20 results about "External irradiation" patented technology

The application belongs to the technical field of biological medicine, and particularly relates to an ultrathin radioactive patch for skin cancer treatment and a preparation method thereof. The preparation method comprises the following steps: adding a photoinitiator solution into a methyl methacrylate gelatin solution, and performing water bath heating dissolution under light shielding conditions; after the dissolution is completed, mixing the radioactive particles used for external irradiation treatment, stirring to a semi-solid state, smearing to a patch bottom film by using a smearing part, covering the patch anti-adhesion paper on the surface, irradiating and curing by using a light source, and obtaining the ultrathin radioactive patch. The patch prepared by the application can be customized according to the size and shape of a lesion site, a corresponding bottom film is cut out and attached to the lesion site, and smearing is directly performed. Compared with a common radioactive hydrogel, the preparation method is simpler, the preparation time is shorter, and the efficiency is higher.

The invention discloses a finite box rectangular horn shape optimization method and system based on a hybrid model, and the method comprises the steps: carrying out the geometric discretization of a rectangular horn in the axial direction into rectangular pipeline sections which are connected end to end, and determining a to-be-optimized design variable; pre-calculating a radiation impedance matrix and a far-field directivity primary function vector under a finite box body by adopting an external radiation model; calculating an inlet impedance matrix and a speed transmission matrix of each rectangular pipeline section on the basis of a radiation impedance matrix and a current design variable by adopting a sound transmission model in the horn, obtaining a mouth output speed vector, and solving an acoustic performance index in combination with a far-field directivity primary function vector; and constructing a comprehensive objective function, and solving to obtain a finite box rectangular horn shape optimization scheme. According to the method, the edge diffraction and sound reflection effect in a limited box environment can be accurately simulated, and the radiation efficiency optimization and directivity control of the broadband of the rectangular horn are realized while the calculation cost is remarkably reduced.

New techniques for remote administration of medicine and medical devices using an external guidance and activation system are provided. In some embodiments, medicine(s) and / or medical device(s) is / are energized to a predetermined threshold energy level by externally applied radiation, and then driven into the treatment target. The design of such device(s) (e.g., injectable machine(s)) may include sub-device(s), e.g., medical payload-carrying reservoir(s), injector(s) and abrasive tool(s), which may be activated magnetically and / or by such radiation. In some aspects, such sub-device(s) include actuable housing(s) and / or other sub-tool(s), delivering drugs to specific locations commanded by a control system or a user. In other aspects, a medicine and / or device is provided with multiple dipoles, each oriented differently in three-dimensional space, allowing a guidance control system, remote from the medicine or device, to drive the movement and three-dimensional orientation of the medical agent or particle according to a three-dimensional path.

This invention discloses a puncture device and puncture system, including a puncture needle mechanism, a linearly movable moving mechanism, and a clamping mechanism for supporting the puncture needle mechanism. The moving mechanism includes a base, a sliding component, and a puncture driving component. The sliding component is slidably disposed on the base. The puncture driving component includes a shielding box for shielding external radiation and a puncture driving member. The shielding box is connected to the base, and the puncture driving member is built into the shielding box and connected to the sliding component, used to drive the sliding component to move linearly relative to the base. The clamping mechanism includes a first clamping component and a clamping driving component. The first clamping component is disposed on the sliding component, and the clamping driving component is built into the shielding box and connected to the first clamping component, used to drive the first clamping component to clamp or release the puncture needle mechanism. This invention eliminates the need for manual operation of the puncture needle for puncture.

The present disclosure relates to an automatable measuring device 100 applicable to any electromagnetic radiation source 200, in particular a vehicle headlight during a headlight test, as well as a system and a method which make it possible to reconstruct the four-dimensional electromagnetic radiation field of the radiation source 200 by consecutively capturing restricted light beams of the radiation source 200 to be analyzed, and thus to provide an efficient, cost-effective and extremely precise measuring mechanism for determining any radiation pattern deviations.

