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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...
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7620141 |
X-ray imaging apparatus
The present invention relates to an X-ray imaging apparatus using a technique for preventing artifacts appearing in 3D X-ray images. The technique involves subtraction images obtained by an energy...
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7613274 |
Method and system of energy integrating and photon counting using layered photon counting detector
A diagnostic imaging system includes an x-ray source that emits a beam of x-ray energy toward an object to be imaged and an energy discriminating (ED) detector that receives the x-ray energy...
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7599467 |
Device for contact-free transmission of signals and measured data in a computed tomography apparatus
An x-ray computed tomography apparatus has a stationary unit and a rotatable unit, carrying an x-ray source and a radiation detector. The rotatable unit rotates around an axis relative to the...
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7590215 |
Coherent-scatter computer tomograph
Conventional CSCT may require a complex reconstruction involving a large number of calculations. According to an exemplary embodiment of the present invention, additional collimators are used in...
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7583779 |
System and method for acquisition and reconstruction of contrast-enhanced, artifact-reduced CT images
A system and method are disclosed for reconstructing contrast-enhanced CT images that are substantially free of beam-hardening artifacts. An imaging system includes a radiation source configured to...
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7551708 |
Method of iterative reconstruction for energy discriminating computed tomography systems
A new method extends iterated coordinate descent (“ICD”)—an optimization method employed in some statistical reconstruction algorithms—to handle material decomposition (“MD”) for energy...
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7545904 |
X-ray detector methods and apparatus
A method includes simultaneously collecting both x-ray count data and energy charge data from a single cell.
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7545902 |
Received x-ray handling methods and apparatus
A method includes placing received x-rays into at least three bins.
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7531818 |
Multiple room radiation treatment system
The present invention refers to a radiation system ( 1 ) comprising an excentric gantry ( 100 ) arranged in connection with multiple treatment rooms ( 61 - 68 ) separated by radiation-shielding...
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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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7480362 |
Method and apparatus for spectral computed tomography
An apparatus receives signals generated by a detector ( 100 ) sensitive to ionizing radiation such as x-rays. A differentiator ( 204 ) generates an output indicative of the rate of change of the...
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7477928 |
Method and system for associating an EKG waveform with a CT image
A method for associating EKG waveform data with computed tomography image data using a data synchronization scheme including generating the EKG waveform data using an electrocardiogram device,...
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7471758 |
X-ray CT apparatus
An X-ray CT apparatus comprising a storage device which stores therein a first table where fat contents are respectively associated with the values of the ratios of CT numbers, a CT number...
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7467008 |
Ectography multimodality imaging system for diagnosis and treatment
A system and method of integrating a nuclear medicine imaging device such as a gamma camera with a patient handling system where the nuclear medicine imaging system does not prevent full access to...
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7466793 |
Distinct incident energy spectra detection
A CT system in an example comprises one or more high frequency electromagnetic energy sources, a detection assembly, a data acquisition system (DAS), and a computer. The one or more high frequency...
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7460635 |
X-ray CT apparatus, method of controlling the same, and program
In an X-ray CT apparatus for sequentially performing first and second scans of different control parameters by switching the control parameter of at least one of tube voltage and tube current of an...
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7415146 |
Method and apparatus to determine bone mineral density utilizing a flat panel detector
A method and apparatus for using a flat panel detector to determine bone mineral density are provided. The apparatus includes a dual energy X-ray emitter, a flat panel detector for receiving X-rays...
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7397886 |
Method and apparatus for soft-tissue volume visualization
A method for obtaining data including scanning an object using a multi-energy computed tomography (MECT) system to obtain data to generate an anatomical image, and decomposing the obtained data to...
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7386089 |
Radiographic imaging apparatus, control method thereof, and radiographic imaging system
A radiographic imaging apparatus includes a radiation detection circuit with elements arranged two-dimensionally to convert radiation into an electrical signal, a driving mechanism which changes a...
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7381962 |
Method and system for detecting substances, such as special nuclear materials
A system for detecting substances, the system including a dual-energy radiography (DER) system including a gamma-ray radiation source, including a beam accelerator and a target to which the...
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7356118 |
Angled-beam detection system for container inspection
A non-intrusive inspection system, including apparatuses and methods, for non-intrusively inspecting containers such as, without limitation, those employed to transport items in international...
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7332724 |
Method and apparatus for acquiring radiation data
Method and apparatus for sensing and acquiring radiation data comprises sensing radiation events with a multi-modality detector. The detector comprises solid state crystals forming a matrix of...
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7330531 |
System for quantitative radiographic imaging
A system for spectroscopic imaging of bodily tissue in which a scintillation screen and a charged coupled device (CCD) are used to accurately image selected tissue. Applications include the imaging...
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7330527 |
Method and system of dynamically controlling shaping time of a photon counting energy-sensitive radiation detector to accommodate variations in incident radiation flux levels
A method and system of counting and tagging radiation energy received by a radiation detector is presented. The method and system are designed to dynamically control the sampling window or shaping...
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7319739 |
Imaging method based on two different x-ray spectra
A method is for imaging examination of an examination object. A contrast agent is administered to the object to be examined. At least two spatial distributions of X-ray attenuation values are...
