Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 8184767 | Imaging system and method with scatter correction An imaging technique is provided for acquiring scatter free images of an object. The technique includes acquiring a plurality of projection images of the object using a source and a detector oriented at a plurality of projection angles relative to the object, and ge... | 05/22/2012 |
| 8144829 | Cone-beam CT imaging scheme A general imaging scheme is proposed for applications of CBCT. The approach provides a superior CBCT image quality by effective scatter correction and noise reduction. Specifically, in its implementation of CBCT imaging for radiation therapy, the proposed approach a... | 03/27/2012 |
| 8081732 | Correcting transverse scattering in a multi-emitter CT scanner A multi-emitter computed tomography scanner is disclosed, including a plurality of x-ray emitter/detector arrangement pairs arranged offset at an angle to one another. In at least one embodiment, the detector arrangements of the pairs are designed to be energy selec... | 12/20/2011 |
| 8077826 | CT scanner with scatter radiation correction and method of using same A CT scanner with scatter correction device and a method for scatter correction are provided. The method of correcting CT images from artifacts caused by scattered radiation comprises affixing to the non-rotating frame of the CT gantry a plurality of shields for shi... | 12/13/2011 |
| 8045676 | Radiation imaging apparatus and processing method therefor A radiation imaging apparatus acquires information on a scattered radiation distribution at each rotation angle preliminarily determined for a rotation unit, based on images respectively obtained from a first radiation detection sensor having no grid, and a second r... | 10/25/2011 |
| 8009794 | Methods, apparatus, and computer-program products for increasing accuracy in cone-beam computed tomography Disclosed are methods, systems, and computer-product programs for increasing accuracy in cone-beam computed tomography (CBCT) by obscuring portions of the radiation source so that the radiation only passes through the specific areas of the patient related to the reg... | 08/30/2011 |
| 8000435 | Method and system for error compensation A method includes generating a plurality of scatter distributions based on geometric models having different object to detector distances, determining an imaged object to detector distance, and identifying a scatter distribution of the plurality of scatter distribut... | 08/16/2011 |
| 7957502 | Method for scaling scattered ray intensity distribution in multi bulbs X-ray CT and multi bulbs X-ray CT apparatus A method for scaling a scattered ray intensity distribution in a multi bulbs X-ray CT apparatus configured to irradiate a subject with X-rays from a plurality of X-ray generation sections, respectively and configure a cross-sectional image of the subject by detectin... | 06/07/2011 |
| 7940885 | Methods and apparatus for obtaining low-dose imaging In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the obj... | 05/10/2011 |
| 7920672 | X-ray detector gain calibration depending on the fraction of scattered radiation It is described a gain calibration for a two-dimensional X-ray detector (315), in which the gain coefficients for scattered radiation (307b) and direct radiation (307a) are measured or estimated separately. A weighed average may be... | 04/05/2011 |
| 7916829 | Computed tomography method The invention relates to a computed tomography method. The airgap associated with a projection direction is determined by determining, in the projection images, edge pixels which map object edges on a detector. By back-projecting the edge pixels in an object image s... | 03/29/2011 |
| 7907697 | System to estimate X-ray scatter A system may include determination of a first scatter kernel based on a first energy, a material-equivalent radiological thickness and a first diameter, wherein the first scatter kernel is not a monotonically decreasing function of radial coordinate, determination o... | 03/15/2011 |
| 7860208 | Scatter radiation correction in radiography and computed tomography employing flat panel detector In a method for correction of scatter radiation errors in radiography and computer tomography, using flat panel detectors, initially an estimation of a scatter radiation distribution Scor(y,z) is undertaken, and a standard correction term δpcor | 12/28/2010 |
| 7835485 | Method for scattered radiation correction in x-ray imaging devices A method is disclosed for scattered radiation correction in x-ray imaging devices having a number of x-ray sources that can be moved around an examination object in at least one scanning plane during a measurement pass. During the measurement pass, a number of x-ray... | 11/16/2010 |
| 7801266 | Method for speeding up the scattered radiation correction in a computed tomography system The invention relates to a method for speeding up the scattered radiation correction in a computed tomography system with a radiation source and a detector constructed in large-area format with a number of rows of detectors, by which an object is scanned from numero... | 09/21/2010 |
| 7778384 | Direct measuring and correction of scatter for CT Cone-beam CT scanners with large detector arrays suffer from increased scatter radiation. This radiation may cause severe image artefacts. An examination apparatus is provided which directly measures the scatter radiation and uses this measurement for a correction o... | 08/17/2010 |
| 7751525 | Method for correcting x-ray scatter in projection radiography and computer tomography The invention relates to a method for correcting x-ray scatter in projection radiography or in x-ray computer tomography, in which, for different observed objects, different scatter-correction convolution cores G are determined and in the examination of the respecti... | 07/06/2010 |
| 7680241 | Multi-tube imaging system scatter correction A computed tomography reconstruction method includes concurrently emitting radiation from at least two x-ray sources (14), switching the output state of each of the at least two x-ray sources (14) within a plurality of respective cross scatter sampling... | 03/16/2010 |
| 7660381 | Scatter compensation in an X-ray system Scatter compensation is achieved in an X-ray imaging system by providing collimation means in the form of shutters (12) to collimate the primary X-ray beam (1) such that the radiation (8) transmitted through a subject (4) to be imaged is ... | 02/09/2010 |
