39results about How to "Reduce radiation exposure" patented technology

The invention provides a compound DOTA-HX2-DZ and application thereof, and belongs to the technical field of biological medicine. According to the invention, the molecular structure of DZ-HX2-DOTA is optimized, and a special connexon is designed and adopted, so that the problem of limited anti-tumor curative effect caused by poorer stability, fat solubility, tumor residence time and other properties of a radiolabeled drug in the prior art is solved. The compound provided by the invention can significantly reduce the risk of label removal of radioactive metal ions in an in-vivo environment, and ensures that the compound stably plays a role at a targeted part; the compound has excellent molecular lipid solubility, can penetrate cell membranes and vascular barriers more easily, improves the bioavailability of drugs, prolongs the in-vivo circulation time, prolongs the tumor residence time, and further improves the treatment efficiency. The DZ-HX2-DOTA disclosed by the invention has broad-spectrum tumor targeting property, and can be used for diagnosing and treating various types of malignant tumors.

The invention discloses a sacroiliac joint synthetic CT examination technology and system, and belongs to the technical field of medical image processing, and the technology comprises the steps: data input: employing an MRI image of an axial 3DT1 MGE sequence as input data, and guaranteeing that the image quality meets the subsequent processing requirements; in the deep learning model, a deep learning neural network model is designed and trained, the model can automatically learn the mapping relation between the MRI image and the CT image, and the MRI image is converted into a CT-like image with similar CT characteristics; image processing and optimization: through image enhancement, denoising and edge detection algorithms, the quality of the generated CT-like image is further optimized, and it is ensured that the CT-like image has high resolution and accuracy when displaying erosion, hardening and ankylosing lesions. The sacroiliac joint synthetic CT examination technology and the system thereof are a promising imaging evaluation method, the advantages of MRI and CT are combined, the diagnosis accuracy of sacroiliac joint lesions is improved, and meanwhile the risk that a patient receives radiation is reduced.

The invention discloses a universal medical image auxiliary diagnosis system which comprises an ultra-low radioactivity imaging module which adopts a 3D CycleGAN network as a basic skeleton for PET image reconstruction; the epilepsy focus positioning analysis module is based on a self-adaptive medical image segmentation framework in deep learning; the user interface is used for providing a graphical operation interface and supporting multiple interaction modes so as to meet using habits of different doctors; and the data storage and management module is responsible for storage, backup and management of all medical image data and related information in the system, has data retrieval and query functions, and supports remote access and sharing. According to the universal medical image auxiliary diagnosis system, radiation exposure of a patient can be remarkably reduced, the accuracy and reliability of focus positioning can be improved, and powerful technical support is provided for diagnosis and treatment of nervous system diseases such as epilepsy.

The invention discloses a method for synthesizing a CTPA blood vessel image based on a plain-scan CT image, and the method comprises the steps: carrying out the registration and preprocessing of the plain-scan CT image and the CTPA image, taking three continuous plain-scan CT slice images at a selected depth as samples, taking three continuous CTPA slice images at corresponding positions in the CTPA image as labels, and carrying out the recognition of the CTPA blood vessel image. Determining a blood vessel tissue area of the label and the edge of the enhanced blood vessel; a U-Net model is constructed; constructing a loss function loss; training the U-Net model based on the sample; and sequentially taking three plain-scan CT slice images from a plain-scan CT image to be predicted according to the depth, and inputting the three plain-scan CT slice images into the trained U-Net model to obtain a predicted CTPA image. According to the method, the image effect similar to CTPA is simulated or reconstructed through the non-enhanced plain-scan CT image. This method has reduced patient radiation exposure, shortened examination time, and possibly reduced examination costs.

