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Class 378/13 - Radial


Subclass of Class 378 - X-ray or gamma ray systems or devices
Definition: Subject matter wherein the source or detector is translated
No. of patents: 32
Last issue date: 07/14/2009


NumberTitleIssue Date
7561659Method for reconstructing a local high resolution X-ray CT image and apparatus for reconstructing a local high resolution X-ray CT image
Disclosed is a method for reconstructing an X-ray CT (computerized tomography) image. The method includes acquiring projection data by means of irradiation of X-rays on a target object at a position close to an X-ray generator such that a portion of the target objec...
07/14/2009
7477721Open access air bearing gantry
A diagnostic imaging system (10) includes an x-ray source (16), which is rotated around an examination region (20) on a rotating gantry (14). A subject, disposed on a couch (30), is translated longitudinally through the examination...
01/13/2009
7418074Computed tomography system with adjustable focal spot-to-detector distance
A computed tomography system with an adjustable focal spot-to-detector distance has a gantry provided with a patient opening, an x-ray tube and a detector, respectively mounted at opposite sides of the gantry. The x-ray tube has a focal spot and the x-ray fan beam r...
08/26/2008
7324625Contraband detection systems using a large-angle cone beam CT system
A contraband detection system using a cone beam computed tomography scanner. The cone beam scanner allows for rapid acquisition of data for computing three dimensional density maps of objects within items under inspection. Where greater resolution is desired, the im...
01/29/2008
7305263Magnetic 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 supporting the subject, a magnet system a magnetic field to the operating re...
12/04/2007
7197404Computation of radiating particle and wave distributions using a generalized discrete field constructed from representative ray sets
The present system and method for simulating particles and waves is useful for calculations involving nuclear and full spectrum radiation transport, quantum particle transport, plasma transport and charged particle transport. The invention provides a mechanism for c...
03/27/2007
7180977Scanning-based detection of ionizing radiaion for tomosynthesis
A scanning-based apparatus for obtaining tomosynthesis data of an object performing a periodic movement comprises a radiation source emitting radiation around an axis of symmetry; a radiation detector comprising line detectors, each being directed towards the diverg...
02/20/2007
7173249Nuclear medical diagnostic apparatus and method for detecting radiation
A method for detecting radiation emitted from a radiation source within a subject. A radiation detector is moved in approximately parallel with the direction of the body axis of the subject. The detector is rotated about the body axis. The distance between the subje...
02/06/2007
7113631Method and device for reconstruction of a dynamic three-dimensional image of an object covered by a contrast medium
The method comprises a phase of reconstruction of a static three-dimensional image of the object from a first set of digitized two-dimensional projected images of the object respectively obtained for different positions of a camera around the object, a phase of acqu...
09/26/2006
7103134Computed tomography apparatus
A computed tomography apparatus configured to assist an operator in easily and correctly making an imaging plan thereby reducing the burden of the operator. The computed tomography apparatus selects at least one of reconstruction methods or changes a parameter by th...
09/05/2006
7085405Direct tomographic reconstruction
A method of reconstructing tomography images comprising: acquiring data on individual radiation events; distributing a weight of the individual radiation events along a line of flight associated with the event determined from the acquired data; and iteratively recon...
08/01/2006
7020237Scanning-based detection of ionizing radiation for tomosynthesis
An apparatus for obtaining tomosynthesis data of an object comprises a source emitting radiation centered around an axis of symmetry; a radiation detector comprising a stack of line detectors, each being directed towards the source at a respective angle; and a devic...
03/28/2006
7003070Upright CT scanner
In an upright CT scanner, an X-ray source and a two-dimensional digital X-ray detector are mounted on a rotating platform with a vertical axis of rotation. During scanning, the X-ray source and the detector are on opposite sides of the rotational axis for orbiting a...
02/21/2006
6670625Method 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 a DC voltage applied to a positive ion electrode (PIE) wit...
12/30/2003
6194725Spect system with reduced radius detectors
An imaging system for generating SPECT images wherein first and second cameras are mounted to a gantry for rotation about an imaging axis, the cameras are positionible in an L configuration wherein their camera axis intersect at an intersection point, the...
02/27/2001
5287274Method for acquisition of radiological data in multiple orthogonal orientations using a 2D detector relating to a body irradiated with x-rays and for reconstruction of structures corresponding to said body using an algebraic algorithm
