Matches 1 - 50 out of 148 1 2 3 >


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US20120128121 METHOD AND DEVICE TO ASSIST IN DOSE REDUCTION OF X-RAY RADIATION APPLIED TO A PATIENT  
In a method and x-ray device to assist in the reduction of the dose of x-ray radiation applied to the patient in the acquisition of at least one x-ray projection of the patient, a selected...
US20150170363 Generating An Estimate Of Patient Radiation Dose From Medical Imaging Scans  
Techniques are disclosed for estimating patient radiation exposure during computerized tomography (CT) scans. More specifically, embodiments of the invention provide efficient approaches for...
US20140321607 UPRIGHT X-RAY BREAST IMAGING WITH A CT MODE, MULTIPLE TOMOSYNTHESIS MODES, AND A MAMMOGRAPHY MODE  
A multi-mode system and method for imaging a patient's breast with x-rays in one or more of a CT mode, a narrow-angle tomosynthesis mode, a wide angle tomosynthesis mode, and a mammography mode,...
US20120243657 Fixed Anterior Gantry CT Shielding  
A radiation shield is fixed to scanning equipment at a location that attenuates a moving beam of radiation only while the beam passes over a relatively vulnerable portion, especially anterior...
US20130343513 GRATED COLLIMATION SYSTEM FOR COMPUTED TOMOGRAPHY  
A collimator for a computed tomography imaging device can include first and second leaves positioned on opposing sides of a primary radiation delivery window. The first and second leaves can...
US20130343514 DYNAMIC POWER CONTROL OF COMPUTED TOMOGRAPHY RADIATION SOURCE  
A method of contrast-enhanced computed tomography (CT) imaging can include repeatedly scanning a target region an applied power during a session. The applied power can be a first power for a first...
US20130188770 METHOD TO REDUCE RADIATION DOSE IN MULTIDETECTOR CT WHILE MAINTAINING IMAGE QUALITY  
A method of reducing radiation dose for a selected organ on a patient in a computed tomography (CT) scan that uses an X-ray source to scan the patient. The method comprises a computer determining...
US20120281807 Radiotherapy system  
A radiotherapy system comprising a support for a patient undergoing radiotherapy treatment, a gantry rotatable about an axis, a source of radiation mounted on the gantry and producing a beam of...
US20080304619 Modular Multi-Hole Collimators Method and System  
Embodiments of the present technique relate to a modular multi-hole collimator assembly configured to have an adjustable length. Each of the two or more multi-hole collimator units has a plurality...
US20120183118 AUTOMATED PARAMETER SELECTION FOR A TOMOGRAPHIC IMAGING DEVICE  
Systems and methods are provided for configuring parameters associated with a tomographic scanner. A tomographic scanner is configured to capture a scout image of a patient. A configuration...
US20130032715 X-RAY COMPTON SCATTER IMAGING ON VOLUMETRIC CT SYSTEMS  
Briefly described, in an exemplary form, the present invention discloses a system, method and apparatus for X-ray Compton scatter imaging. In one exemplary embodiment, the present invention uses...
US20080232543 METHOD FOR ACTIVATION OF AN EMITTER OF A COMPUTED TOMOGRAPHY SCANNER  
In a computed tomography scanner having an emitter for emitting a beam of given radiation through an object to be analysed, a detector for receiving said beam after the beam itself has traversed...
US20120275560 COMPOSITE MATERIAL X-RAY COLLIMATOR AND METHOD OF MANUFACTURING THEREOF  
A composite material pre-patient collimator for shaping an x-ray beam in a computed tomography (CT) system is disclosed. The pre-patient collimator includes a base comprised of a first material...
US20090316856 Method and device for imaging tomography  
An imaging method for imaging a region of investigation of an object, comprises the step of irradiating the region of investigation with at least one energy input beam along a plurality of...
US20120243658 PHASE CONTRAST IMAGING  
X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase...
US20140010343 COMPACT GEOMETRY CT SYSTEM  
An imaging system is provided. The imaging system includes a rotating gantry. An x-ray source is mounted to the gantry. The system also includes a plurality of interchangeable x-ray detector...
US20120269318 METHOD AND COMPUTED TOMOGRAPHY DEVICE AND DATA STORAGE MEDIUM FOR PERFORMING A DYNAMIC CT EXAMINATION ON A PATIENT  
In a computed tomography apparatus and operating method, a radiation source and radiation detector are rotated around a system axis, and a patient support plate and diaphragm elements of a...