The invention relates to a radioactive gas extraction device with an external irradiation shielding function and a manufacturing and using method thereof. The device comprises a shell (1), a gas guide joint nut (2), a gas guide tube (3), a gas outlet joint (4), a gas outlet joint nut (5), a heating layer (6) and an external shielding layer (7), a radioactive gas to-be-extracted product is arranged in the shell (1), the gas guide connector nut (2) is communicated with the interior of the shell (1) through the gas guide pipe (3), the gas outlet connector nut (5) is communicated with the interior of the shell (1) through the gas outlet connector (4), and a heating layer (6) and an outer shielding layer (7) are sequentially arranged on the outer side of the shell (1). Compared with the prior art, the external radiation shielding function of the device is expected to achieve the effects of a traditional extraction hot chamber and an extraction furnace, and meanwhile, conditions can be created for continuous extraction of radioactive gas.

A thermal imaging capture system is proposed comprising: - a housing (110) defining a first aperture, - a window (120) configured to at least partially cover the first aperture, and - a capture device (130) positioned inside the housing and comprising a sensor (131) and an outer casing (132), the outer casing housing the sensor and defining a second aperture. The window, the first aperture, and the second aperture are positioned to allow external radiation to pass to the sensor. According to the invention, the thermal imaging capture system includes a thermal interface (140) positioned to be in contact with the window and with the capture device, said thermal interface defining a third aperture configured to allow said external radiation to pass to the sensor and to define, with the window and the capture device, a sealed space containing a gas layer.Figure for the abridged version: Fig. 1.

The invention belongs to the technical field of medical detection, and discloses a method and system for quantifying the relative bioavailability of the internal irradiation dose of a nuclide drug, and the method comprises the steps: dividing the same batch of experimental animals carrying tumors into two groups, and respectively carrying out the internal irradiation of a to-be-detected treatment nuclide drug and the external irradiation of a contrast nuclide drug, radiation damage information and / or radiation response information of the two groups of experimental animals are / is obtained, then the two groups of information are compared, dose pairing is carried out, and finally the relative bioavailability of the internal irradiation dose of the to-be-detected nuclide drug is calculated. The defects that in the prior art, the biological effect of nuclide medicine internal irradiation treatment is greatly different from that of traditional external irradiation radiotherapy, and a means for effectively quantifying the relative bioavailability of the nuclide medicine internal irradiation dose is lacked are overcome. The relative bioavailability of the irradiation dose in the nuclide medicine can be accurately quantified, and a scientific basis is provided for research, development and clinical application of targeted radiopharmaceuticals.

The application discloses a shaft current and radiation emission integrated test method and system for an electric drive system, and belongs to the technical field of testing. Through real road working conditions, the method and system realize the synchronous collection of multiple physical quantities of the electric drive system, and combine a high-fidelity digital twin model to perform dynamic correction and simulation analysis, thereby solving the problems of misalignment of data, missing correlation between internal shaft current and external radiation field, and incapability of quantifying the contribution of the shaft current in the traditional test. Therefore, the specific influence of the shaft current in the total radiation emission of the electric drive system can be accurately identified, a quantitative basis is provided for the diagnosis and optimization of electromagnetic compatibility problems, and the efficiency and accuracy of the EMC test and rectification of the electric drive system of the new energy vehicle are improved.

The invention provides a multi-sensor distributed signal detection system based on a reconfigurable intelligent surface, which belongs to the field of wireless communication and comprises a plurality of sensor nodes, a fusion center and at least one external radiation source. After each sensor node independently completes target detection, a public radio frequency signal emitted by the same external radiation source is directly used as an information carrier, the phase and direction of a reflected signal are regulated and controlled in real time through the reconfigurable intelligent surface module, and modulation and transmission of information are naturally completed in a wireless channel. According to the architecture, the node structure is greatly simplified, and the hardware cost is remarkably reduced. The fusion center only needs to execute matched filtering based on known signal waveforms and constant false alarm rate threshold judgment on the received superposed signals to complete global decision, a complex signal fusion algorithm and a mass data processing link in a traditional distributed detection system are omitted, and millisecond-level processing delay is shortened to microsecond-level processing delay. And the real-time performance of the system is obviously improved.

