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11941results about "Material analysis by transmitting radiation" patented technology

Method for detecting transverse mode vibrations in an ultrasonic hand piece/blade

A method for detecting transverse mode vibrations in an ultrasonic hand piece / blade for determining the existence of unwanted vibration in the hand piece / blade. A tracking filter centered at the drive frequency of the generator, is used to monitor the drive frequency of the ultrasonic generator and attenuate the drive signal when it exceeds a predetermined level. The tracking filter has a wide pass band. Alternatively, a tracking filter having a pass band which is divided into several regions is used to avoid other longitudinal resonances, such as a resonance at a second harmonic, or other spectral features that would otherwise detract from the tracking accuracy of the filter.
Owner:ETHICON ENDO SURGERY INC

System and method for building and manipulating a centralized measurement value database

A system and method for building and / or manipulating a centralized medical image quantitative information database aid in diagnosing diseases, identifying prevalence of diseases, and analyzing market penetration data and efficacy of different drugs. In one embodiment, the diseases are bone-related, such as osteoporosis and osteoarthritis. Subjects' medical images, personal and treatment information are obtained at information collection terminals, for example, at medical and / or dental facilities, and are transferred to a central database, either directly or through a system server. Quantitative information is derived from the medical images, and stored in a central database, associated with subjects' personal and treatment information. Authorized users, such as medical officials and / or pharmaceutical companies, can access the database, either directly or through the central server, to diagnose diseases and perform statistical analysis on the stored data. Decisions can be made regarding marketing of drugs for treating the diseases in question, based on analysis of efficacy, market penetration, and performance of competitive drugs.
Owner:IMAGING THERAPEUTICS +1

Fluoroscopic tracking and visualization system

A system for surgical imaging and display of tissue structures of a patient, including a display and an image processor for displaying such images in coordination with a tool image to facilitate manipulation of the tool during the surgical procedure. The system is configured for use with a fluoroscope such that at least one image in the display is derived from the fluoroscope at the time of surgery. A fixture is affixed to an imaging side of the fluoroscope for providing patterns of an of array markers that are imaged in each fluoroscope image. A tracking assembly having a plurality of tracking elements is operative to determine positions of said fixture and the patient. One of the tracking elements is secured against motion with respect to the fixture so that determining a position of the tracking element determines a position of all the markers in a single measurement.
Owner:STRYKER EURO HLDG I LLC +1

X-ray diagnostic system preferable to two dimensional x-ray detection

An X-ray tomosynthesis system as an X-ray diagnostic system is provided. The system comprises an X-ray generator irradiating an X-ray toward a subject, and a planar-type X-ray detector detecting the X-ray passing through the subject and outputting two dimensional imaging signals based on the detected X-ray. The system comprises a supporting / moving mechanism supporting at least one of the X-ray generator and the X-ray detector so that the at least one is moved relatively to the subject. The system also comprises an element setting a ROI position of the subject, an element for obtaining a plurality of three dimensional coordinates of pixels included in the ROI, a calculating element obtaining two dimensional coordinates of data in the two dimensional imaging signals for each of the two dimensional imaging signals detected by the X-ray detector, the data being necessary for obtaining pixel values of the three dimensional coordinates; and an element for obtaining the pixel value of each of the three dimensional coordinates by extracting the corresponding data of the two dimensional coordinates from the detected two dimensional imaging signals and adding the extracting data.
Owner:KK TOSHIBA

Systems and methods for quasi-simultaneous multi-planar x-ray imaging

Systems and methods for obtaining two-dimensional images of an object, such as a patient, in multiple projection planes. In one aspect, the invention advantageously permits quasi-simultaneous image acquisition from multiple projection planes using a single radiation source.An imaging apparatus comprises a gantry having a central opening for positioning an object to be imaged, a source of radiation that is rotatable around the interior of the gantry ring and which is adapted to project radiation onto said object from a plurality of different projection angles; and a detector system adapted to detect the radiation at each projection angle to acquire object images from multiple projection planes in a quasi-simultaneous manner. The gantry can be a substantially “O-shaped” ring, with the source rotatable 360 degrees around the interior of the ring. The source can be an x-ray source, and the imaging apparatus can be used for medical x-ray imaging. The detector array can be a two-dimensional detector, preferably a digital detector.
Owner:MEDTRONIC NAVIGATION INC