US20120294415 METHOD AND SYSTEM FOR HIGH RESOLUTION NUTATED SLICE RECONSTRUCTION USING QUARTER DETECTOR OFFSET  
A method and system are provided for generating high resolution CT images. The NSR# method improves on the AMPR method, by increasing the in-plane image resolution of CT scanners, in the helical...
US20100067650 X-ray CT imaging apparatus and imaging control method therefor  
An X-ray CT imaging apparatus includes an X-ray generating section, an X-ray image capturing section, a supporting section, a holding section, a rotation driving section, and an X-ray controlling...
US20120224665 METHOD TO REDUCE RADIATION DOSE DELIVERED BY IMAGING SYSTEM  
In one embodiment, a method to reduce the radiation dose delivered by an imaging system is provided. The method comprises steps of selecting a virtual mask representation based on the shape of an...
US20100091937 X-RAY BEAM MODIFYING DIAPHRAGM AND DIAPHRAGM DEVICE  
A diaphragm and diaphragm device for the specific manipulation of x-ray radiation that emanates from an x-ray focus of a CT apparatus and serves for scanning an examination subject, wherein the...
US20100303198 ARRANGEMENT FOR THREE-DIMENSIONAL ELECTRON BEAM TOMOGRAPHY  
It is an object of the present invention to specify an arrangement for X-ray computed tomography, which allows continuous three-dimensional imaging of the examination object or a partial volume of...
US20100054395 X-RAY COMPUTER TOMOGRAPHY APPARATUS  
An X-ray computer tomography apparatus includes an X-ray tube, a two-dimensional array type X-ray detector, a rotating mechanism, a pair of collimators, a collimator moving mechanism which...
US20140126687 X-ray Photography Apparatus  
An X-ray photography apparatus including: a turning arm that supports an X-ray generator and an X-ray detector which are opposed to each other so that the head of a patient can be interposed...
US20100014630 X-RAY CT APPARATUS  
An X-ray CT apparatus acquires a scanogram of an object to be examined, generates an ellipse model having an X-ray attenuation coefficient equivalent to that of water and approximated to a...
US20130003914 METHOD AND SYSTEM FOR REDUCED DOSE X-RAY IMAGING  
Approaches for acquiring CT image data corresponding to a full scan, but at a reduced dose are disclosed. In one implementation, X-ray tube current modulation is employed to reduce the effective...
US20100308229 MOVABLE WEDGE FOR IMPROVED IMAGE QUALITY IN 3D X-RAY IMAGING  
When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A...
US20110274238 Computed tomography system  
A computed tomography system is provided for allowing it to be deployed more effectively. The computed tomography system features an annular CT gantry with a central opening, a recording system...
US20140177788 SYSTEMS AND METHODS FOR SELECTING PARAMETERS USING CONTRAST AND NOISE  
An imaging system includes an identification module, an analysis module, and a determination module. The identification module is configured to identify a scanning mode of operation. The analysis...
US20120236985 NON-PARALLEL GRATING ARRANGEMENT WITH ON-THE-FLY PHASE STEPPING, X-RAY SYSTEM  
The present invention relates to X-rayimage acquisition technology in general. Employing phase-contrast imaging for X-rayimage acquisition may significantly enhance the visibility of structures in...
US20130343515 DYNAMIC ADJUSTMENT OF X-RAY ACQUISITION PARAMETERS  
Among other things, one or more techniques and/or systems are described for dynamically adjusting one or more X-ray acquisition parameters of an X-ray imaging modality. During a first portion of...
US20120155605 X-RAY CT APPARATUS  
An X-ray CT apparatus is provided. The X-ray CT apparatus includes an X-ray tube configured to apply an X-ray onto a subject, a scan device configured to rotate the X-ray tube about the subject to...
US20120128122 X-RAY TUBE WITH INDEPENDENT X- AND Z- DYNAMIC FOCAL SPOT DEFLECTION  
An X-ray tube (260) is provided which is adapted to generate X-ray beams (258). The X-ray tube may comprise electrostatic grids (256) for focal spot deflection in x-direction, wherein the...
US20140037047 X-RAY CT APPARATUS  
An X-ray CT apparatus includes an X-ray tube, an X-ray detector, and a control unit. The X-ray detector includes at least two divided ranges. One range includes a small detection range in which...
US20140185745 COLLIMATOR FOR USE IN A CT SYSTEM  
A collimator for use in a CT system made of an X-ray absorbing material, the collimator comprises an imaging aperture having a first width for passage of a first X-ray beam, the first X-ray beam...