The invention discloses a construction method and application of an acute radioactive olfactory disorder animal model, a linear accelerator is adopted to perform single dose gradient external irradiation on the head and neck of a mouse, and the model can stably simulate dose-related acute radioactive olfactory disorder and has the advantages of high survival rate, low cost, simplicity and convenience in operation and good repeatability. And a foundation is laid for related researches on an acute radioolfaction disorder generation mechanism and prevention and treatment of head and neck malignant tumor radiotherapy.

The application discloses a passive radar target positioning method and system based on external radiation sources, and relates to the technical field of radar positioning. The method comprises the following steps: screening external radiation source signals of a target monitoring area, and arranging a distributed receiving antenna array based on the signals; real-time receiving signals and transmitting the signals to a quality assessment unit; the quality assessment unit adaptively screens the signals, and outputs standard radiation source signals with radiation source type identification; characteristic parameters of the standard signals are extracted, a multivariate signal feature set is obtained, and multi-band signal fusion and target positioning analysis are carried out based on the feature set, so as to generate target position information. The application solves the technical problems of complex signal processing, insufficient positioning accuracy and limited dynamic monitoring capability of existing passive radar technology in a complex electromagnetic environment, achieves the technical effect of improving the positioning accuracy and dynamic monitoring capability of passive radar in a complex environment through multi-band signal fusion and adaptive signal processing.

An apparatus for thermal ablation testing is provided. The apparatus comprises a chamber; an optically transparent window in the chamber; a sample holder inside the chamber; a test sample in the sample holder; a number of bare-wire thermocouples connected to the test sample, wherein the thermocouples generate temperature data in the form of voltage; a mass balance inside the chamber, wherein the mass balance is configured to hold the sample holder and dynamically detect changes in mass of the test sample; an external radiant heat source configured to heat the test sample through the window; a plasma source configured to generate a number of atomic species in the chamber; and a pyrometer directed at the test sample.

A test apparatus and method for testing a semiconductor device. The semiconductor device includes an integrated circuit and a plurality of external radiation elements located at a surface of the device. The external radiation elements include at least one transmitting element and a receiving element. The test apparatus includes a plunger. The plunger includes a dielectric portion having a surface for resting against the surface of the device. The plunger also includes at least one waveguide. Each waveguide extends through the plunger to route electromagnetic radiation emitted by one of the transmitting elements of the device to one of the receiving elements of the device. Each waveguide includes a plurality of waveguide openings for electromagnetic coupling to a corresponding radiation element of the device. The dielectric portion is configured to provide a matching interface for the electromagnetic coupling of the waveguide openings with the plurality of external radiation elements of the device.

The utility model relates to the technical field of square cabins, and discloses a modularized medical rescue square cabin system, which comprises a decontamination square cabin, a dose detection square cabin and a first-aid square cabin, the decontamination square cabin comprises a dressing initial examination room, a decontamination room, a skin drying room and a reexamination room which are communicated in sequence, the decontamination room is provided with a first decontamination device, the dose detection square cabin comprises a detection room, and the detection room is provided with a second decontamination device. The detection room is provided with an internal and external irradiation dose detection device, the first-aid shelter comprises a first-aid room, and the first-aid room is provided with a decontamination treatment bed and a second decontamination device. According to the modularized medical rescue shelter system, the three modularized shelters with different functions are arranged to form the modularized medical rescue shelter system, people can be reasonably classified and disposed in a targeted mode according to radioactive contamination conditions of different people, and targeted rescue of the people is facilitated.

The application belongs to the technical field of processing traveling wave tubes, and specifically provides a connecting method and system for a traveling wave tube radiator, which comprises the following steps: sleeving a radiation radiator on the outside of a collector, forming an annular gap between the inner ring surface of the radiation radiator and the outer ring surface of the collector; sleeving an annular sealing element on the outer ring surface of the collector away from one end of the body of the traveling wave tube, and sealing one end of the annular gap; arranging a notch on the inner ring surface of the radiation radiator close to one end of the body of the traveling wave tube, and installing a solder ring at the notch; prepositioning the radiation radiator and the collector through a mold; placing the combined structure of the radiation radiator and the collector in a vacuum heating furnace for heating; melting the solder ring, and flowing and filling the solder in the molten state into the annular gap; taking out the combined structure of the radiation radiator and the collector from the vacuum heating furnace, and taking it to the solder solidification; and removing the mold from the radiation radiator and the collector.

