544 results about "Radiation exposure" patented technology

The invention relates to an optically controllable switching device having a first and second line section, between which an optically controllable switch (T2) is inserted, and having a sensor element (SE). The optically controllable switch (T2) disconnects or connects depending on an optical switching signal (SB), whether the switch is "on" or "off". The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) which depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescent radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescent radiation (FL) and for detecting a measured value signal which depends on the intensity of the fluorescent radiation (FL) and / or on the phase shift of the modulation signal of the temporal profile of the intensity of the fluorescent radiation (FL). The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) and for controlling the state of the optically controllable switch (T2) using this optical switching signal (SB).The optical switching signal (SB) depends on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal course of the intensity of the fluorescence radiation (FL).

The invention relates to a purely optical fuse with a first and second line section, between which an optically controllable switch (T2) is inserted, and with a sensor element (SE). The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) that depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescence radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescence radiation (FL) and for detecting measured values which depend on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal progression of the intensity of the fluorescence radiation (FL). The purely optical fuse compares these measured values with intensity and / or phase shift threshold values.The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) depending on the comparison result and for controlling the state of the optically controllable switch (T2) with this optical switching signal (SB).

The invention relates to a sensor head (20), wherein the sensor head (20) comprises a sensor element (11), a glass fiber and / or an optical waveguide (6). The sensor element (11) is mechanically and optically connected to the first end of the glass fiber or the optical waveguide (6) such that the glass fiber or the optical waveguide (6) can irradiate the sensor element (11) with pump radiation of a pump radiation wavelength, which the glass fiber or the optical waveguide (6) transports in the direction of the sensor element (6), and the glass fiber or the optical waveguide (6) can detect fluorescence radiation with a fluorescence radiation wavelength from the interior of the sensor element (11) and transports it in the direction away from the sensor element (6). The sensor head comprises a ceramic ferrule (7) with an inner tube along its longitudinal axis.The optical fiber (6) is inserted into the inner tube of the ferrule (7) so that the sensor element (11) is located at the other end of the ferrule (7) and / or protrudes from the inner tube of the ferrule (7). The ferrule (7) is inserted into a hollow tip (3) so that the sensor element (11) is preferably located at the tip of the hollow tip (3). The hollow tip (3) is inserted into a ceramic tube (2). The sensor head (20) comprises a shuttle (8). The glass fiber or the optical fiber (6) is guided within the shuttle (8). The shuttle (8) is inserted within the ceramic tube (2). The hollow tip (3) closes the ceramic tube (2). A holder (1) is pushed or plugged onto the ceramic tube (2). The glass fiber or the optical fiber (6) is guided outside the sensor head (2) in an outermost fiber shield (5).The sensor element (11) comprises crystals with paramagnetic centers that emit fluorescence radiation upon irradiation with pump radiation of the pump radiation wavelength. The crystal can, in particular, comprise diamond with NV centers and / or ST1 centers and / or TR1 centers as paramagnetic centers.

In the case of forming a fine resist pattern, it is desired to further reduce the roughness of the resist pattern.SOLUTION: A substrate processing apparatus comprising: a heat treatment unit configured to bake a resist film; an exposure unit configured to irradiate the resist film having a portion irradiated with a first radioactive ray with a second radioactive ray; a development unit configured to form a resist pattern by development for removing a part of the resist film; and a control unit configured to control the exposure unit such that the second radioactive ray is collectively irradiated to an entire region of the resist film including the portion irradiated with the first radioactive ray and a portion other than the portion irradiated with the first radioactive ray. The first radiation is ionizing radiation or non-ionizing radiation, and the second radiation is non-ionizing radiation. When the first radiation is non-ionizing radiation, the second radiation is non-ionizing radiation having a wavelength longer than the wavelength of the first radiation. The resist film includes a metal oxide photoresist material.SELECTED DRAWING: Figure 1

Described herein are novel linkers for use with immunoconjugates to connect a targeting moiety to a radiochelator moiety without impairing the functionality of either. The linkers of the invention may provide a stable linkage in circulation, permit fast total body clearance including from organs such as the liver, high tumor uptake and high tumor-to-normal-organ radiation exposure (for example, in the liver and kidneys). The immunoconjugates can be used to deliver radioisotopes including alpha and beta emitters for the treatment of tumors or cancer.