Method of and device for position detection in X-ray imaging

The invention relates to a method of position detection in X-ray imaging, and to a device for carrying out such a method by means of an X-ray apparatus, a detector device, including at least two detector elements, and an indicator device. The exact association of the X-ray image with the object imaged is very important notably for intraoperative imaging. Exact knowledge of the position and orientation of the components of the X-ray apparatus associated with the imaging system is required for this purpose. However, it is often problematic that the lines of sight of the position measuring system are obscured by attending staff or other apparatus. Therefore, in the device according to the invention the detector device is mounted on the X-ray apparatus and the indicator device is provided so as to be stationary on the object to be examined or stationary relative to the object to be examined. Also described is a method of position detection in X-ray imaging by means of such a device.
Owner:U S PHILIPS CORP

Fluoroscopic tracking and visualization system

A method for surgical imaging and display including (i.) positioning a defined set of markers disposed in a pattern so as to be imaged in each pose or view of an imaging assembly, the set of markers being fixed in pre-determined positions in a rigid carrier, (ii.) securing a first tracking element against motion with respect to the rigid carrier so that determining a position of the first tracking element in a single measurement determines positions of all the markers of the set, and (iii.) identifying images of at least a subset of the markers in a first view.
Owner:STRYKER EURO HLDG I LLC +1

Multifocal imaging systems and method

In the systems and methods of the present invention a multifocal multiphoton imaging system has a signal to noise ratio (SNR) that is reduced by over an order of magnitude at imaging depth equal to twice the mean free path scattering length of the specimen. An MMM system based on an area detector such as a multianode photomultiplier tube (MAPMT) that is optimized for high-speed tissue imaging. The specimen is raster-scanned with an array of excitation light beams. The emission photons from the array of excitation foci are collected simultaneously by a MAPMT and the signals from each anode are detected using high sensitivity, low noise single photon counting circuits. An image is formed by the temporal encoding of the integrated signal with a raster scanning pattern. A deconvolution procedure taking account of the spatial distribution and the raster temporal encoding of collected photons can be used to improve decay coefficient. We demonstrate MAPMT-based MMM can provide significantly better contrast than CCD-based existing systems.
Owner:MASSACHUSETTS INST OF TECH

Enhanced X-ray imaging system and method

Techniques are provided for generating three-dimensional images, such as may be used in mammography. In accordance with these techniques, projection images of an object of interest are acquired from different locations, such as by moving an X-ray source along an arbitrary imaging trajectory between emissions or by individually activating different X-ray sources located at different locations relative to the object of interest. The projection images may be reconstructed to generate a three-dimensional dataset representative of the object from which one or more volumes may be selected for visualization and display. Additional processing steps may occur throughout the image chain, such as for pre-processing the projection images or post-processing the three-dimensional dataset.
Owner:GENERAL ELECTRIC CO

Generation and distribution of annotation overlays of digital X-ray images for security systems

An image display storage and retrieval system provides a mechanism to transmit x-ray images of parcels to one or more remote workstations. The images may be annotated at these workstations to specifically identify articles to be targeted for more thorough investigation. The image display storage and retrieval system comprises an x-ray image source to illuminate a parcel with x-rays, scan the received x-ray pattern produced from the x-rays passing through the parcel, and digitize the x-ray image of the parcel, an initial screening station where images are initially received and may be annotated, an inspection station where the images (with or without annotation) and parcels to be inspected are received, an optional parcel path switch to direct parcels to either a clearance station or an inspection station, a data storage and retrieval device to record and retrieve images, a data processor to receive the images and a data network connecting the initial screening station, the inspection station, the optional path switch, the data storage and retrieval device and the data processor so as to enable the exchange of data.
Owner:RAPISCAN SYST INC (US)