This invention relates to the field of radiation monitoring technology and discloses a method and system for real-time monitoring of radiation dose throughout the At-211 production process. The method includes: simultaneously acquiring gamma ray dose rate and neutron dose rate in real time at at least three fixed spatial points at 0 degrees, 90 degrees, and 180 degrees from the proton beam axis outside the bombardment cavity of the proton beam bombardment target; simultaneously acquiring the proton beam intensity in real time during the proton beam transmission process; generating dose monitoring instructions that can determine whether the radiation dose is abnormal or normal through multi-step collaborative analysis, accurately reflecting the internal and external radiation situation and potential abnormal risks, effectively avoiding the influence of signal lag or distortion from external radiation detectors, and thus accurately capturing changes in radiation dose within the bombardment cavity caused by instantaneous fluctuations in proton beam intensity, ensuring the health and safety of radiation during the bombardment process and the entire At-211 production process.

The invention relates to the technical field of radiation monitoring, and discloses a whole-course radiation dose real-time monitoring method and system for an At-211 production process, and the method comprises the steps: carrying out the real-time monitoring of the whole-course radiation dose on the periphery of a bombardment cavity of a proton beam bombardment target material at least at three fixed space point positions which form 0 degree, 90 degrees and 180 degrees with the axis of a proton beam, the gamma ray dose rate and the neutron dose rate are synchronously obtained in real time, and the proton beam intensity is obtained in real time in the proton beam transmission process; through collaborative analysis of a plurality of steps, a dose monitoring instruction capable of judging that the radiation dose is abnormal or normal is generated, internal and external radiation situations and potential abnormal risks are accurately reflected, and the influence of signal lag or distortion of an external radiation detector is effectively avoided; furthermore, the radiation dose change in the bombardment cavity caused by the instantaneous fluctuation of the proton beam intensity is accurately captured, and the health and safety of the At-211 production bombardment link and the whole process radiation are ensured.

The invention relates to the technical field of nuclear technology application. The invention discloses a method and system for testing the ray shielding performance of radiation protection clothing in a real scene, and the method comprises the steps: vertically placing the radiation protection clothing, and placing the radiation protection clothing in a radiation field; measuring external radiation dose data and internal radiation dose data of the to-be-measured part of the radiation protection suit through a radiation dose measuring device; and according to the external radiation dose data and the internal radiation dose data of the to-be-detected part of the radiation protection suit, calculating to obtain a ray shielding rate and a linear attenuation coefficient of the radiation protection suit. According to the invention, the radiation protection suit is vertically placed, and the external radiation dose data and the internal radiation dose data of the to-be-tested part of the radiation protection suit are measured by the radiation dose measuring device, so that the ray shielding rate and the linear attenuation coefficient of the radiation protection suit are obtained. The gamma-ray shielding performance test of the protective clothing in a real wearing scene can be simulated, and the test accuracy is improved.

The invention relates to a photonic device (1) comprising a photonic chip (PIC) having at least one waveguide (WG) arranged in the principal plane (P) and at least one receiving zone (Z) arranged on a surface of the photonic chip (PIC), the waveguide (WG) and the receiving zone (Z) being optically coupled to each other to propagate internal light radiation consisting of at least one mode. The photonic device also comprises a multiplane conversion device (MPLC) assembled to the photonic chip (PIC) and comprising a first optical port (P1), optically associated with the receiving zone (Z) of the photonic chip (PIC), and a second optical port (P2) for receiving external radiation, the external light radiation being capable of propagating between the second optical port (P2) and the first optical port (P1) during a plurality of reflections and / or transmissions on microstructured areas of the multiplane conversion device (MPLC).Figure to be published with the abbreviation: Fig. 1.