The invention relates to a body position auxiliary detection method and system based on DR equipment. The method comprises the following steps: performing coordinate alignment on pressure distribution data and three-dimensional depth information of a patient to generate an initial body position three-dimensional point cloud model; matching a corresponding reference skeleton-muscle model based on the registration information, generating a registered body position three-dimensional model through non-rigid registration, and extracting coordinates of key anatomical mark points; a target structure theoretical projection area is calculated by combining a DR equipment C arm projection angle, an angle deviation vector is acquired by comparing an actual projection boundary, and a dynamic correction mark is generated. According to the method, through space coordinate alignment, personalized model registration and real-time projection angle deviation correction, the accuracy and efficiency of body position placement are remarkably improved, radiation exposure caused by repeated shooting is reduced, and therefore the medical image quality and diagnosis reliability are remarkably improved.

The invention relates to a device (1) for imaging micro- and / or nanostructures, in particular structures on microlithography masks. The device (1) comprises an illumination device (10) for illuminating an object (20) with illumination radiation and an image capture unit (40) for capturing the illumination radiation transformed by the object (20), wherein the device (10) is designed to be focusable, wherein the image capture unit (40) comprises at least two image capture sensors (45, 46, 47) which are arranged such that at least one image capture sensor (45, 46, 47) is defocused regardless of the focusing of the device (1).

The present invention relates to a device for measuring a line current. Said device comprises at least three sensor elements having paramagnetic centres, a pump-radiation source, an optical system, and at least three photodetectors which function as part of receiving systems and are each associated with a sensor element. In addition, the device contains two magnetic field sources which generate different bias magnetic fields for each sensor element. The pump-radiation source emits pump radiation into the optical system, which distributes the pump radiation to the sensor elements and thereby irradiates the paramagnetic centres with the pump radiation. These centres emit fluorescence radiation, the intensity and phase shift of which depend on the AC drive signal of the evaluation and control device and on the magnetic flux density acting upon them. The fluorescence radiation is separated from the pump radiation by the optical system and guided onto the photodetectors. The evaluation and control device generates a single-frequency sinusoidal AC drive signal having a frequency of 22 MHz (-4 MHz / +7 MHz), or within a range of 18 MHz to 29 MHz. The lock-in amplifiers are coupled to the sensor elements and evaluate the output signal of the photodetectors with respect to the AC drive signal in order to produce measurement values. Based on these measurement values, the evaluation and control device determines an estimated value for the magnitude of the line current in the line.

The invention relates to a measuring head comprising an insulating body (IK), a first and second end fitting (EB1, EB2) with fastening means (BFE) for a line (LTG), and a sensor element (SE). The sensor element (SE) comprises a carrier material (TM), one or more crystals comprising paramagnetic centers (NV1), and a first and second optical waveguide (LWL1, LWL2), which may be identical to one another. The sensor element (SE) is mechanically connected to the first end fitting (EB1), which has fastening means (BFE) for fastening the line (LTG). The second end fitting (EB2) has means for fastening the first and / or second optical waveguide (LWL1, LWL2) to the first and / or second end fitting (EB2), respectively. The first and / or second optical waveguide (LWL1, LWL2) are guided within the insulating body (IK) in an electrically insulated manner from the first (EB1) to the second end fitting (EB2). The first end fitting (EB1).The first optical fiber (LWL1) and / or the second optical fiber (LWL2) are attached to the first end fitting (EB1). The second optical fiber (LWL2) detects fluorescent radiation (FL) from the sensor element (SE), while the first optical fiber (LWL1) transports pump radiation (LB) through the insulating body (IK) to the sensor element (SE) and irradiates the sensor element (SE) with pump radiation (LB). When irradiated with pump radiation (LB), the paramagnetic centers (NV1) of the sensor element (SE) emit fluorescent radiation (FL), which depends on the magnetic flux density B at the location of the sensor element (SE).

The invention relates to a method for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), comprising the steps of: arranging the connecting material (3) between the holding element (1) and the optical element (2), and curing the connecting material (3), wherein the connecting material (3) is irradiated with radiation (4) for curing the connecting material (3) for curing. The object of providing a method with which a holding element can be connected to an optical element in a process-reliable manner, which allows flexible optical designs and is cost-effective, is achieved in that the radiation (4) for curing the connecting material (3) is coupled into the connecting material (3) by means of a deflection device (5) for deflecting the radiation (4).The invention further relates to a holding element (1) for connection to an optical element (2) by means of a connecting material (3) and to a system (10) for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), in particular for carrying out the method according to the invention.