The present invention provides a compound DOTA-HX2-DZ and its application, belonging to the field of biomedical technology. The present invention optimizes the molecular structure of DZ-HX2-DOTA, designs and adopts a special linker, and solves the problem of limited anti-tumor efficacy caused by the poor performance of radiolabeled drugs in the prior art, such as stability, lipid solubility and tumor retention time. The compound of the present invention can significantly reduce the risk of delabeling of radioactive metal ions in the in vivo environment, ensuring that it can stably play a role in the targeted site; the molecule has excellent lipid solubility and can more easily penetrate the cell membrane and vascular barrier, thereby improving the bioavailability of the drug, prolonging the in vivo circulation time, and prolonging the tumor retention time, thereby improving the treatment efficiency. The DZ-HX2-DOTA of the present invention has a broad spectrum of tumor targeting, and can be used for diagnosis and treatment of various types of malignant tumors.

This invention belongs to the field of medical signal processing technology, specifically a method and prediction system for constructing a three-dimensional tumor motion trajectory prediction model. It involves collecting temporal data of point clouds from the human chest and abdomen, as well as temporal location information of the tumor, and establishing a unified spatial coordinate system. The temporal data of the point clouds are divided into n time periods of total duration T1, and the temporal location information of the tumor is divided into n time periods of total duration T2, resulting in n training samples. The point clouds of the training samples are further divided into several pseudo-voxel sub-blocks according to the human projection plane, and K pseudo-voxel sub-blocks are selected based on motion saliency to obtain the temporal feature vector of the tumor motion. The temporal feature vector of the tumor three-dimensional motion trajectory prediction is used as input, and the corresponding tumor temporal location information is used as output to train an attention-enhanced dilated convolutional prediction network. This invention enables high-precision, non-invasive prediction of the three-dimensional tumor motion trajectory.

The invention discloses a pulmonary nodule real-time positioning method and a pulmonary nodule real-time positioning device based on artificial intelligence multi-modal image fusion technology applied to a sub-pulmonary lobe resection operation, which are applied to the technical field of data processing, a three-dimensional collapsed lung model is generated by acquiring a lung medical image and a three-dimensional model in combination with operation parameters, and features of the three-dimensional collapsed lung model are automatically identified. Endoscope dynamic images are collected in real time in an operation, and the three-dimensional collapse lung model is finely adjusted after image features are extracted, so that the three-dimensional collapse lung model is accurately matched with an actual lung tissue form in the operation. By means of the artificial intelligence multi-mode image fusion technology, the endoscope image and the three-dimensional model are deeply fused, and the lung three-dimensional structure and the accurate pulmonary nodule position under the endoscope view field are presented in real time. By integrating artificial intelligence, computer vision, a collapse algorithm and a multi-modal image fusion technology, a doctor is assisted to clearly identify lung tissue and nodule positions in an operation, the accuracy of the operation is effectively improved, the operation time is shortened, and the operation is safely completed with high quality.

The present invention belongs to the technical field of internal contamination of valve chambers, and specifically relates to an automatic device and method for removing radioactive contamination from valve chambers, including a movable trolley, a filter, a fluid transmission pump, a mechanical arm, and a connecting pipe. The device and method can replace manual work to automatically remove radioactive substances deposited inside the valve chamber, residual radioactive liquid, and metal particles generated by grinding, thereby reducing the risk of radiation exposure and contamination of personnel, improving the decontamination effect, reducing the radiation source items of the unit, reducing the amount of radioactive waste generated, and improving on-site work efficiency.

The invention discloses an electrical stimulation lead implantation device and method, and relates to the technical field of medical equipment. The device comprises a control unit, a bendable unit and an angle adjusting unit. In the invention, a puncture technology referring to a spinal cord electrical stimulation lead implantation technology is combined with visual and bendable catheterization technologies of a fiber bronchoscope and a spine endoscope, and after a percutaneous puncture needle punctures through a vertebral plate gap to reach an epidural posterior gap, the percutaneous puncture needle enters through a puncture-assisted bendable fiber catheter; firstly, the bendable fiber catheter is placed in an epidural target position by utilizing the visual and bendable characteristics, then an electrode lead (a puncture electrode and a surgical electrode) is implanted in the position through the bendable fiber catheter, the bendable fiber catheter and a puncture needle are withdrawn, the electrode lead is fixed, and under the irradiation of an endoscope, after the epidural puncture needle enters a human body, the epidural puncture needle is inserted into the epidural target position. Video visualization is achieved in the whole process, repeated puncture is not needed, epidural space bleeding caused by repeated puncture is avoided, and the operation safety is higher.