In voludensitometry and in cases in which it is necessary to acquire only a small number of views, the artifact ratio resulting from reconstructions is reduced. There is acquired at least one view of the object to be reconstructed, the principal direction...
02/15/1994
5253170Apparatus for computerized tomography, method of same, and apparatus for computerized tomography scanning
With the apparatus of CT, if the object contains a foreign body having high spatial frequency component such as a polygonal body etc., and large density difference from another region, a radial artifact is generated from a corner part of the side. The fir...
10/12/1993
5126938Computerized tomography system
A computerized tomography system comprising a means for data rearrangement for converting fan-beam projection data into parallel beam projection data speedily andd easily without complicated calculations, said fan-beam projection data obtained at the dete...
06/30/1992
5058011Radiant ray CT with view data interpolation
A radiant ray CT for reconstructing an image at a high effective rate, high resolution, and high picture quality with a shortened scan time and thus with less exposure. The apparatus comprises a source of radiant ray, such as an X-ray, and a group of dete...
10/15/1991
4984257Automatic dynamic focusing for computed tomography
A dynamic focusing device is provided for an X-ray scanner, the device comprising at least one detector module located in a position to receive, be illuminated by, and respond to X-rays. A source of X-rays is movable toward or away from the detector modul...
01/08/1991
4969165Automatic dynamic focusing for computed tomography
A dynamic focusing device is provided for an X-ray scanner, the device comprising at least one detector module located in a position to receive, be illuminated by, and respond to X-rays. A source of X-rays is movable toward or away from the detector modul...
11/06/1990
4682291Noise artifacts reduction
Equipment and methods improving the quality of a tomograph are presented for rearranging divergent beam derived data into parallel data. The equipment and method perform uniform noise distribution interpolation either in the reordering phase or in the reb...
07/21/1987
4682290Method of reconstructing a high resolution image by tomodensitometry
A method for reconstructing a high resolution image by interpolating intermediate values obtained from data collected over a complete revolution of the tomodensitometer. A shift of ##EQU1## is provided between the middle of the multi detector and the...
07/21/1987
4606062X-ray computed tomographic apparatus
An X-ray control device is held in a constant position relative to an X-ray tube and an X-ray detector, while the X-ray tube is moved toward or away from the rotational scanning axis at which an object to be examined is located. The X-ray control device a...
08/12/1986
4570224Combining rebinned and unrebinned parallel ray data with unequal lateral spacing to create tomograph images
Equipment and methods are presented for rearranging divergent beam derived data into parallel data to enable decreasing the number of preprocessing computations and improving the quality of the resulting tomograph. The equipment and method comprise means ...
02/11/1986
4539639Process for obtaining three-dimensional images of an object and its application to the tomography of an organ
A process and appparatus for obtaining three-dimensional images of an object with an application of the process and the device to the tomography of an organ. The device includes a detector or mobile rays which rotates about the object and mechanisms which...
09/03/1985
4464777Radiography apparatus
Disclosed is a radiography apparatus comprising an X-ray tube for radiating X-ray beam in a fan shape, a detector for detecting the X-ray beam coming through a living body at a plurality of angular components of the X-ray beam, and a sampling circuit for ...
08/07/1984
4277686Device for determining internal body structures by means of scattered radiation
The invention relates to a device for measuring a scatter coefficient distribution in a plane of a body. The plane is irradiated in different directions by a primary radiation beam along beam paths which are each time situated in parallel in a direction. ...
07/07/1981
4200799Tomographing device
A computed tomograph system comprises a radiation source for emitting a fan-shaped beam of penetrating radiation of included angle ଱, and a radiation detector comprising a plurality of radiation detection cells on which the fan-shaped beam falls. Be...
04/29/1980
4134020Apparatus for measuring local absorption differences
The radiation source of a fan-beam X-ray scanner is adjustable relative to the body to be examined so that the beam exactly covers the body. Use can be made of the radiation which passes besides the body for adjustment of the optimum distance. The variati...
01/09/1979
4115696Computed tomography scanner
In a scanner for computed tomography an X-ray source and a multiple cell X-ray detector are mounted on a rotatable support on opposite sides of the rotational axis for orbiting about a body to thereby scan it with a diverging X-ray beam. The source and de...
09/19/1978
4084094Radiographic apparatus
In a scanning radiographic apparatus, of a type which is particularly suitable for examining inanimate objects, a fixed source and detectors irradiate an object to be examined along a plurality of beam paths. The object is moved in relation to the source ...
04/11/1978
 
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