The present invention relates to a current sensor with an electrical conductor having at least two meander loops. Each meander loop consists of a first and a second conductor section, which are connected in series and run in parallel. The distances between the conductor sections are different for the two meander loops. Sensor elements with NV centers and / or paramagnetic centers are placed in the slots of the meander loops. The current sensor has means for irradiating these centers with pump radiation, separating the generated fluorescent radiation, and detecting the intensity and time delay of the fluorescent radiation. This enables precise measurement of the current strength by evaluating the fluorescent radiation of the NV centers and / or paramagnetic centers in the meander loops.

Methods of forming a fluoride or oxyfluoride layer for an optical element for use in the VUV wavelength range, which methods comprise: depositing an oxide layer; and converting the oxide layer into the fluoride or oxyfluoride layer by irradiating the oxide layer with UV / VUV radiation in the presence of an active fluorination agent. An optical arrangement has at least one such optical element. An associated device for forming a fluoride or oxyfluoride layer for an optical element is designed for use in the VUV wavelength range.

An information processing device including a processor, wherein the processor is configured to: acquire an optical image obtained by optically imaging a subject; specify a position of a region of interest based on the optical image; and perform control of displaying a first marker indicating a center position of an irradiation field of radiation and a second marker indicating a position determined in advance for the specified region of interest, in a case in which the subject is radiographically imaged from a direction that is substantially the same as an imaging direction of the optical imaging, on a display in a form of being superimposed on the optical image.

Purely optically controllable switching device for purely optical control of the current flow in a line (LTG), wherein the purely optically controllable switching device comprises a line (LTG) and where one line (LTG) comprises a first line section and wherein one line (LTG) includes a second line section that is different from the first line section and does not overlap, and wherein the purely optically controllable switching device comprises an optically controllable switch (T2) and wherein the purely optically controllable switching device comprises one or more purely optical sensor elements (SE) and wherein the optically controllable switch (T2) is positioned in the line (LTG) between the first line section and the second line section and wherein the optically controllable switch (T2) in an “on” state electrically connects the first line section of the line (LTG) with the second line section of the line (LTG) and wherein the optically controllable switch (T2) in an “off” state electrically separates the first line section of the line (LTG) from the second line section of the line (LTG) and wherein an optical switching signal (SB) determines which of these two states, "On" state or "Off" state, the optically controllable switch (T2) assumes, and wherein the respective purely optical sensor element (SE) of the one or more purely optical sensor elements (SE) comprises a respective carrier material (TM) with respective crystals comprising one or more respective paramagnetic centers (NV), and wherein the respective purely optical sensor element (SE) of the one or more purely optical sensor elements (SE) emits a respective fluorescence radiation (FL) when irradiated with respective pump radiation (LB), which depends on the respective magnetic flux density B at the respective location of the respective purely optical sensor element (SE), and wherein the respective purely optical sensor element (SE) of the one or more purely optical sensor elements (SE) is positioned relative to the first line section such that a line current (I LTG) in the first section of the line (LTG) a magnetic field with a respective flux density B is generated at the respective location of the respective purely optical sensor element (SE), such that, at sufficient current strength, one or more respective paramagnetic centers (NV) of the respective purely optical sensor element (SE) influence the respective fluorescence radiation (FL) of these one or more respective paramagnetic centers (NV) of the respective purely optical sensor element (SE) in a specific respective way with respect to the respective purely optical sensor element (SE), characterized by that the purely optically controllable switching device has first respective means (LWL1, PL1, LIV) assigned to the respective purely optical sensor element (SE) for irradiating the one or more respective paramagnetic centers (NV) of the respective purely optical sensor element (SE) with respective pump radiation and that the purely optically controllable switching device second means (LWL2, F1, PD, LIV) which are assigned to the respective purely optical sensor element (SE), - for detecting and separating the respective fluorescence radiation (FL) of the one or more respective paramagnetic centers (NV) of the respective purely optical sensor element (SE) and - for the acquisition of a respective measurement signal, which depends on the respective intensity of the respective fluorescence radiation (FL) of the respective paramagnetic centers (NV1) of the respective purely optical sensor element (SE) and / or on the respective phase shift Δt of the respective modulation signal of the respective temporal course of the respective intensity of the respective fluorescence radiation (FL) of the respective paramagnetic centers (NV1) of the respective purely optical sensor element (SE) relative to the respective modulation signal of the respective temporal course of the respective intensity of the respective pump radiation (LB) irradiating the respective paramagnetic centers (NV1) of the respective purely optical sensor element (SE), or relative to a signal associated with this respective signal (e.g., respective transmit signal S5) and / or its respective temporal course, - wherein the respective first means and respective second means may comprise common respective device parts (LWL1, LWL2) relating to a respective purely optical sensor element (SE) individually and / or relating to several purely optical sensor elements (SE) depending on the application, and that the purely optically controllable switching device has third means (LIV) to generate an optical switching signal (SB) and to control the state of the optically controllable switch (T2) with this optical switching signal (SB) and that the optical switching signal (SB, SB') is derived from one or more respective intensities of one or more respective fluorescence radiation (FL, FL') of the respective paramagnetic centers (NV1, NV1') of one or more purely optical sensor elements (SE, SE') and / or from one or more respective phase shifts Δt of one or more respective modulation signals of one or more respective time profiles of one or more respective intensities of one or more respective fluorescence radiation (FL, FL') relative to one or more respective modulation signals of one or more respective time profiles of one or more respective intensities of one or more respective pump radiation (LB, LB') or relative to one or more respective signals associated with one or more respective signals (e.g.,depends on the transmission signals S5, S5') and / or their respective temporal progressions.

