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| Number | Title | Issue Date |
| 8184766 | X-ray computer tomograph and method for investigating an object by means of X-ray computer tomography In an X-ray computer tomograph and a method for investigating an object by means of X-ray computer tomography, to improve the image quality, a first intensity of the X-ray radiation between an X-ray source and the object is measured by means of a first intensity mea... | 05/22/2012 |
| 8121249 | Multi-parameter X-ray computed tomography The present invention relates to the field of x-ray imaging. More particularly, embodiments of the invention relate to methods, systems, and apparatus for imaging, which can be used in a wide range of applications, including medical imaging, security screening, and ... | 02/21/2012 |
| 7627080 | Quantitative material decomposition for spectral CT A data processing method for use in an imaging system is described. The method includes determining a special footprint of an unknown mixture of substances from a first region and using the spectral footprint to decomposition of second region. ... | 12/01/2009 |
| 7623616 | Computer tomography apparatus and method for examining an object of interest A computer tomography apparatus (100) for examination of an object of interest (107), the computer tomography apparatus (100) comprising detecting elements (123) adapted to detect electromagnetic radiation coherently scattered from an obj... | 11/24/2009 |
| 7587021 | Computer tomography apparatus A computer tomography apparatus for examination of an object of interest includes detecting elements adapted to detect electromagnetic radiation scattered from the object of interest in an energy-resolving manner. A combination unit is adapted to combine signals det... | 09/08/2009 |
| 7551709 | Fan-beam coherent-scatter computer tomography In CSCT, by using a fan-shaped primary beam, combined with a 2D detector, single-slice transmission tomography and scatter tomography can be measured simultaneously. In such a System blurred scatter functions are measured unless a monochromatic source of radiation i... | 06/23/2009 |
| 7474728 | Computed tomography apparatus The invention relates to a computed tomography apparatus (CT apparatus) for imaging by means of radiation having traversed an object to be examined (that is, directly transmitted radiation), as well as by means of radiation scattered by the object to be examined, wh... | 01/06/2009 |
| 7453974 | Beam-hardening and attenuation correction for coherent-scatter CT In CSCT, an exact reconstruction of a scattering function for each voxel is not known for polychromatic primary radiation. According to an exemplary embodiment of the present invention, a beam hardening compensation is performed prior to reconstruction allowing to p... | 11/18/2008 |
| 7418073 | Computed tomography device and method with three-dimensional backprojection The invention relates to a computed tomography method in which an examination zone is irradiated along a circular trajectory by a fan-shaped radiation beam. Radiation coherently scattered in the examination zone is measured by a detector unit, the variation in space... | 08/26/2008 |
| 7412131 | Multilayer optic device and system and method for making same An optic device, system and method for making are described. The optic device includes a first solid phase layer having a first index of refraction with a first photon transmission property and a second solid phase layer having a second index of refraction with a se... | 08/12/2008 |
| 7372936 | Radiation computed tomography apparatus and tomographic image data generating method A radiation computed tomography apparatus that includes a radiation detector having a plurality of radiation detector elements arranged in a two-dimensional manner for detecting radiation passing through a subject, and a reconstructing device for arithmetically reco... | 05/13/2008 |
| 7372934 | Method for performing image reconstruction using hybrid computed tomography detectors A method for acquiring an image data set comprising energy integrating (EI) and energy discriminating (ED) data measurements is provided. The method comprises obtaining EI measurement data and ED measurement data during an acquisition cycle. The method then comprise... | 05/13/2008 |
| 7336760 | Methods, systems, and computer-program products to estimate scattered radiation in cone-beam computerized tomographic images and the like Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of ... | 02/26/2008 |
| 7324678 | Method for determining noise in radiography In order to model a fluoroscopic noise present in a radiography operation, two successive images of a same zone are used so that it is possible to pair the dots of the two images as a function of the zone of the space that they represent. The pairs of dots are group... | 01/29/2008 |
| 7212848 | Optical computed tomography scanner for small laboratory animals An optical CT scanner for small laboratory animals comprises a housing having a vertical through opening through which a test subject is passed through during a scanning session, the housing including a peripheral slot disposed around the perimeter of the opening; a... | 05/01/2007 |
| 7155274 | Optical computed tomography scanner for small laboratory animals An optical CT scanner for small laboratory animals comprises a housing having a vertical through opening through which a test subject is passed through during a scanning session, the housing including a peripheral slot disposed transversely through the perimeter of ... | 12/26/2006 |
| 7142703 | Methods and software for self-gating a set of images Methods and software for self-gating a set of images. In exemplary embodiments, a fundamental heart frequency of the patient can be measured without the use of an ECG signal. In one method, the fundamental heart frequency can be determined by analyzing the size of t... | 11/28/2006 |
| 7031528 | Interactive system for analyzing scatter plots A scanner system analyses data plotted in a scatter plot in accordance with user-specified criteria or statistical measures from the data population, to produce a scatter plot that displays in the plotted data the boundaries for the selection of out-lyer points and/... | 04/18/2006 |
| 7006862 | Graphical user interfaces and methods for retrospectively gating a set of images Graphical user interfaces and methods for displaying ECG, slice images and a reconstruction projection image of the slices. In exemplary embodiments, the graphical user interfaces and methods facilitate the selection of slice images that are taken during a quiet par... | 02/28/2006 |