X-ray inspection system for detecting explosives and other contraband

InactiveUS7092485B2Rapidly and accurately discriminates among different substancesQuick checkUsing wave/particle radiation meansMaterial analysis by transmitting radiationX-rayExplosive material
A baggage scanning system and method employ combined angular and energy dispersive x-ray scanning to detect the presence of a contraband substance within an interrogation volume of a baggage item. The interrogation volume is illuminated with penetrating, polychromatic x-rays in a primary fan beam from a source such as a tungsten-anode x-ray tube. An energy-dependent absorption correction is determined from measurement of the attenuation of the fan beam at a plurality of different energies. Radiation coherently scattered by substances in the interrogation volume is detected by an energy-resolved x-ray detector operated at a plurality of scattering angles to form a plurality of scattering spectra. Each scattering spectrum is corrected for energy-dependent absorption and the corrected spectra are combined to produce a scattering pattern. The experimental scattering pattern is compared with reference patterns that uniquely characterize known contraband substances. The system and method can locate and identify a wide variety of contraband substances in an accurate, reliable manner. The system provides for automated screening, with the result that vagaries of human performance are virtually eliminated. False alarms and the need for hand inspection are reduced and detection efficacy is increased.
Owner:CONTROL SCREENING

Self-contained, portable inspection system and method

InactiveUS6843599B2Rapidly deployableCost-effectively and accurately on uneven surfaceX-ray apparatusMaterial analysis by transmitting radiationComputer moduleEngineering
The inspection methods and systems of the present invention are mobile, deployable, and capable of scanning a wide variety of receptacles cost-effectively and accurately on uneven surfaces. The inspection system comprises an inspection module that, in a preferred embodiment, is in the form of a mobile trailer capable of being towed and transported to its intended operating site with the help of a tug-vehicle. The tug-vehicle preferably includes at least one source of electromagnetic radiation, a hydraulic lift system to load and unload the radiation source, and at least one radiation shield plate positioned on the back of the driver cabin of the tug-vehicle.
Owner:RAPISCAN SYST INC (US)

Radiation scanning of objects for contraband

A scanning unit for identifying contraband within objects, such as cargo containers and luggage, moving through the unit along a first path comprises at least one source of a beam of radiation movable across a second path that is transverse to the first path and extends partially around the first path. A stationary detector transverse to the first path also extends partially around the first path, positioned to detect radiation transmitted through the object during scanning. In one example, a plurality of movable X-ray sources are supported by a semi-circular rail perpendicular to the first path and the detector, which may be a detector array is also semi-circular and perpendicular to the path. A fan beam may also be used. Radiographic images may be obtained and / or computed tomography (“CT”) images may be reconstructed. The images may be analyzed for contraband. Methods of scanning objects are also disclosed.
Owner:VAREX IMAGING CORP

Detection and identification of threats hidden inside cargo shipments

A method for identifying at least one threat to the homeland security. Each threat is either hidden inside at least one cargo container before transit, or is placed inside at least one cargo container while in transit. Each threat while interacting with its surrounding generates a unique threat signature.The method comprises the following steps: (A) detecting at least one threat signature; and (B) processing each detected threat signature to determine a likelihood of at least one threat to become a threat to the homeland security.
Owner:ERUDITE

Image guided radiosurgery method and apparatus using registration of 2D radiographic images with digitally reconstructed radiographs of 3D scan data

An image-guided radiosurgery method and system are presented that use 2D / 3D image registration to keep the radiosurgical beams properly focused onto a treatment target. A pre-treatment 3D scan of the target is generated at or near treatment planning time. A set of 2D DRRs are generated, based on the pre-treatment 3D scan. At least one 2D x-ray image of the target is generated in near real time during treatment. The DRRs are registered with the x-ray images, by computing a set of 3D transformation parameters that represent the change in target position between the 3D scan and the x-ray images. The relative position of the radiosurgical beams and the target is continuously adjusted in near real time in accordance with the 3D transformation parameters. A hierarchical and iterative 2D / 3D registration algorithm is used, in which the transformation parameters that are in-plane with respect to the image plane of the x-ray images are computed separately from the out-of-plane transformation parameters.
Owner:ACCURAY