The invention discloses a high-quality sparse CT reconstruction method based on implicit learning and cross-domain feature mining, and relates to the technical field of CT image reconstruction, and the method comprises the following steps: S1, fault feature expression network construction and operation; s11, position coding is carried out; s12, fault feature mining; s121, carrying out cross-domain coordinate conversion; s122, fault feature representation: context visual feature extraction and curve morphological feature extraction; s2, implicit neural representation network processing; s21, fault feature information optimization based on MLP; s22, carrying out adaptive inverse transformation; s23, image reconstruction based on MLP is carried out; s3, self-supervised learning is carried out; according to the method, CT image reconstruction is achieved through implicit neural representation learning, the high-quality CT image is reconstructed on the premise that additional training data is not needed, the problem of artifacts in sparse view angle CT reconstruction can be effectively solved, the X-ray scanning frequency is greatly reduced while the image quality is guaranteed, and radiation exposure of a patient is reduced.

Disclosed is a method of correcting a measured spectrum for the effects of a source spectrum resulting from an illumination source. The method comprises obtaining a measured spectrum in terms of a measurement parameter, the measured spectrum being obtained from captured diffracted radiation from a periodic structure following illumination of said periodic structure using source radiation from said illumination source, the periodic structure being the spectrometer grating and an object being measured; determining an estimate of the source spectrum from the measured spectrum; and correcting the measured spectrum using the estimate of the source spectrum.

An information processing apparatus according to the present disclosure includes at least one processor, in which the processor is configured to: generate a difference image representing a difference between a low-energy image captured by irradiating a subject, in which a contrast agent is injected, with radiation having first energy and a high-energy image captured by irradiating the subject with radiation having second energy higher than the first energy; detect a lesion region including a lesion from each of the low-energy image and the difference image; perform a comparison determination of a position of the lesion region detected from the low-energy image and a position of the lesion region detected from the difference image; and output a comparison determination result.

The invention provides a training method of a CT and DSA real-time automatic fusion registration system for structural heart disease intervention and a storage medium. The training method comprises the following steps: establishing a registration system data set; establishing an initial registration system; based on the registration system data set, training an initial registration system to obtain a trained CT and DSA intraoperative registration system; and inputting the preoperative CT image data and the intraoperative real-time DSA image data of the person to be identified into the trained CT and DSA intraoperative registration system to obtain an intraoperative real-time fusion navigation image and intraoperative risk graphical prompt information. According to the method, cross-modal and cross-time-point dynamic registration can be realized, higher-precision intraoperative navigation support is provided for structural heart disease intervention, the operation safety is improved, and radiation exposure is reduced.

