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7671342 |
Multi-layer detector and method for imaging
X-ray portal imaging detectors have multiple layers, such as multiple layers of phosphor screens and/or detectors. Some x-rays that pass through one layer are detected or converted into light...
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7672423 |
Short scan cardiac CT on a quasi axial trajectory
A short scan uses only data from about 180° gantry rotation instead of a full 360° turn. In the provided short scan cardiac CT, a periodical axial focal spot movement is performed during gantry...
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7653176 |
Inspection system with material identification
An angular analysis system that can be controlled to receive radiation at a defined angle from a defined focus region. The angular analysis system is used for level 2 inspection in an explosive...
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7623905 |
Method for production of computer-tomographic scans during an intervention
A method is disclosed for production of computer-tomographic scans via a CT system of a patient during an intervention with an instrument. An X-ray tube is moved on a rotation plane around the...
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7505553 |
Method for taking computed tomography scans with the aid of a CT unit, and a CT unit
A method is for taking computed tomography scans with the aid of a CT unit and to a CT unit. An X-ray tube is moved in a circle or spiral about a z-axis in combination with a detector situated...
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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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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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7305263 |
Magnetic navigation system and magnet system therefor
A magnetic navigation system for orienting a magnetically responsive medical device in a selected direction within an operating region in a subject's body. The system includes a support for...
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7260175 |
CT image producing method and X-ray CT apparatus
A method for producing a CT image by applying Z-filtering to axial scan data collected using a multi-row detector, wherein second axial scan data is collected at a second position Z 2 to which an...
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7139363 |
Oblique-view cone-beam CT system
An oblique-view cone-beam CT system comprising an X-ray source for irradiating an object with X-ray from an oblique direction with respect to a rotational axis of said object. A detector is...
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7110487 |
X-ray measuring apparatus
An x-ray measuring apparatus comprises an x-ray source, an x-ray detector, a rotating device, and a processor. The x-ray source generates x-rays to be emitted to a subject. The x-ray detector...
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7064336 |
Adaptable radiation monitoring system and method
A portable radioactive-material detection system capable of detecting radioactive sources moving at high speeds. The system has at least one radiation detector capable of detecting gamma-radiation...
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6956925 |
Methods and systems for multi-modality imaging
A method of examining a patient is provided. The method includes imaging a patient utilizing a computed tomography imaging modality, the patient between the pencil-beam x-ray source and the x-ray...
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6700949 |
Retractable collimator apparatus for a CT-PET system
An apparatus for use with a combined CT-PET system wherein a CT source and detector are mounted to a front end of a CT support and the support forms a parking space about a translation axis, a PET...
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6687393 |
Efficient methods and apparatus for resampling three dimensional datasets
In one form, the present invention is a method for rapidly resampling a three-dimensional volume of data to permit efficient interactive viewing and visualization of the data is provided in which a...
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6496557 |
Two-dimensional slot x-ray bone densitometry, radiography and tomography
An x-ray system using a slot-shaped detector having n rows and m columns of pixels, where n<<m, and providing a variety of relative motions between a patient table and a source-detector unit,...
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6429433 |
Continuous rotation sampling scheme for transmission radiation corrected gamma cameras
A continuous rotation sampling scheme for use with a nuclear medicine gamma camera facilitates collection of transmission and emission data leading to a reduced overall scan time. The gantry ( 16 )...
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6422749 |
Imaging system with X-ray beam angulation compensation
In an X-ray imaging system, an arrangement is provided for readily aligning the system detector with the X-ray beam field, i.e., the projection of the X-ray beam into the plane of the detector. The...
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6385279 |
Methods and apparatus for positioning a CT imaging x-ray beam
In one embodiment, the present invention is a method for positioning an x-ray beam on a multi-slice detector array of an imaging system in which the detector array has rows of detector elements and...
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6322248 |
X-ray impinging position alignment method and x-ray tomographic imaging method and apparatus
In order to make an X-ray impinging position coincide with a fixed position from the beginning of a scan, in scanning a subject to be examined by an X-ray emitting/detecting apparatus, an X-ray...
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6272199 |
Computer tomography apparatus
A CT apparatus with alternating focus, in which the detector elements deliver output data when picking up individual projections corresponding to the beam attenuation of the X-rays proceeding to...
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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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6196715 |
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...
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6185275 |
Systems and methods for correcting focal spot thermal drift
The present invention, in one form, is a system for correcting thermal drift in an imaging system. More specifically, a correction algorithm determines an adjusted focal spot position based upon a...
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6005908 |
X-ray computed tomography apparatus with radiation detector which reduces image unsharpness
An X-ray computed tomography apparatus has a radiation detector composed of X-ray converters so that the scattering of light in a scintillator or the inductive disturbance in a directly converting...
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RE36099 |
X-ray tomography apparatus
Accordingly, the present invention provides an x-ray tomography apparatus having a patient table, x-ray tomography components located around the patient table and in an imaginary plane which...
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5841829 |
Optimal channel filter for CT system with wobbling focal spot
An improved data acquisition system filter, optimized for the time domain and for use in a computed tomography scanner of the type using x-ray focal spot wobble, includes a filter time response...