Vehicle-carried mobile container inspection apparatus

A vehicle-carried mobile container inspection apparatus characterized in that the mobile container inspection apparatus comprises a first box-shaped cabin arranged in the front portion of the chassis and provided with a workroom accommodating a scan control module, an image acquisition module and an operation / inspection module; and a second box-shaped cabin and a third box-shaped cabin both arranged on the rear portion of the rotatable platform, in which the second box-shaped cabin is arranged on the top of the third box-shaped cabin, the control unit of the radiation source is accommodated in the second box-shaped cabin, the third box-shaped cabin is arranged under the rotatable platform, the radiation source is arranged in the third box-shaped cabin, the level of the radiation source from which the X-ray beam emit is arranged below the level of the chassis, the scanning vehicle is provided with a driving means to smoothly move the scanning vehicle the rotatable platform is provided with a rotatably driving means, when inspecting a container, the rotatable platform is driven to turn 90 degrees, and the second arm turns into its vertical gesture, so that a portal-shaped frame is formed by means of the parallelogrammical bracket, the first arm and the second arm. The mobile inspection container apparatus is capable of inspecting as broad area as to reach the vehicle chassis. The apparatus comprises two vehicles, in which usually the both vehicles are used, while only one vehicle is used for fulfilling the inspection work in emergency.
Owner:TSINGHUA UNIV +1

X-ray ambient level safety system

A method for modulating the intensity of an x-ray beam in an x-ray inspection system so as to maintain the highest penetration power and optimum image quality subject to keeping the ambient radiation generated by the x-rays below a specified standard.
Owner:SILICON VALLEY BANK

Service unit for an X-ray examining device

Disclosed is a uniquely identifiable identification system incorporated into an X-ray testing apparatus or into this system, so that each operator (6) can log onto the operating system only with his or her own individual identification (4, 4.1). The identification (4, 4.1) is read and optionally rewritten by a counterpart device (3, 3.1) of the identification system. Upon leaving the operating system, the operator (6) is automatically logged off by way of removing the identification device (4, 4.1), or by way of exiting from a defined local area (N) around the X-ray testing apparatus, and the operating system is then ready for access by another operator (6).
Owner:SMITHS HEIMANN

Mmw contraband screening system

An inspection system that can detect contraband items concealed on, in or beneath an individual's clothing. The system employs mm wave radiation to detect contraband items. The system is described in connection with a check point security system that includes temperature controlled walls to enhance imaging of contraband items. Also, a mm wave camera is used in conjunction with a camera that forms visible images. To address privacy concerns of displaying images of people made with mm wave cameras that effectively “see through” clothes, the mm wave images are not displayed directly. Rather, computer processing produces indications of suspicious items from the underlying raw mm wave images. The indications of suspicious items are overlaid on the visible image.
Owner:L3 COMMUNICATIONS SECURITY & DETECTION SYSTEMS CORPORATION

Container inspection apparatus

A relocatable container inspection device, which is constituted by modularized units, is used for inspecting a container. The device comprises: a first cabin unit including a radiation source for generating a beam of penetration radiation for penetrating the container to be inspected; a second cabin unit including detectors for detecting the beam of penetration radiation penetrating through the container being inspected and producing corresponding radiographic signals, the second cabin unit and the first cabin unit being arranged oppositely in both sides of an inspection passage; a gantry unit bridging the first cabin unit and the second cabin unit to form a portal-shaped frame adapted for straddling the container being inspected; means for moving the frame relative to the container being inspected along the inspection passage, so that the detectors receive the beam of the penetration radiation generated from the radiation resource and passing through the container being inspected, thereby continuously scanning the container and producing the corresponding radiographic signals, wherein the first cabin unit, the second cabin unit and the gantry unit are all individually made as modular units so as to be quickly and easily assembled and disassembled with each other on the inspection site. In the present invention, all of the modularized units of the container inspection device can be easily assembled and disassembled in the work field, and the dimensions of each modular unit are sized to be suitable for road transports and to be facilitate for the device's movement.
Owner:TSINGHUA UNIV +1
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