The invention relates to the technical field of medical image processing and interventional therapy assistance, and discloses an intubation fluorescent image feature learning system for hepatic artery chemoembolization. Comprising an image acquisition module which is configured to acquire a distortionless two-dimensional fluorescent blood vessel image in a hepatic artery chemoembolization super-selective intubation process; the control module is used for extracting surface geometric features of the blood vessel from the two-dimensional fluorescent blood vessel image; inputting the surface geometric features to a preset spatial reasoning model, and outputting a spatial distribution probability matrix of each blood vessel part; capturing a difference signal between the spatial distribution probability matrix and angiography feedback data in an actual intubation process in real time, and forming an iterative training data set to optimize the spatial reasoning model; and identifying a potential complex blood vessel region according to the spatial distribution probability matrix, generating an intubation path early warning signal, and generating guide parameters of X-ray release opportunity and dose based on the early warning signal so as to reduce radiation exposure.

A method for detecting aerosol particles in ambient air with a photoacoustic gas sensor, wherein an analysis volume is present in the beam path of a modulable emitter such that the emitter can use modulable radiation to excite aerosol particles in the analysis volume to form sound pressure waves which are detectable by means of the sensor. Using the modulable emitter, the analysis volume is irradiated with the modulated radiation to generate sound pressure waves. The generated sound pressure waves are measured by the sensor, whereby the presence and / or concentration of the aerosol particles in the ambient air is determined on the basis of the measurement results. In some embodiments, the aerosol particles are bioaerosols, such as pollen, spores, bacteria and viruses.

Calculating cord parameters of a textile reinforced rubber sheet moving in the machine direction includes: (a) illuminating an area on a side of the sheet with radiation; (b) obtaining a digital image of an illuminated area; (c) generating a digital image of the outer surface; and (d) calculating cord parameters. The elongated textile cords are preferably parallel to each other the elongated textile cords are orientated in a cross direction which is perpendicular to the machine direction. Scanning or static camera with a light source can be employed, wherein the light is directionally perpendicular to the plurality of cords. Cord count per unit length, cord spacing, the presence of missing cords, and / or the presence of shifted cords can be determined.

The invention relates to an optically controllable switch (T2) with a sensor element (SE). The sensor element (SE) comprises a carrier material (TM) with crystals and paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) that depends on the magnetic flux density B at the location of the sensor element (SE). A conduction current (I LTG ) in an inner line section (LTG +) generates a magnetic field with a flux density B such that, at sufficient current strength, the fluorescent radiation (FL) influences paramagnetic centers (NV1). Preferably, the optically controllable switch (T2) comprises a microelectronically manufactured semiconductor switch having the electronic switching component. Preferably, the respective sensor element (SE) is a respective microstructured sensor element (SE) on the surface of the microelectronically manufactured semiconductor switch and / or in the metallization stack of the microelectronically manufactured semiconductor switch.

The invention provides an imaging method, device and equipment of an interventional instrument. The imaging method comprises the following steps: acquiring a movement track and a current position of the interventional instrument in an interventional environment; according to the motion trail and the current position, a local scanning visual field area of the imaging equipment is determined, and the local scanning visual field area at least comprises an expected advancing path of the interventional instrument; and imaging the interventional instrument according to the local scanning view area to obtain a local image of the interventional instrument. The radiation quantity in the imaging process of the interventional instrument is reduced, and the imaging accuracy is improved.

A method of occluding a left atrial appendage (LAA) of a patient comprising: injecting a photocurable biomaterial into the LAA of the patient; and irradiating the photocurable biomaterial with actinic radiation, thereby inducing crosslinking of the photocurable biomaterial in situ in the LAA to form an interpenetrating network (IPN) or semi-interpenetrating network (sIPN) comprising a first network polymer and a second network polymer, wherein the first network polymer comprises a hydrophilic polymer; and wherein the second network polymer comprises a silicone rubber.

The invention discloses a low-dose computed tomography image denoising method and device based on self-supervised learning and a medium, and belongs to the technical field of medical image processing, aiming at solving the technical problem that the accuracy of clinical diagnosis is affected due to the fact that low X-ray dose is adopted by LDCT, and image quality is often interfered by noise. According to the method, denoising can be completed only by processing a single low-dose CT image by using a self-supervised learning framework. According to the method, the denoising mode is learned from the LDCT image containing noise, real ground truth is not needed, and the limitation that a traditional method depends on a real high-dose CT image to serve as training data is avoided. According to the method, the requirements of low-radiation exposure and high-quality imaging are balanced, the de-noising effect of the low-dose CT image can be remarkably improved, and the method is suitable for de-noising processing of the low-dose CT image in medical diagnosis.