The invention relates to application of 18F-FAPI-42 in preparation of a product for diagnosing lung lymphangioleiomyomatosis, and belongs to the technical field of radiography imaging agents. The invention discloses an application of < 18 > F-FAPI-42 in preparation of a product for diagnosing lung lymphangioleiomyomatosis. FAPI is a novel PET tracer agent, PET / CT of FAPI has the advantages of being low in radiation exposure, fast in-vivo metabolism and free of influences of blood glucose level changes, and patient tolerance is better. Compared with 68Ga, the radioactive isotope 18F has a longer half-life period and higher electron energy, and has more advantages in clinical use. As a novel PET / CT tracer, the 18F-FAPI-42 is remarkably superior to a traditional tracer 18F-FDG in the aspects of evaluating the condition of an LAM patient and identifying the focus of the LAM patient, including renal vascular smooth muscle lipoma, mediastinal lymphatic vessel myoma, abdominal lymphatic vessel myoma and pelvic lymphatic vessel myoma.

A split-flap integral fully synchronous bolt twisting and stretching mechanism belongs to the technical field of twisting and stretching of bolts for pressure vessels of nuclear power reactors. The scheme is as follows: it includes a bolt adapter, a C-type bracket, a B-type bracket, an A-type bracket, a plurality of bolt storage racks, bolts, a robot for twisting bolts, a split-flap fully synchronous bolt stretching machine for bolt stretching, bolt elongation measurement and main nut twisting, and a control console. A C-type bracket, or a B-type bracket, or an A-type bracket is respectively arranged on each bolt storage rack. Each C-type bracket, B-type bracket, and A-type bracket are provided with a plurality of bolts. A bolt adapter is respectively connected to each bolt. The control console is connected to the twisting split-flap fully synchronous bolt stretching machine. Beneficial effect: The present invention adopts a split-flap mechanism to install an integral fully synchronous bolt twisting and stretching mechanism. Because of its small size and light weight, it is more convenient and quick to install, saves time and effort, and is particularly suitable for occasions where the installation space is limited.

The invention discloses a device and a method for automatically identifying a near-dry state of a solution in a small chamber. The device comprises a camera, an annular light source, a base, a heating part, a photoelectric sensor and a temperature sensor, the heating part is located on the base, and the camera and the circumferential light source are located at the top of the heating part; the annular light source emits a light beam with a specific wavelength to vertically irradiate a sample solution in the heating part, the photoelectric sensor receives a transmission light signal / reflection light signal penetrating through the solution, and the temperature sensor synchronously collects the temperature of the heating part. The method is suitable for a radioactive metal oxide powder sample pretreatment scene. The method can objectively and accurately judge that the solution is evaporated and concentrated to the nearly dry state in real time, and manual intervention is not needed.

The invention relates to a device and a method for preparing an iodine source for an iodine adsorber performance test. The device comprises a negative pressure operation box, a tray, a pipettor, a cover conveying and rolling device, purification equipment, an operation frame and a controller, the tray, the pipettor and the cap conveying and rolling device are all arranged in the negative pressure operation box, and a plurality of containing grooves are formed in the tray; the accommodating groove is used for accommodating and fixing reagent bottles; the pipettor is used for quantitatively transferring liquid in different reagent bottles; the cap conveying and rolling device is used for providing bottle caps for the reagent bottles and tightly rolling the bottle caps on the reagent bottles so as to realize sealing; the operation frame is used for driving the pipettor and the cap conveying and rolling device to move; the purification equipment is used for maintaining the negative pressure state in the negative pressure operation box, purifying the extracted gas and discharging the purified gas; and the controller is used for controlling the tray, the pipettor, the cap conveying and rolling device, the purification equipment and the operation frame to act. According to the invention, the risk of radioactive irradiation on operators is reduced; and the quantitative preparation progress is improved, so that the reliability of performance evaluation of the iodine adsorber is ensured.