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5740224 |
Cone beam synthetic arrays in three-dimensional computerized tomography
The method of the present invention combines an ensemble of truncated partial cone beam projections to synthesize a complete virtual projection. The individual partial projections are obtained with...
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5706326 |
Systems and methods of determining focal spot x-axis position from projection data
The present invention, in one form, is a method of determining focal spot position in a computed tomography system using conventional scan data. The computed tomography system includes, in one...
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5680430 |
Method and apparatus for controlling and optimizing output of an x-ray source
A method for controlling output of an x-ray source to optimize x-ray energy arriving at an associated x-ray receptor during linear tomographic examination. The method comprises the steps of...
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5648996 |
Tangential computerized tomography scanner
A tangential computer tomography scanner for scanning an object having a cross-section. A radiation source emits a beam of penetrating energy. The beam penetrates an object located within the beam...
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5475726 |
Process for the reconstruction of three-dimensional images of an area of interest of an object comprising the combination of measurements over the entire object with measurements of an area of interest of said object, and appropriate installation
Process and installation making it possible to reconstitute precise images of an area of interest (2) of an object (1) by reducing the errors produced by the contribution of the compliment of the...
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5452337 |
Radiation diagnostic system
A rotational drive sensor 31 which allows a radiation source 10 and a twomensional sensor 20 which are caused to be in one body to turn round a subject 50. An X-ray vessel 13 irradiates X-rays to...
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5265142 |
Image reconstruction technique for a computer tomography system
A computed tomography apparatus includes a gantry rotatable about an object being imaged, an X-ray source mounted on said gantry in opposing relationship to an array of X-ray detectors. An X-ray...
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5228069 |
Dual slice scanner
A CT scanner using a rotate-rotate mode wherein the detector is designed to simultaneously detect X-rays that have traversed multiple-planar sections in a patient being scanned.
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5191600 |
X-ray computer tomography system with split detector ring
An X-ray computer tomography system with a ring anode and substantially without mechanically moving parts for the production of fast image slices from the inside of an object is improved in such a...
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5073910 |
Square wave cone beam scanning trajectory for data completeness in three-dimensional computerized tomography
A configuration for three-dimensional cone beam computerized tomography imaging which allows a complete data set to be acquired in a practical manner, while providing fast data acquisition to...
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5068882 |
Dual parallel cone beam circular scanning trajectories for reduced data incompleteness in three-dimensional computerized tomography
A configuration of three-dimensional cone beam computerized tomography imaging which minimizes the incompleteness of the data set acquired, while providing fast data acquisition to minimize motion...
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5052036 |
X-ray stand with laterally inclined rotation axis
An X-ray stand includes a fixture attached to the ceiling surface floor surface or side wall surface of a hospital room. A support is connected to the fixture with a rotary bearing connected to a...
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5029192 |
Computer tomography apparatus with detector which is rotatable separately from the x-ray source
A computer tomography apparatus has an x-ray source which emits a fan-shaped x-ray beam which irradiates a slice of an examination subject. The x-ray source is rotatable around the examination...
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5027378 |
Industrial computed tomography apparatus
An industrial CT apparatus capable of obtaining a good image quality by a simple configuration. The apparatus is the second generating type incorporating the rotational motions as well as the...
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5014293 |
Computerized tomographic x-ray scanner system and gantry assembly
A scanner assembly having a C-shaped gantry rotatably supported by a support head. An x-ray source and a detector assembly are mounted on said gantry for independent movement with respect to one...
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4985907 |
Dental X-ray apparatus for panoramic tomography
Dental X-ray apparatus for panoramic tomography in which an X-ray source and X-ray detection means are carried by a moving mechanism for panoramic imaging movements including translation and...
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4934832 |
Computer tomography apparatus with resiliently mounted radiation detector
A computer tomograph apparatus of the type having a rotating frame which carriers an x-ray source and a radiation detector includes a mount for the radiation detector which resiliently seats the...
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4907157 |
Method and system for allowing imaging of any size object through use of separate source and detector unit
A tomographic apparatus includes a movable radiation generating system and a movable radiation sensing system which may be placed independently of the location of the radiation generating system....
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4837792 |
Computer tomography apparatus
A computer tomography apparatus has an x-ray source which is fed with a high voltage supply. Operation of the x-ray source over an extended period of time causes the focal spot on the anode to...
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4694399 |
Process of image reconstruction by tomodensitometry with improved spatial resolution
In a tomodensitometric image reconstruction process the detectors 11 of the tomodensitometer are offset by Δd/4 (Δd being the pitch of the detectors), and reconstruction is performed during one...
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4691332 |
High energy computed tomography
Computerized axial tomography is employed with respect to large relatively dense objects such as a solid fuel rocket engine. High energy X-rays, such as a 15 MeV source is used. To develop clean...
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4669103 |
CT scanner with rotatable fan beam and non-rotatable detector ring
A CT scanner has an X-ray source for producing a fan beam that is rotatable relative to the axis of the scanner in a plane perpendicular to the axis, and a plurality of X-ray detectors mounted in a...
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4608635 |
Method and apparatus for tomographic diagnosis
A computer-assisted tomographic image is overlayed with the visual indication of any regions representing a deviation from a norm. The overlaid region may indicate a deviation of the radiodensity...
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