|
Match
|
Document |
Document Title |
|
|
7872241 |
Method and apparatus for production and maintenance of electron beam space-charge neutralization
An electron beam production and control assembly includes a vacuum chamber, a beam source, and a target. The target has an active section and an inactive section. The active section is adapted to...
|
|
|
7839967 |
Electron computer tomography method and electron computer tomograph
There is provided an electron computer tomography method for recording a moving object (27), in which an electron beam is deflected onto an anode arc (14) in order to generate X-ray radiation which...
|
|
|
7366280 |
Integrated arc anode x-ray source for a computed tomography system
An imaging system includes a gantry rotating around an object on a table. A cathode emitter is coupled to the gantry and generates an electron beam. An anode, also coupled to the gantry, is...
|
|
|
7317785 |
System and method for X-ray spot control
The present technique provides a method for controlling an electron beam (e-beam) in an X-ray tube. The method comprises emitting electrons from an electron source to form the e-beam, accelerating...
|
|
|
7305063 |
Cylindrical x-ray tube for computed tomography imaging
A computed tomography imaging system includes an x ray tube (12, 212) that injects an x ray conebeam into an examination region (14). The x ray tube (12, 212) includes a rotating cylindrical anode...
|
|
|
7145981 |
Volumetric computed tomography (VCT)
The present invention provides a volumetric computed tomography (VCT) system capable of producing data for reconstructing an entire three-dimensional (3D) image of a subject during a single...
|
|
|
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...
|
|
|
6842499 |
Method and apparatus for connecting temporally separated sinograms in an EBT scanner
A method and apparatus are disclosed in an EBT scanner for generating an image from a data set collected from a subject beginning at an arbitrary time within a scanning time interval. A sequence of...
|
|
|
6701000 |
Solution to detector lag problem in a solid state detector
The present invention, in one form, includes a digital x-ray imaging system which, in one embodiment, collects projection data from a plurality of views and reduces artifacts caused by detector...
|
|
|
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...
|
|
|
6404841 |
Image thickness selection for multislice imaging system
Scalable multislice systems which, in one embodiment, includes a scalable multislice detector, a scalable data acquisition system (SDAS), scalable scan management, control, and image reconstruction...
|
|
|
6351660 |
Enhanced visualization of in-vivo breast biopsy location for medical documentation
An image processing system and method visually documents and displays the in-vivo location from which a biopsy specimen was extracted, by processing pre-biopsy and post-biopsy images. A composite...
|
|
|
6198791 |
Scalable multislice imaging system
The present invention is, in one aspect, an imaging system having a detector that has multiple detector cells extending along a z-axis, the detector being configured to collect multiple slices of...
|
|
|
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...
|
|
|
5841831 |
X-ray computed tomography apparatus
In an x-ray computed tomography apparatus the source of X-rays and the detector are able to scan a volume of the examination subject in a short time. The X-ray source contains an anode that is...
|
|
|
5361291 |
Deconvolution filter for CT system
A CT apparatus for reducing aliasing in reconstructed images uses an x-ray tube with a translatable focal spot to double the spatial sampling rate, over that achieved by a conventional CT machine....
|
|
|
5313510 |
X-ray tube for computer tomography
An x-ray tube for computer tomography (CT) has a cathode for generating an electron beam, a rotating anode having an incident area onto which the electron beam is incident in a focal spot, and a...
|
|
|
5195112 |
X-ray computer tomography system
An X-ray computer tomography system with a stationary ring anode and a plurality of stationary electron sources for the construction of fast scan images from the inside of an object is improved in...
|
|
|
4992941 |
Computer tomography apparatus with periodic focus deflection
A computer tomography apparatus has an x-ray source with a focus, with the focus being periodically deflected during data acquisition, specifically during mean value formation of the signals...
|
|
|
4962513 |
Computer tomography apparatus which avoids image artifacts caused by periodical voltage variations
A computer tomography apparatus has a circular anode and a circular radiation detector in which a patient to be examined is disposed. An electron beam from an electron gun is deflected by a beam...
|
|
|
4914681 |
Computer tomography apparatus
A computer tomography apparatus has an annular anode surrounding a volume in which an examination subject is disposed, a source for generating an electron beam, and a coil through which the...
|
|
|
4897788 |
Image correction for computed tomography to remove crosstalk artifacts
A correction method and apparatus for Computed Tomography (CT) removes ring and streak artifacts from images by correcting for data contamination by crosstalk errors. Crosstalk coupling between all...