The invention discloses a radiology department digital gastrointestinal machine imaging control method and system, and relates to the technical field of radiology department digital gastrointestinal machine imaging control, and the method comprises the steps: carrying out the data collection based on image collection and processing; carrying out image optimization and personalized dose control; and generating a report according to the acquired image and the control result. According to the method, X-ray dose parameters are predicted and adjusted in real time based on a deep learning algorithm and data collected in real time, the radiation dose is controlled at the lowest level on the premise of ensuring that diagnosis requirements are met, noise and artifacts in images are effectively removed through the technologies of noise filtering, high-pass filtering, non-local mean denoising and the like, and the diagnosis accuracy is improved. According to the method, the definition and readability of the image are improved, the diagnosis report is automatically generated according to the collected image and the control result, the time of a doctor is saved, the diagnosis efficiency is improved, the report generation process is automated, the possibility of human errors is reduced, and the report reliability is improved.

The present invention discloses a PET-CT image synthesis method based on slice continuity and semantic segmentation enhancement, comprising the steps of: sampling and preprocessing PET / CT data, embedding a slice continuity Transformer module into a UNet framework, constructing a slice continuity synthesis network, and synthesizing an intermediate step CT; using whole body segmentation to perform tissue segmentation on a real CT, etc., to obtain segmentation mask information of the intermediate step CT; using UNet as a generator and FCN as a discriminator, constructing a semantic segmentation enhancement network, and inputting the intermediate step CT and the segmentation mask information of the intermediate step CT into the semantic segmentation enhancement network to obtain a synthetic CT; using a combined loss function of L1 loss function and L2 to optimize the slice continuity synthesis network in S3. The present invention can convert PET images obtained from clinical scans into synthetic CT images with rich anatomical structure information, effectively improving the diagnostic value of images.

The invention provides a reamer and an assembling method thereof, and relates to the technical field of medical instruments. The reamer comprises a drill tail, a double-face convex bead connecting piece, a double-face concave bead connecting piece and a drill bit. The two ends of the double-face convex bead and the double-face concave bead connecting piece are connected with the drill tail and the drill bit respectively. By means of the flexible shaft structure, sufficient rigidity and torque transmission efficiency are guaranteed, meanwhile, good space adaptability and path adjustability are achieved, continuous and smooth steering can be achieved in a medullary cavity along a complex anatomical path, multi-angle bone channel reaming through a single incision is supported, the number of puncture times and instrument replacement are reduced, and operation is easy and convenient. The risks of tissue damage, bleeding and infection are reduced. Meanwhile, the multi-channel positioning precision and collaboration are improved, the screw layout is optimized, the internal fixation stability is enhanced, the perspective frequency and X-ray exposure in the operation are reduced, and the operation safety and efficiency are improved. The invention is suitable for percutaneous minimally invasive fixation of complex pelvic fracture, and breaks through the application limitation of traditional rigid instruments.

The utility model relates to a medical auxiliary instrument, in particular to an ankle joint stress position auxiliary device which comprises a placing plate. A plurality of groups of insertion holes are formed in the top end of the placement plate; the insertion holes penetrate through the surface of the placement plate; a plurality of groups of inserting rods are arranged at the top end of the placing plate; according to the design, a patient can autonomously maintain the body position without assistance of assistants, meanwhile, the ankle joint can be limited and preliminarily pressurized by inserting the inserting rod into the inserting hole, then the ankle joint is further manually and controllably pressurized through the air bag till the body position is satisfied, the first air bag is of a non-rigid structure capable of finely adjusting and controlling pressure, the pain feeling of the patient is relieved, and the patient is more comfortable. According to the utility model, local pressure on the lateral malleolus and the front side of the tibia is relieved, so that iatrogenic injury is avoided, meanwhile, the placement plate is made of an acrylic material, and by utilizing the characteristic of high X-ray transmittance of the placement plate, the conditions of ankle joint instability and ligament injury can be evaluated more quickly, and the diagnosis efficiency is improved.