| 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 detector, and imaging the patient between the pencil-beam x-ray source... | 10/18/2005 |
| 6930683 | Three-dimensional reconstruction method utilizing reprojective optimization A method of operating a data processing system to generate a three-dimensional model of a space from a plurality of measured images of the space. Each measured image includes a view of the space from a corresponding viewpoint. The method divides the space into a plu... | 08/16/2005 |
| 6904118 | Method and apparatus for generating a density map using dual-energy CT The present technique provides for the generation of density maps using one or more basis material decomposition tables or functions. The basis material decomposition tables or functions are generated by simulating the system response to various lengths of basis mat... | 06/07/2005 |
| 6856826 | 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.) s... | 02/15/2005 |
| 6856827 | 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 c... | 02/15/2005 |
| 6676854 | Gadorinium oxysulfide phosphor for digital radiography, radiographic image conversion screen and radiograph-forming device A gadolinium oxysulfide phosphor for digital radiography represented by the following compositional formula, which mainly emits a green luminescence under excitation with radiation: wherein x, y and z are numbers which satisfy 1.2×10-3ࣘxࣘ1.9×10... | 01/13/2004 |
| 6631211 | Interactive system for analyzing scatter plots A scanner system analyses data plotted in a scatter plot in accordance with user-specified criteria or statistical measures from the data population, to produce a scatter plot that displays in the plotted data the boundaries for the selection of out-lyer ... | 10/07/2003 |
| 6490475 | Fluoroscopic tracking and visualization system A system employs a tracker and a set of substantially non-shadowing point markers, arranged in a fixed pattern or set in a fluoroscope calibration fixture that is imaged in each shot. The fixture is preferably affixed to the image detector of the fluorosc... | 12/03/2002 |
| 6477226 | X-ray analysis device with X-ray optical semi-conductor construction element An X-ray analysis device (1) having an X-ray source (2) for illuminating a sample (6) with X-radiation (4), a sample support for receiving the sample (6) and a detector (12,14) for detecting the diffracted or scattered X-radiation or fluorescent X-radiati... | 11/05/2002 |
| 6470067 | Computed tomography apparatus for determining the pulse momentum transfer spectrum in an examination zone A computed tomography apparatus includes a scanning unit which is rotatable relative to an examination zone, about an axis of rotation extending through the examination zone, a radiation source for generating a radiation beam, a diaphragm arrangement whic... | 10/22/2002 |
| 6385476 | Method and apparatus for intracardially surveying a condition of a chamber of a heart A condition, such as an electrical property, of a chamber of a heart is surveyed with a catheter having a condition sensor at its distal tip. A method for surveying the chamber includes the steps of acquiring a first image of the chamber containing topogr... | 05/07/2002 |
| 6340436 | Phosphor, and radiation detector and X-ray CT unit each equipped therewith A phosphor represented by the general formula (L1-x-y-z-d Eux Cez M'd)2 O2 S (wherein L is at least one element selected from the group consisting of Gd, La and Y, M is at least one element selected ... | 01/22/2002 |
| 5583908 | Megavoltage scanning imager and method for its use Apparatus for generating a high contrast image of a living subject includes an X-ray source capable of generating an X-ray beam having an energy between about 4 MeV and about 40 MeV, means for directing the X-ray beam generated by the X-ray source to a pr... | 12/10/1996 |
| 5436829 | Method of achieving reduced dose X-ray fluoroscopy by employing transform-based estimation of Poisson noise An interactive system for producing X-ray fluoroscopic images determines X-ray tube photon count and voltage for producing acceptable quality images while minimizing X-ray radiation dosage to a subject. An image is created and a signal to noise (S/N) rati... | 07/25/1995 |
| 5430787 | Compton scattering tomography Apparatus and methods for Compton scattering tomography employ a source of monoenergetic gamma rays and a detector capable of detecting the energy of scattered photons and determining the detector location both disposed on one side of an object to be imag... | 07/04/1995 |
| 5390225 | Mapping slices of the human body into regions having a constant linear attenuation coefficient for correcting images acquired during a nuclear medicine study for attenuation artifacts An energy window of a scintillation camera system is set to include only events which have been Compton-scattered within a slice of the body of a patient undergoing a SPECT examination. From events so acquired, a scatter image is reconstructed. The scatte... | 02/14/1995 |
| 5070455 | Imaging system and method using scattered and diffused radiation An imaging system generates images of the interior of an object using radiation which is attenuated and scattered by the interior of the object. The object is radiated at a number of points near the exterior of the object, and the radiation emerging from ... | 12/03/1991 |
| 5056020 | Method and system for the correction of image defects of a scanner due to the movements of the latter Disclosed is a method for the correction, in a scanner, of the defects due to the movements of the scanner. The method consists in having a rod which introduces a major attenuation and causing the scanner to make a full turn around a center of rotation O ... | 10/08/1991 |
| 4850002 | Two-dimensional compton profile imaging method The invention relates to a method of determining the Compton profile of an object to be examined which is situated in an examination zone. The examination zone is irradiated by a monochromatic primary beam whose energy is chosen so that the attenuation of... | 07/18/1989 |
| 4809312 | Method and apparatus for producing tomographic images Method and apparatus for the production of tomographic images includes a flying spot scanner to form, from a beam of penetrating radiation, a pencil beam sweeping over a line in space to define a sweep plane. An object to be examined is supported so that ... | 02/28/1989 |
| 4751722 | X-ray apparatus The invention relates to an X-ray apparatus which allows for the determination of the elastically scattered X-rays and the evaluation of the information contained therein. Because the scattered radiation exhibits a pronounced maximum value as a function o... | 06/14/1988 |