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7319733 |
System and method for imaging using monoenergetic X-ray sources
An imaging system is provided for various non-invasive medical and non-medical imaging. The imaging system includes a tunable X-ray source for emitting X-rays having a substantially monoenergetic...
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7315604 |
Method for an x-ray device and computer tomograph for reducing beam hardening artifacts from a generated image of an object
A method is disclosed for an x-ray device and a computer tomograph for suppressing beam hardening artifacts in a generated image of an object, for example in a tomogram of a patient. In the method,...
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7298812 |
Image-based material decomposition
A CT scanner acquires CT images at different energy levels and registers those images to provide a composite image that is substantially free of beam hardening artifacts and conspicuously provides...
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7272429 |
Methods and apparatus for facilitating a reduction in artifacts
A method for facilitating a reduction in artifacts includes receiving data regarding a first energy spectrum of a scan of an object, and receiving data regarding a second energy spectrum of a scan...
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7254260 |
Method and apparatus for compressing image signals
A plurality of radiation image signals respectively representing a plurality of radiation images of an object, which radiation images have been formed with several kinds of radiation having...
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7236559 |
Dual energy scanning protocols for motion mitigation and material differentiation
A method for reducing mis-registration during multiple energy scanning on computed tomographic (CT) imaging systems or multiple energy electron beam tomographic (EBT) systems includes scanning a...
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7224763 |
Method of and system for X-ray spectral correction in multi-energy computed tomography
A method of and a system for spectral correction in multi-energy computed tomography are provided to correct reconstructed images, including high-energy CT images and Z (effective atomic number)...
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7220961 |
System and method for quality control in nuclear imaging systems
A method of controlling quality in a nuclear medicine imaging system includes providing an extendable radioactive source in a frame of the nuclear medicine imaging system, providing a detector...
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7215732 |
Method and system for CT reconstruction with pre-correction
A method for reconstructing image data from measured sinogram data acquired from a CT system is provided. The CT system is configured for industrial imaging. The method includes pre-processing the...
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7209536 |
CT colonography system
A method and system of CT colonography is presented that includes the acquisition of energy sensitive or energy-discriminating CT data from a colorectal region of a subject. CT data is acquired and...
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7190757 |
Method of and system for computing effective atomic number images in multi-energy computed tomography
A method of and a system for computing Z (effective atomic number) images from projection data are provided, wherein the projections are acquired using at least two x-ray spectra for a set of...
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7149278 |
Method and system of dynamically controlling shaping time of a photon counting energy-sensitive radiation detector to accommodate variations in incident radiation flux levels
A method and system of counting and tagging radiation energy received by a radiation detector is presented. The method and system are designed to dynamically control the sampling window or shaping...
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7139362 |
Computer tomograph comprising energy discriminating detectors
The invention relates to a computer tomograph comprising a detector unit ( 2 ) consisting of a plurality of detectors ( 1 ) for identifying X-ray radiation ( 40 ). According to the invention, the...
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7133494 |
Method for radiological examination of an object
The invention relates to a method for x-ray examination of an object where two categories of materials are taken into consideration, comprising: the use of broad spectrum x-rays; measurements of...
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7120222 |
CT imaging system with multiple peak x-ray source
An x-ray source ( 32 ) for performing energy discrimination within an imaging system ( 10 ) includes a cathode-emitting device ( 82 ) emitting electrons and an anode ( 81 ) that has a target ( 80 )...
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7117027 |
Method for establishing a three-dimensional representation of a bone from image data
A system and method for preparing a virtual three-dimensional representation of a first portion of a bone. The method may comprise obtaining, from a first orientation with respect to the first...
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7088799 |
Method and apparatus for presenting multiple pre-subject filtering profiles during CT data acquisition
The present invention is directed to a method and apparatus for CT data acquisition using a rotatable pre-subject filter having more than one filtering profile to control radiation exposure to a...
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7086780 |
Methods for spectrally calibrating CT imaging apparatus detectors
A method for calibrating a computed tomographic imaging apparatus having a gantry, a radiation source operable at a plurality of kVp's, and a detector array having a plurality of detector elements...
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7058155 |
Methods and apparatus for detecting structural, perfusion, and functional abnormalities
A method for obtaining data includes scanning a lung of a patient with a Multi-Energy Computed Tomography (MECT) system to acquire data regarding a plurality of contrast agents.
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7050533 |
Method and device for determining the type of fluid in a fluid mass in an object
A method and a device are proposed for determining the type of fluid in a fluid mass in an object. X-ray attenuation data is supplied from one or a plurality of X-ray recordings of an object area...
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7050530 |
Method and apparatus for the spatially-resolved determination of the element concentrations in objects to be examined
A method is proposed for the spatially-resolved determination of the concentration of n elements and/or element combinations in an object to be examined that includes these elements and/or element...
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7050529 |
Methods and apparatus for performing a computed tomography scan
A computed tomographic (CT) imaging system for performing a CT scan includes a detector array including a plurality of detector cells and a processor operationally coupled to the detector array....
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7046756 |
Rotatable filter for a pre-subject CT collimator having multiple filtering profiles
The present invention is directed to a method and apparatus for CT data acquisition using a rotatable pre-subject filter having more than one filtering profile to control radiation exposure to a...
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7031426 |
Methods and system for detecting components of plaque
A method including detecting components of plaque using a multi-energy computed tomography (MECT) system is provided.
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