This specification relates to a method, apparatus, and device for reconstructing PET images. The method includes: acquiring a positron emission tomography (PET) image to be reconstructed; inputting the PET image into a pre-trained degradation pattern recognition model to obtain degradation pattern information of the PET image; inputting the PET image and the degradation pattern information into a pre-trained reconstruction model to obtain a reconstructed PET image; wherein the reconstruction model uses the degradation pattern information as prior information to predict and remove degradation components of the PET image. By identifying and utilizing degradation pattern information, the reconstruction model can achieve reconstruction quality no less than that of multimodal fusion methods using only single-modal PET data. This fundamentally avoids registration errors and significantly reduces patient radiation exposure and examination costs.

The invention relates to the technical field of medical instruments, and discloses a radiofrequency ablation guide wire system for opening chronic complete occlusion of blood vessels. The system comprises a radio frequency guide wire, a monitoring device, a control device, a feedback device and a radio frequency generator. The radio frequency guide wire is provided with a movable electrode and a return electrode composed of a plurality of expandable and contractible return sub-electrodes. And the monitoring device monitors the current, impedance and temperature of each return sub-electrode in real time. The control device judges the electrode position relation according to the monitoring data and adjusts the radio frequency output. The feedback device provides sound, light or visually displayed position adjustment prompts. The system can further comprise a snare structure, a radiopaque marker, a hollow inner core and other functional components. The accuracy, the safety and the operation convenience of chronic complete occlusion interventional therapy are improved, the dependence on X-ray radiography is reduced, the operation process is simplified, and wide clinical application prospects are achieved.

A method, system, and apparatus for optimizing a medical imaging process with process and machine learning techniques to reduce unexpected exposure to harmful radiation are described herein. The machine learning model may be trained to output recommended medical imaging device operating parameter settings. Available operating parameters of the medical imaging device may be determined, and patient data may be received. Patient data and available operational parameters may be used as inputs to a trained machine learning model, which may output recommended operational parameter settings. In turn, this output, as well as other calculations, may be used to transmit data to the medical imaging device that modifies operating parameters of the medical imaging device. Metadata corresponding to one or more images captured by a medical imaging device may be received, and the trained machine learning model may be further trained based on the metadata.

The present invention belongs to the field of medical data processing technology, and specifically relates to a multi-element focused ultrasound focus shifting method, system and storage medium. The method and system of the present invention use the focus shift test results of the reference positioning point to predict the actual phase difference of the skull, and then perform focus correction based on the obtained phase difference. Focus correction according to the present invention has the advantages of reducing the radiation exposure received by the patient, shortening the treatment process and eliminating the positional offset of the patient's head movement. Therefore, the present invention has a good application prospect in neuroregulation.

The invention provides a puncture robot system based on a flexible marker and a non-intrusive positioning method thereof, and relates to the technical field of puncture surgical robotics.The system comprises a collaborative robot which comprises a robot body and an actuator, and the actuator comprises a linear driver and a puncture needle; a plurality of flexible pasting type tracking marks; positioning the tool pen; the visual system is used for scanning and acquiring position information; the processor is connected with the visual system and the collaborative robot, and the processor is used for determining that a puncture inlet point coordinate of a puncture needle reaches a focus point coordinate and controlling the collaborative robot to drive the puncture inlet point of the puncture needle to reach the focus point. Wherein the position from the puncture inlet point coordinate of the puncture needle to the focus point coordinate is determined according to the following method. The device has the beneficial effects that the accuracy of puncture positioning is improved, and the number and size of surgical wounds are reduced; positioning and planning can be carried out without damaging tissues and bones of a patient, and secondary damage in the positioning process is avoided.

