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7616731 |
Acquisition and reconstruction of projection data using a stationary CT geometry
Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed...
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7580500 |
Computer tomography system having a ring-shaped stationary X-ray source enclosing a measuring field
A computer tomograph ( 1 ) that comprises at least a stationary electron source for generating an electron beam ( 13 ), a ring-shaped, stationary X-ray source with a largely ring-shaped target ( 14...
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7558374 |
System and method for generating X-rays
A system and method for generating X-rays comprising a waveguide having a cavity extending therethrough, a first sidewall, and a second sidewall opposite the first sidewall, the second sidewall...
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7551710 |
X-ray CT apparatus and X-ray CT imaging method
An X-ray CT apparatus includes a unit for transmitting an X-ray at not less than two different heights of a measurement object and obtaining a given CT image. Alternatively, the X-ray CT apparatus...
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7535988 |
Method for fast image reconstruction with compact radiation source and detector arrangement using computerized tomography
This invention presents a method of image reconstruction based on static and irregular detector positioning using fan-beam back projection technique of computerized tomography.
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7512215 |
X-ray tube electron sources
An X-ray tube includes an emitter wire ( 18 ) enclosed in a suppressor( 14, 16 ). An extraction grid comprises a number of parallel wires ( 20 ) extending perpendicular to the emitter wire, and a...
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7499522 |
Cargo security inspection system and method
A cargo security inspection system inspecting an object moving through the system, including: a mechanical conveyance unit carrying, conveying, and defining a travel path of the object in the...
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7493001 |
Waveguide-based detector module for x-radiation or gamma radiation
A detector module, in at least one embodiment, is disclosed for x-radiation or gamma radiation that includes one or more optical waveguide sections that are arranged next to one another in order to...
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7492855 |
System and method for detecting an object
A system and method for ascertaining the identity of an object within an enclosed article. The system includes an acquisition subsystem utilizing a stationary radiation source and detector, a...
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7468513 |
Fast dynamic imaging protocol using a multi-head single photon emission computed tomography system
An imaging system for acquiring multi-dimensional tomographic image data of an object, the imaging system having (1) a plurality of detectors to acquire image data, the detectors coupled to a...
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7440543 |
X-ray monitoring
Apparatus for monitoring in real time the movement of a plurality of substances in a mixture, such as oil water and air flowing through a pipe ( 24 ), comprises an X-ray scanner ( 8 ) arranged to...
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7428297 |
Methods and apparatus for e-beam scanning
In one aspect, an x-ray scanning device is provided. The x-ray scanning device comprises a target adapted to convert electron-beam (e-beam) energy into x-ray energy, a detector array positioned to...
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7340029 |
X-ray computed tomography apparatus for fast image acquisition
An x-ray computed tomography apparatus has a stationary device ( 3 ) for generating x-ray radiation from an x-ray focus that moves around the examination volume on a target that at least partially...
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7335888 |
Imaging apparatus to acquire tomography projections with improved orbit
The present invention relates to an apparatus for nuclear medicine imaging in which the imaging platform is attached directly to the detectors for nuclear imaging to allow for minimal constant...
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7333588 |
Virtual spherical anode computed tomography
An x-ray computed tomography system uses a broad area x-ray emitter and detector to allow both in plane and out of plane x-ray projections not restrained to spiral or helical scans.
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7324626 |
Volumetric imaging on a radiotherapy apparatus
Volumetric imaging on a radiotherapy apparatus, wherein a body, of which a volumetric image data set is to be produced, is positioned on a couch of the radiotherapy apparatus, and the couch or a...
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7310404 |
Radiation CT radiographing device, radiation CT radiographing system, and radiation CT radiographing method using the same
An object rotating type cone beam radiation CT radiographing device in which a high speed and high sensitivity are obtained with low costs is provided. Thus, a radiation CT device of high...
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7295651 |
Stationary computed tomography system and method
A radiographic imaging system is presented. The system includes a system controller and a plurality of sub-system controllers. Each sub-system controller is configured to facilitate generation of a...
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7281850 |
Method and apparatus for aligning a fourth generation computed tomography system
A method and apparatus for the alignment of a fourth generation Computed Tomography (CT) system is provided. The method includes receiving X-ray scan data from the CT system, and processing the...
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7280631 |
Stationary computed tomography system and method
Configurations for stationary imaging systems are provided. The configurations may include combinations of various types of distributed sources of X-ray radiation, which generally include...
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7257190 |
Radiographic device and control method therefor
A radiographic device includes a radiation source which generates radiation and a detector which detects radiation from the radiation source on a two-dimensional plane and outputs an image signal,...
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7227924 |
Computed tomography scanning system and method using a field emission x-ray source
Computed tomography scanning systems and methods using a field emission x-ray source are disclosed. An exemplary micro-computed tomography scanner comprises a micro-focus field emission x-ray...
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7218700 |
System for forming x-rays and method for using same
A system and method for forming x-rays. One exemplary system includes a target and electron emission subsystem with a plurality of electron sources. Each of the plurality of electron sources is...
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7170966 |
Practical implementation of a CT cone beam algorithm for 3-D image reconstruction as applied to nondestructive inspection of baggage, live laboratory animal and any solid materials
This invention uses the cone beam CT (Computer Tomography) principle to obtain nondestructive image of any object. For good reconstruction datasets from 2 orthogonal planes about the object are...
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7082182 |
Computed tomography system for imaging of human and small animal
Computed tomography device comprising an x-ray source and an x-ray detecting unit. The x-ray source comprises a cathode with a plurality of individually programmable electron emitting units that...
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7068749 |
Stationary computed tomography system with compact x ray source assembly
A stationary CT system comprising at least one annular x ray source assembly comprising a plurality of respective x ray sources spaced along the annular x ray source assembly. Each of the x ray...