A laser, electromagnetic wave and ray radiation irradiation device for a battery pole piece comprises an unwinding system, a winding system and a laser radiation irradiation system, and the battery pole piece is tensioned between the unwinding system and the winding system; the laser radiation irradiation system is used for outputting a laser beam of a Gaussian light spot and shaping the laser beam of the Gaussian light spot into a rectangular light spot to irradiate the battery pole piece so as to carry out laser, electromagnetic and ray radiation irradiation on the battery pole piece, so that microworld chemical reaction is carried out in the battery pole piece under the condition of illumination radiation; therefore, the required ideal state is achieved; wherein the number of the laser radiation irradiation systems is two, one laser radiation irradiation system is located on the A face side of the battery pole piece and used for conducting laser, electromagnetic wave and ray radiation irradiation on the A face of the battery pole piece, and the other laser radiation irradiation system is located on the B face side of the battery pole piece and used for conducting laser, electromagnetic wave and ray radiation irradiation on the B face of the battery pole piece.

A method for testing a packaging substrate with at least one electron beam column is described, wherein the packaging substrate is a panel level packaging substrate or an advanced packaging substrate. The method includes placing the packaging substrate on a stage in a vacuum chamber; directing at least one electron beam of the at least one electron beam column on at least a first portion of the packaging substrate; directing the at least one electron beam of the at least one electron beam column on at least a second portion of the packaging substrate; detecting signal electrons emitted upon impingement of the at least one electron beam for testing a first device-to-device electrical interconnect path of the packaging substrate; and illuminating at least a third portion of the packaging substrate with UV radiation.

The utility model is applicable to the field of nuclear waste treatment, and discloses a shielding device for high-radioactivity waste storage and transfer of a nuclear power plant, which comprises an outer barrel, a barrel cover, a hinge locking component and an inner barrel, the inner barrel is arranged in the outer barrel, the outer barrel is provided with an outer wall and an inner wall, the inner wall is fit with the inner barrel in shape, a radiation-proof material is filled between the inner wall and the outer wall, the outer wall is provided with a first lifting lug extending outwards, the barrel cover is arranged on the upper portion of the outer barrel, and a second lifting lug is arranged on the barrel cover. After radioactive waste is loaded into the inner barrel and the inner barrel is sealed, the inner barrel is then loaded into the outer barrel, the barrel cover and the outer barrel are locked through the hinge locking assembly, then an operator carries the outer barrel through connection of the first lifting lug and mechanical equipment, and when the barrel cover is opened and closed, the second lifting lug or a lifting appliance on the barrel cover can be selected according to an existing clamp and tool. The whole shielding device is simple in structure, the inner barrel, the outer barrel and the barrel cover are convenient and simple to install and carry, and the radiation time of operators is shortened.

The invention relates to an optically controllable switching device having a first and second line section, between which an optically controllable switch (T2) is inserted, and having a sensor element (SE). The optically controllable switch (T2) disconnects or connects depending on an optical switching signal (SB), whether the switch is "on" or "off". The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) which depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescent radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescent radiation (FL) and for detecting a measured value signal which depends on the intensity of the fluorescent radiation (FL) and / or on the phase shift of the modulation signal of the temporal profile of the intensity of the fluorescent radiation (FL). The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) and for controlling the state of the optically controllable switch (T2) using this optical switching signal (SB).The optical switching signal (SB) depends on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal course of the intensity of the fluorescence radiation (FL).

The present invention provides a flexible biopsy forceps with a hollow channel for real-time biopsy of lung lesions, comprising an insertion portion having a hollow channel capable of accommodating a medical device for image-guided imaging; a gripping portion disposed at the distal end of the insertion portion, comprising a first metal groove and a second metal groove capable of interlocking to form a space for accommodating a biopsy specimen, while forming an opening at the distal end to allow the medical device to pass through; an operating portion disposed at the proximal end of the insertion portion and connected to the gripping portion via a connecting device; the operating portion capable of driving the first and second metal grooves to pivot. The present invention can meet the needs of real-time lung biopsy under the guidance of radial bronchial ultrasound or confocal laser endoscopic probes, improve the diagnosis rate of peripheral lung lesions, avoid radiation exposure of medical workers and patients, and provide high-quality pathology / microbiology test samples for later treatment.