|
|
|
4730350 |
Method and apparatus for scanning X-ray tomography
Tomographic or sectional X-ray images (46) of a subject (32) are obtained rapidly by a method and apparatus that do not inherently require motion of the X-ray source (12) and detectors (13) or...
|
|
|
4665539 |
Method and apparatus for forming tomographic images
A method of forming tomographic images in cross-sectional tomography, in which a body is irradiated by a flat X-ray beam at different angles for successively forming a plurality of profiles on an...
|
|
|
4637040 |
Plural source computerized tomography device with improved resolution
An apparatus for examining a body by means of penetrating radiation. The apparatus has a source of penetrating radiation for transmitting radiation through a body, and a detector array disposed to...
|
|
|
4521901 |
Scanning electron beam computed tomography scanner with ion aided focusing
An electron beam production and control assembly especially suitable for use in producing X-rays in a computed tomography X-ray scanning system is disclosed herein. In this system, an electron beam...
|
|
|
4352986 |
Tomographic apparatus for the production of transverse layer images
The exemplary embodiments disclose a computer tomograph which also is operable for the preparation of an x-ray shadow image. To this end every detector of the radiation receiver is extended in the...
|
|
|
4352021 |
X-Ray transmission scanning system and method and electron beam X-ray scan tube for use therewith
A high speed multiple section, computed-tomographic x-ray scanner is provided. The scanner utilizes a multiple-anode, scanning electron beam x-ray source to provide high speed scanning of sections...
|
|
|
4292563 |
Multiple cathode X-ray tube for densitometers
A multiple cathode X-ray tube for densitometers.This tube contains an anode assembly functioning by transmission, which is arranged along the sides of a regular convex polygon, with several...
|
|
|
4250425 |
Rotating anode X-ray tube for tomodensitometers
A hollow, cylindrical, rotating anode, X-ray tube for tomodensitometers.This tube contains a bell-shaped, hollow, cylindrical anode functioning by transmission, which is swept on its inner surface...
|
|
|
4234794 |
Installation of radiodiagnosis with sweep
The installation according to the invention practically eliminates the total irradiation of the radiologic examinated persons, using an X radiations source, which produces a swept filiform beam,...
|
|
|
4211925 |
CT Scanner with anode scan monitor
In a variant of the type of radiographic apparatus known as CT scanners a scanning X-ray tube is used to provide a planar fan-shaped distribution and to scan the distribution in its plane. Means...
|
|
|
4171476 |
Radiography
In a computerized tomographic apparatus in which the source and detectors are moved angularly around the body, the angular movement of the source is, in effect, periodically arrested so that the...
|
|
|
4160909 |
X-ray tube arrangements
In order to monitor the progress of a deflected electron beam across the target of an X-ray tube, the emitted X-radiation is monitored, by allowing radiation to impinge, via a common aperture, upon...
|
|
|
4144457 |
Tomographic X-ray scanning system
Cross-sectional or oblique sectional tomographic X-ray images of a subject are obtained more quickly, easily and economically and with less cumbersome apparatus by utilizing an X-ray source in...
|
|
|
4112397 |
X-ray tube arrangement
In an X-ray tube arrangement of the kind in which an electron beam is deflected along a target/anode there is provided means for monitoring the progress of the deflection to correct for errors....
|
|
|
4097744 |
Radiographic apparatus having repetitive movement of the origin of the radiation
Radiographic apparatus is provided to evaluate the absorption coefficient of a body at each of a plurality of locations distributed over a cross-sectional slice of the body of a patient. A source...
|
|
|
4066902 |
Radiography with detector compensating means
Radiographic apparatus utilizing a plurality of radiation-sensitive detectors to quantify the radiation emerging from a body along respective paths is provided with means for compensating for...
|
|
|
4045672 |
Apparatus for tomography comprising a pin hole for forming a microbeam of X-rays
In an X-ray generating column, an X-ray microbeam is generated by irradiating a target with a scanning finely focused electron beam and permitting the microbeam to pass a pin hole in a beam guide...
|
|
|
4039807 |
Electron beam deflection arrangements having preshaping of the beam
In an X-ray source for radiographic apparatus of the type known as computerized axial tomography (CAT) scanners it has been suggested to scan a beam of electrons across a target/anode to...
|
|
|
4010370 |
Computerized tomography apparatus with means to periodically displace radiation source
Radiographic apparatus is described for evaluating the absorption coefficient of a body at each of a plurality of locations distributed over a planar slice disposed cross-sectionally of the body. A...
|