The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette liquid crystal display screen with an anti-radiation function, which comprises an electronic cigarette body, a display screen body is fixedly connected to the top of the electronic cigarette body, and a protective frame is fixedly connected to the top of the electronic cigarette body and located on the outer side of the display screen body. An anti-radiation plate is slidably connected to one side of the protective frame, a sliding groove is formed in one side of the inner wall of the protective frame, the anti-radiation plate is slidably connected with the sliding groove, and a driving motor is fixedly connected to one side of the top of the protective frame. The anti-radiation electronic cigarette has the advantages that even if the quantity of radiation generated by the liquid crystal display screen of the electronic cigarette is small, radiation exposure of a user can be further reduced through anti-radiation treatment, especially for people who often use the electronic cigarette, the anti-radiation electronic cigarette directly and remarkably affects human health, but the anti-radiation electronic cigarette has a remarkable effect on reduction of any potential long-term health risk. And any radiation reduction is good, and compared with a traditional device, the working quality and the use efficiency are greatly improved.

The utility model relates to the technical field of medical auxiliary devices, and discloses a fixing auxiliary device for positioning the tip of a newborn PICC (Peripherally Inserted Central Catheter), a fixing headrest is adhered and fixed on a body position fixing pad, a pair of headrest adjusting ropes is movably mounted on the lower surface of the fixing headrest, and fixing sleeve magic tape surfaces A are arranged at two free ends of the upper surface of the fixing headrest; a restraint jacket is fixedly adhered to the position, below the fixed headrest, of the body position fixing pad, the restraint jacket comprises two restraint fixing sleeves, and fixing sleeve hook-and-loop fastener surfaces B which are adhered and matched with the fixing sleeve hook-and-loop fastener surfaces A are arranged at cuffs of the restraint fixing sleeves; a lower limb fixing pad is adhered and fixed on the position fixing pad below the restraint jacket, a lower limb fixing shell bracket is fixed on the upper surface of the lower limb fixing pad, a lower limb fixing shell is embedded in the lower limb fixing shell bracket, and the included angle between the upper section and the lower section of the lower limb fixing shell is 90 degrees; an angle of 45 degrees is formed between the upper section of the lower limb fixing shell and the edge of the lower limb fixing pad, and a flexible buffer layer is padded in the lower limb fixing shell.

The application provides a multi-stage adjustable pulmonary vascular intervention balloon catheter and belongs to the field of medical devices. The catheter is fixedly connected with a tube main body at one end, and the tube main body is fixedly connected with a pressure charging cavity, a guide wire cavity and a pressure relief cavity at the end away from the catheter, respectively. The pressure charging cavity, the guide wire cavity and the pressure relief cavity are in communication with the tube main body. The catheter is fixedly connected with a soft head at one end, and the pressure charging device is arranged at the end of the catheter close to the soft head. The application can trigger the opening of the corresponding valves of the inner, middle and outer three layers of balloons in sequence by means of precise control of the pressure charging pressure, realize the grading expansion effect of the precise shaping of the outer layer of balloons at 6 atm under the pre-expansion of the inner layer of balloons at 2 atm and the superimposed expansion of the middle layer of balloons at 4 atm, avoid the risk of overpressure by matching the spring safety valve opened at 8 atm in the pressure relief channel, enable the balloon to retract quickly and the valve to close automatically by negative pressure suction, reduce the risk of guide wire displacement, shorten the operation time and reduce the radiation exposure of patients.

