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7602952 |
Scanner having spatial light modulator
The present invention features incorporating an adaptive spectral filter into a confocal scanner optical arrangement or other suitable optical device to permit real time control of the fluorescence...
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7602881 |
Radiation detection unit for a computer tomograph
A radiation detection unit is disclosed for a computer tomograph, and a computer tomograph having a radiation detection unit is also disclosed. In at least one embodiment, the radiation detection...
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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...
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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...
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7545910 |
Method and imaging system for imaging the spatial distribution of an x-ray fluorescence marker
The invention describes a method of generating metabolic images of an investigation region ( 3 ) of a body ( 1 ) by irradiating an X-ray fluorescence marker in that region and detecting the...
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7529341 |
Automatic material discrimination by using computer tomography
Method and apparatus are provided for combining information obtained from CT and Coherent Scatter Computed Tomography to better determine whether there are dangerous materials in the baggage or...
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7502437 |
Focused coherent-scatter computer tomography
Due to the provision of slit collimators an intensity of a fan beam is reduced significantly such that expensive high power x-ray tubes have to be used. According to an exemplary embodiment of 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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7486773 |
Megavoltage scatter radiation measurement using beam stop array
A system may include emission of megavoltage radiation from a megavoltage radiation source, acquisition of a first image using an imaging device while first megavoltage radiation is emitted from...
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7486772 |
Systems and methods for x-ray imaging and scanning of objects
Systems and methods for x-ray imaging and scanning of objects are disclosed. According to one aspect, the subject matter described herein can include providing an x-ray source configured to...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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: (Gd...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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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4590558 |
Method and apparatus for removing objects from CT images
Method and apparatus for producing CT images in which localized regions ("rub-out" regions) of the original object are not reproduced in order to eliminate artifacts generated by objects within...
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4480332 |
Apparatus for examination by scattered radiation
The invention relates to an apparatus for imaging a layer of a body to be examined. The body is irradiated by primary radiation, in response to which the layer emits scattered radiation. The...
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4423522 |
Device for the imaging of body layers by means of monoenergic radiation
A scatter radiation device for determining the internal structure of a body comprises a monoenergic radiation source for emitting a narrow primary beam which penetrates the body, at least one slit...
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4403289 |
Method and device for computed tomography
A computer tomography device in which the detectors are asymmetrically arranged with respect to the connecting line between the X-ray source, the center of rotation of the source, and the...
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4384209 |
Method of and device for determining the contour of a body by means of radiation scattered by the body
When only a part of a body slice to be examined, for example, a separate organ, is irradiated by means of a fan-shaped radiation beam during computer tomography, it is necessary to know the body...
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4380817 |
Method for examining a body with penetrating radiation
Devices that measure the electron density in a body by means of radiation scattered from a narrow pencil beam of penetrating radiation directed through the body, produce defective images on...
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4375695 |
Device for determining the density distribution in an object
In a device for determining the density distribution on a straight line by means of a narrow penetrating beam, the measuring accuracy for the center of an object to be examined is increased in that...
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4342916 |
Method of and apparatus for tomographic examination of structures by X-ray or gamma ray scanning
A method of and an apparatus for tomographic examination by X-ray or gamma ray scanning of structures, intended for the display of images of slices of the structure examined by determination of the...
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4277686 |
Device 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...
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4258256 |
Device for examining a body by means of penetrating radiation
A body is irradiated by a primary radiation beam; the scattered radiation produced thereby is incident on a detector device consisting of a plurality of detectors and is a measure for the density...
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4229651 |
Radiation scanning method and apparatus
Method and apparatus for scanning an object, such as the human body, with radiation utilizes a slit for passing only a portion of scattered radiation from a radiation beam directed through the...
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4228353 |
Multiple-phase flowmeter and materials analysis apparatus and method
An apparatus and method for elemental analysis and non-invasive measurement of the mass flow rate and/or density distribution of a multiple-phase system. The apparatus includes at least two X-ray...
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4149081 |
Removal of spectral artifacts and utilization of spectral effects in computerized tomography
In an instrument for reconstructing computerized tomograms utilizing penetrating radiation, typically X or gamma radiation, an apparatus and technique are disclosed for removing spectral artifacts...
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4124804 |
Compton scatter scintillation camera system
A method and apparatus for producing tomographic or cross-sectional radiographic images of a portion of a patient's anatomy, or of another object, by means of a planar-collimated gamma-ray source,...
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4123654 |
Method for determining the density of bodies by means of penetrating rays and apparatus for carrying out said method
In the illustrated embodiments radiant energy at a plurality of distinct energy levels (each above 150 keV) is directed along one or more primary beam paths, and a series of detectors are arranged...
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3965353 |
Cross-sectional X-ray emission imaging system
A sheet beam x-ray source having energy components greater than 1.02 Mev is passed through an object under study. The emitted gamma rays due to pair production are measured using a...
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3936638 |
Radiology
In a method of investigating a body of means of penetrating radiation such as X- or γ- radiation, the energy of the radiation is chosen to be such that the radiation is scattered, rather than...
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3927318 |
Cross-sectional fluorescent imaging system
A narrow x-ray beam is scanned across a cross section containing a relatively high atomic number material. When excited by the x-ray beam the material fluoresces and emits its characteristic...
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