US20070147579 METHOD AND SYSTEM FOR RADIOGRAPHIC IMAGING WITH ORGAN-BASED RADIATION PROFILE PRESCRIPTION  
A method and system is disclosed that minimizes the effective dose to an object by determining a segmented component map for the object, parametrizing tube current/energy level/x-ray...
US20090252286 X-RAY CT APPARATUS AND CONTROL METHOD OF X-RAY CT APPARATUS  
An X-ray CT apparatus has an irradiate unit, a determination unit, and a displaying unit. The irradiate unit irradiates an X-ray. The determination unit determinates a tube current value...
US20120300898 GRID MODULE OF A SCATTERED-RADIATION GRID, MODULAR SCATTERED-RADIATION GRID, CT DETECTOR AND CT SYSTEM  
A grid module of a scattered-radiation grid is disclosed. The scattered-radiation grid includes a number of grid modules disposed next to one another with a plurality of webs, especially for use...
US20060222144 Method for operating a computed tomography apparatus to adjust attenuation valves from respective radiation detector elements  
In a method for operating a computed tomography apparatus for scanning a subject, a characteristic value is determined only from the attenuation values of selected detector elements of a detector...
US20130343512 ADAPTIVE CONTROL OF SAMPLING FREQUENCY FOR COMPUTED TOMOGRAPHY  
A method of contrast-enhanced computed tomography (CT) imaging can include repeatedly scanning a target region at a frequency during a session, the frequency initially being a first rate. After...
US20140161221 X-RAY COMPUTED TOMOGRAPHY APPARATUS  
An X-ray computed tomography apparatus according to an embodiment includes an X-ray tube, a bias power supply, and an X-ray control unit. The X-ray tube includes a cathode, an anode, and a grid...
US20110142193 X-RAY TUBE FOR MICROSECOND X-RAY INTENSITY SWITCHING  
An injector for an X-ray tube is presented. The injector includes an emitter to emit an electron beam, at least one focusing electrode disposed around the emitter, wherein the at least one...
US20140112431 X-RAY BEAM TRANSMISSION PROFILE SHAPER  
An imaging system (300) includes a radiation source (308) that emits radiation from a focal spot (312) in a direction of an examination region. The imaging system further includes a beam shaper...
US20080267346 X-Ray Imaging Apparatus and Method  
The present invention relates to an X-ray imaging apparatus and a corresponding X-ray imaging method, in particular for X-ray fluoroscopy and for an application where a characteristic feature...
US20140169519 Cone-beam CT Scanning  
Combined systems that rely on a single source able to switch between therapeutic emissions and diagnostic emissions for a cone-beam CT scanner can be improved by rotating the collimator during CT...
US20120230466 X-RAY CT SYSTEM  
An X-ray tube and an X-ray detector are arranged opposing one another. X-rays are irradiated from the X-ray tube by revolving around the subject. An X-ray image is obtained based on the X-rays...
US20100074395 METHOD TO DETERMINE PHASE AND/OR AMPLITUDE BETWEEN INTERFERING, ADJACENT X-RAY BEAMS IN A DETECTOR PIXEL IN A TALBOT INTERFEROMETER  
In a method to determine phase and/or amplitude between interfering, adjacent x-ray beams in a detector pixel in a Talbot interferometer for projective and tomographical x-ray phase contrast...
US20100002831 PORTABLE X-RAY DETECTOR WITH GRID SENSING UNIT AND X-RAY IMAGING SYSTEM FOR AUTOMATIC EXPOSURE SETTING FOR THE PORTABLE X-RAY DETECTOR  
It is described a portable X-ray system (200), which has sensing means for detecting whether an anti scatter grid (230) is attached to a portable detector (240) or not. The system is able to...
US20110058645 DYNAMIC ADJUSTABLE SOURCE COLLIMATION DURING FLY-BY SCANNING  
A medical imaging system (100) includes a radiation source (112) that rotates around an examination region about a longitudinal axis and emits radiation while translating in a direction of the...
US20120128120 SYSTEM AND METHOD FOR BREAST IMAGING USING X-RAY COMPUTED TOMOGRAPHY  
A system and method for breast imaging using x-ray computed tomography (CT) are provided. One system includes a rotating gantry, an x-ray source coupled to the gantry for generating an x-ray beam...

Matches 1 - 50 out of 148 1 2 3 >