information D (alpha, beta, gamma) of a flat panel detector carrier through an attitude sensor arranged in the flat panel detector carrier, and feeding back the attitude information D (alpha, beta, gamma) to a beam limiting device collimation unit; the method comprises the following steps: when a beam limiting device provided with a collimation unit is positioned above a measured object and a light field is opened, acquiring attitude information S (alpha, beta, gamma) of the beam limiting device through the collimation unit of the beam limiting device; according to the attitude information D (alpha, beta, gamma) of the flat panel detector carrier and the attitude information S (alpha, beta, gamma) of the beam limiting device, an operator is guided to adjust the attitude of the beam limiting device until S (alpha, beta, gamma) = D (alpha, beta, gamma), so that the light field of the beam limiting device is perpendicular to the plane of the flat panel detector carrier; the beam limiting device collimation unit sends a ranging signal to the flat panel detector carrier; and dynamically selecting and executing a corresponding target position calculation and beam limiting device position adjustment strategy based on the effective and visible distance measuring sensor in the sensor set and the received distance measuring signal, so that the position of the beam limiting device approaches to a set target point So.

An analysis method and a DR imaging device for DR imaging, the method comprising: acquiring a digital radiography DR image of a target object by the DR imaging device, the DR image comprising at least one of a DR original image and an image processed from the DR original image; extracting an image feature from the DR image; acquiring a device parameter feature according to a device parameter of the DR imaging device, and / or acquiring an object parameter feature according to an object parameter of the target object; determining a DR feature index according to the image feature, and the device parameter feature and / or the object parameter feature, the DR feature index being used to represent a comprehensive level between a radiation dose of X-ray suffered by the target object and an image quality of the DR image. According to the image feature and the parameter feature of the DR image, the DR feature index which can objectively represent the comprehensive level between the radiation dose of X-ray suffered by the target object and the image quality of the DR image is obtained, so as to provide an objective judgment basis for an operator.

The utility model discloses a suspension supporting arm of a suspension digital photography X-ray machine, which comprises a mounting plate, a multi-stage electric telescopic rod mounted at the bottom of the mounting plate, an X-ray machine head mounted at the bottom of the multi-stage electric telescopic rod, and a side plate mounted on the outer wall of one side of the X-ray machine head, and a rotating column is rotationally mounted on the outer wall of one side of the side plate. According to the suspension supporting arm of the suspension digital photography X-ray machine, when a patient with the injured feet needs to shoot X-rays on the feet or shanks, the patient can directly put the feet on an image plate for X-ray shooting, more convenience is brought to the patient, the shanks of the patient can be put on the bearing assembly in the shooting process, and the patient feels more comfortable; when the feet do not need to be shot, the worm gear can be driven to rotate through the driving assembly, then the rotating column is driven to rotate, the fixing plate is driven to move upwards to be stored, and shooting of other positions by the X-ray machine head is not affected.

The utility model belongs to the field of DR (Digital Radiography) machine shooting, and provides a vertical DR machine radiation protection device which comprises an adjusting frame, and the adjusting frame comprises two first transverse rods connected through a first vertical rod; the mounting frame comprises a second vertical rod and second transverse rods connected to the two ends of the second vertical rod respectively; first lead cloth and second lead cloth are respectively mounted on the two second cross rods; by arranging the adjusting frame, the protection device can be fixed on the U arm of the DR machine, so that the protection device and the DR machine can move up and down together, the irradiation range can be ensured not to exceed the size of an IP plate all the time in the irradiation process no matter how the height position of a patient changes, redundant irradiation can be effectively isolated, and the irradiation efficiency is improved. Compared with the prior art that the protection device is independently used and cannot be adjusted along with the adjustment of the U arm of the DR machine, the efficiency is higher.

This utility model relates to the field of X-ray machine technology, and in particular to an unlocking device for a digital X-ray imaging machine. It includes a signal triggering component, which comprises a handle. The inner sidewall of the handle has a mounting groove, within which a signal triggering plate is detachably mounted. The signal triggering plate has a first curved surface on its side facing the outer peripheral wall of the handle. Curved blocks are symmetrically connected to both ends of the signal triggering plate. The outer sidewall of each curved block includes a fourth curved surface connected to the outer peripheral wall of the handle, a fifth curved surface tangent to the outer peripheral wall of the handle, and an edge formed at the junction of the fourth and fifth curved surfaces. In this utility model, the fourth curved surface of the curved block forms a protruding structure, and the first curved surface of the signal triggering plate also forms a protruding structure. A finger must precisely press the area of ​​either the first or fourth curved surface to trigger the signal, thus narrowing the effective contact area to a specific region and preventing accidental activation due to hand or clothing contact.

This utility model belongs to the technical field of comparative test blocks and discloses a comparative test block for digital radiography (DR) pipe thickness measurement. It includes a magnetic block with a straight rod connected to its center. A stepped test block is installed in the middle of the straight rod, and a round bar is fixedly installed at the end of the straight rod. Based on the current availability of only one set of data to ensure the authority of the final data used, this method allows for the simultaneous acquisition of data from both the direct measurement method using a round bar and the experimental comparison method using a stepped test block in a single installation. The two sets of data are compared and verified, making the data more authoritative.