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7020511 |
Method for three dimensional cine EBA/CTA imaging
Certain embodiments of the present invention provide a method for three-dimensional cine EBA/CTA imaging. The method includes monitoring a cardiac cycle of a patient and selecting a trigger point...
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7020232 |
Electron beam computed tomographic scanner system with helical or tilted target, collimator and detector components to eliminate cone beam error and to scan continuously moving objects
A scanning electron beam computed tomographic system eliminates axial offset between target and detector by disposing the target, collimator, and detector such that active portions of the target...
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6952466 |
Oil-free electron source for an EBT scanner
An oil-free electron source including a vacuum chamber within which a vacuum is maintained. A rigid insulated receptacle and an anode extend into the vacuum chamber and are mounted to opposite ends...
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6920195 |
Radiographic image forming apparatus and radiographic image forming method
A radiographic image forming apparatus having a radiation source for irradiating conical radiation to a test body; a stimulable phosphor plate, arranged opposite to the radiation source with the...
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6907110 |
X-ray tube with ring anode, and system employing same
An x-ray tube has a stationary vacuum housing, in which are arranged an electron-emitting cathode and a ring anode with an impact surface on which the electron beam, accelerated by an electrical...
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6873677 |
Method and device for improving time resolution of an imaging device
The present invention provides methods and devices which improve a time resolution of a scanner by segmenting the data and generating a plurality of low resolution images. The low resolution images...
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6807248 |
Multisource type X-ray CT apparatus
A multisource type X-ray CT apparatus including a fixed sensor array, a fixed vacuum chamber, and an X-ray generation unit. The X-ray generation unit includes a cathode and an anode which are fixed...
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6757354 |
Multi-view x-ray imaging of logs
A method and apparatus is disclosed for mapping the relevant material properties of a log, such as knot location and extent. The outer shape of the log under bark is also revealed using this...
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6687332 |
Method and apparatus for patient-in-place measurement and real-time control of beam-spot position and shape in a scanning electron beam computed tomographic system
A scanning electron beam computed tomographic system is provided with a sub-collimation system that passes X-rays emitted by a beam spot formed by an electron beam that is scanned across an X-ray...
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6670625 |
Method and apparatus for correcting multipole aberrations of an electron beam in an EBT scanner
A method and apparatus are disclosed for reducing variation in a spot size of an electron beam at a target due to multipole aberrations in an electron beam tomography (EBT) scanner. A magnitude of...
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6628745 |
Imaging with digital tomography and a rapidly moving x-ray source
A digital tomography system includes an electron source that provides a beam of electrons, and an electromagnet assembly that receives said beam of electrons and is configured and arranged to...
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6483890 |
Digital x-ray imaging apparatus with a multiple position irradiation source and improved spatial resolution
The origin of a cone or fan beam of B, γ, or x radiation is moved in a continuous path such as a circle or is stepped among a two-dimensional grid of preselected points. The cone beam of radiation...
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6470068 |
X-ray computer tomography scanning system
An X-ray computer tomography scanning system for imaging the internal structure of a human being including a source that projects a substantially conically shaped X-ray beam along a path on to a...
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6341153 |
System and method for portable nondestructive examination with realtime three-dimensional tomography
A system and method for non-destructive examination of parts using three-dimensional CT imagery. The system comprises a computer controlled x-ray source, a scintillator screen, and an amorphous...
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6252925 |
System and method for performing computed tomography with fiber waveguides
A system and method for performing computed tomography without having to use a complicated mechanical device to move an x-ray source about an object being scanned. Instead, this invention uses...
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6233305 |
Method, apparatus and their use in tomographic imaging
A method of producing complex motion or spiral tomography images in tomographic imaging, comprising the steps of positioning an object to be imaged in a fixed position, arranging a radiation source...
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6181765 |
X-ray tube assembly
An X-ray tube assembly includes a hermetically-sealed annular frame, spaced apart cathode and anode rings and an electron excitation device. The frame surrounds an exterior central passage for...
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6173033 |
X-ray computed tomography apparatus for producing X-ray shadowgraphs
An X-ray computed tomography apparatus having a two-dimensional detector allows X-ray shadowgraphs to be alternatively produced with using one or several detector rows. For this purpose, a slot...
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6160869 |
Chicane magnet focusing system and deflection magnet for a scanning electron beam computed tomography system
Tuning, integrating, and operating an electron beam CT scanning system is simplified by using the fringe field from dipole magnets arranged as a chicane to focus the electron beam, thus replacing...
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6148058 |
System and method for real time measurement of detector offset in rotating-patient CT scanner
A rotating-patient computed tomography scanning system in which the detector offset is measured in real time for each scan. At least one x-ray--absorbent reference structure is disposed in the...
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6130929 |
Method for eliminating artifacts in scanning electron beam computed tomographic images due to cone beam geometry
Computed tomographic ("CT") x-ray scanning yields a discrete set of measurement values that are line integrals of attenuation coefficients μ(r), which attenuation coefficients may be obtained...
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6104776 |
Nondestructive test apparatus
A nondestructive test apparatus for testing a work is formed of a fixed radiation generating device; a rotatable work holding device situated near the radiation generating device; and a rotatable...
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6009141 |
X-ray computed tomography apparatus with electronic scanning of a ring-shaped anode
An x-ray computed tomography apparatus with electronic scanning of a ring-shaped anode has a solenoid coil for space-charge compensation which allows access to the anode. The solenoid coil is...
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5995586 |
X-ray generator
An x-ray generator has a beam guidance system including an air coil and a toroidal solenoid coil, a ring anode surrounding the patient to be examined and arranged axially offset relative to the...
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