The invention provides a control system for disassembling an isotope target cylinder, and the system comprises a target cylinder harness which is used for placing and fixing a target cylinder needing to be disassembled; the target cylinder harness position sensor is used for judging the position of the target cylinder placed on the harness; the target barrel harness force sensor is used for measuring the clamping force when the target barrel harness clamps the target barrel; the target cylinder external pulling device is used for adjusting the position of the target cylinder on the harness along the axial direction of the target cylinder; the target barrel external pulling device force sensor is used for measuring the clamping force of the target barrel external pulling device on the target barrel; the movable sliding table is used for moving the target barrel cutting device and the target barrel pulling-out device; a moving slipway position sensor for measuring the displacement of the movement of the moving slipway; the target cylinder cutting device is used for cutting one end of the target cylinder; and the central control module is used for receiving the control parameters and completing the disassembly of the rake cylinder. The invention further provides a method for disassembling the isotope target cylinder. The working efficiency is improved, and the personnel radiation receiving amount is reduced.

The invention provides an artificial intelligence method for mutual conversion of a whole body PET image and a CT image. The mode conversion between the whole body CT image and the PET image is realized by using an enhanced conditional generative adversarial network (cGAN) model. According to the method, a residual error convolution block and a full convolution Transform block are combined, so that the capability of capturing local features and global context information of a model is improved. According to the method, a customized loss function is designed, and the overall quality of the generated image can be improved in combination with the structural consistency loss. At CT-gt; pET (polyethylene terephthalate) and PET-gt; a large number of experiments are carried out on two modal conversion tasks of CT, and results show that the model can generate high-quality images, and the images are close to original images in the aspects of clinical correlation and diagnostic value. The transformer-combined cGAN framework provided by the invention can reduce the requirement of multi-modal image examination, so that the radiation exposure dose and the overall medical cost of a patient are reduced, and a solid foundation is laid for clinical application of PET-CT multi-modal image conversion.

The present disclosure provides a pencil beam dose calculation method, comprising: acquiring human body image data; determining a plurality of particle types for treatment; calculating an initial pencil beam dose distribution corresponding to each particle type; determining a target action layer of each dose distribution in the human body image data based on the particle type, wherein the target action layer positions corresponding to different particle types are different; adjusting each initial dose distribution based on the target action layer corresponding to each particle type to obtain a particle pencil beam dose distribution corresponding to each particle type; superimposing the particle pencil beam dose distributions corresponding to each particle type to obtain a target pencil beam dose distribution; wherein the dose proportion of the particle pencil beam dose distribution corresponding to the same particle type in the target action layer is greater than the dose proportion of the particle pencil beam dose of the particle type in other parts of the human body image data.

The invention discloses X-ray image scanning equipment, and relates to the technical field of medical equipment. The device comprises an adjusting cross frame, an X-ray detector is fixed to one end of the adjusting cross frame, an X-ray emitter is installed at the other end of the adjusting cross frame through a telescopic assembly, and the distance between the emitter and the detector can be adjusted. Two lead plates with adjustable spacing and position are arranged between the emitter and the detector, and movement of the top lead plate supporting frame and the bottom lead plate supporting frame is respectively controlled through the central lead screw and the sleeve shaft lead screw, so that independent and accurate adjustment of the lead plates is realized. The equipment adopts an electromagnetically coupled rotating disc and a central rotating shifting gear, so that the flexible control of the position of the lead plate is realized.

A radiographic image capturing device according to the present disclosure includes: an image output unit that outputs a first radiographic image included in continuous radiographic images obtained by radiographic imaging of a subject; an image brightness information extraction unit that obtains brightness information from the first radiation image; a first irradiation condition calculation unit that determines a first irradiation condition on the basis of the luminance information; an irradiation control unit that controls the dose of radiation on the basis of the first irradiation condition; a second irradiation condition calculation unit that determines a second irradiation condition on the basis of a second radiation image generated on the basis of the first irradiation condition when an imaging site of the subject is fixed; and a dose reduction unit that reduces or maintains a dose of radiation on the basis of the second irradiation condition.