| 7636415 | Method for producing tomographic pictures with the aid of an X-ray computed tomography system with scattered radiation correction A method and an X-ray CT system are disclosed for producing tomographic pictures with the aid of an X-ray CT system including at least two X-ray sources arranged on a gantry with an angular offset to scan an examination object. In at least one embodiment of the meth... | 12/22/2009 |
| 7623618 | Method for scattered radiation correction in X-ray imaging, and X-ray imaging system for this purpose The present invention relates to a method for scattered radiation correction in X-ray imaging, and to an X-ray imaging system for carrying out the method. In the method, measurement signals t from an X-ray detector (9) are digitized and converted to logarithm... | 11/24/2009 |
| 7623617 | Method for scattered radiation correction of a CT system having at least two focus/detector systems arranged with an angular offset, and a CT system A method is disclosed for scattered radiation detection and/or for scattered radiation correction. In at least one embodiment, each radiation produced is provided with an individual temporal marker/variation of known magnitude, the change in the measured radiation b... | 11/24/2009 |
| 7609803 | Method for estimating scattered ray intensity in X-ray CT and X-ray CT apparatus A method for estimating a scattered ray intensity distribution in an X-ray CT apparatus, the method includes: irradiating a subject with X-rays; and configuring a cross-sectional image of the subject by detecting the X-rays passing through the subject, on the basis ... | 10/27/2009 |
| 7580499 | Coherent-scatter computed tomography Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is int... | 08/25/2009 |
| 7570732 | Methods and apparatus for obtaining low-dose imaging In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the obj... | 08/04/2009 |
| 7564938 | Scatter rejection for composite medical imaging systems Scatter effects are reduced in a radiographic imaging device, such as a digital slot scan mammographic imaging device, by reducing detected scatter and processing detector information to compensate for scatter effects. In one embodiment, a digital mammographic imagi... | 07/21/2009 |
| 7542540 | X-ray CT apparatus An X-ray CT apparatus includes X-ray tubes, slit mechanisms which are respectively provided for X-ray tubes and whose slit widths can be changed, two-dimensional array type X-ray detectors which form pairs with the X-ray tubes, a support mechanism which supports the... | 06/02/2009 |
| 7535987 | X-ray CT apparatus An X-ray CT apparatus includes a plurality of X-ray tubes, a plurality of X-ray detectors corresponding to the plurality of X-ray tubes, respectively, a support mechanism which supports the X-ray tubes and the X-ray detectors to allow the X-ray tubes and the X-ray d... | 05/19/2009 |
| 7519143 | Method and system for generating a scatter corrected X-ray image A Digital Radiograph (DR) acquisition system for generating a scatter-corrected X-ray image is provided. The DR acquisition system includes a digital detector configured to produce a two-dimensional (2D) X-ray image of an object of interest. The digital detector is ... | 04/14/2009 |
| 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 present invention, a high power tube may be used with a very long foc... | 03/10/2009 |
| 7496171 | Method for estimating the radiation scattered in a two-dimensional detector The radiation scattered in a two-dimensional detector (2) by a radiation is estimated by subjecting the detector (2) to at least two irradiations by inserting an array (3) of separated absorbers placed at variable distances (L) from the detector... | 02/24/2009 |
| 7486760 | Compact systems and methods for generating a diffraction profile An imaging system for generating a diffraction profile is described. The imaging system includes a gantry including an x-ray imaging system configured to generate an x-ray image of a substance and a scatter system configured to generate a diffraction profile of the ... | 02/03/2009 |
| 7471759 | Method for estimating the scattered radiation in X-ray tomography The method is analytical, involves a single irradiation of the object at a plurality of incidences in order to obtain a first three-dimensional image of the total radiation received by the detector, but a double irradiation of a set of calibration phantoms, such as ... | 12/30/2008 |
| 7463712 | Scatter correction for x-ray imaging using modulation of primary x-ray spatial spectrum Scatter radiation in an x-ray imaging system including an x-ray source and an x-ray detector is separated by using amplitude modulation to translate the spatial frequency of a detected x-ray beam to a higher frequency and provide separation from low frequency scatte... | 12/09/2008 |
| 7443945 | Method for scattered radiation correction in the case of an X-ray CT, and X-ray CT for applying this method It is proposed to estimate the scattered radiation on the basis of a sinogram, which is measured in any case. In at least one embodiment, a method includes determining the potential scattering site for each measuring beam from the object tangents in the sinogram and... | 10/28/2008 |
| 7440536 | Method for scattered radiation correction of a CT system A method for scattered radiation correction of a CT system, including at least two focus/detector systems operated angularly offset from one another, is disclosed. In the method, at at least one phantom, similar to the examined object at least in a subregion, for at... | 10/21/2008 |
| 7409034 | Radiation tomography apparatus An apparatus for improving the tomographic image quality by preventing the tomographic image contrast from degrading and preventing artifact from occurring even if many scattered radiations occur. An X-ray detection array obtains first detection data using the X-ray... | 08/05/2008 |
| 7396162 | Scatter correction for CT method and apparatus A method, system, and machine readable media are provided for correcting scatter in an image. The method comprises sequentially emitting radiation from a subset of radiation sources toward a detector array and measuring radiation on areas of the detector array not e... | 07/08/2008 |
| 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 |
| 7369640 | Radiation scanning of objects for contraband In one example, a scanning unit for examining contents of a cargo container is disclosed comprising a first path through the scanning unit for transport of a cargo container and one or more sources of respective beams of radiation. At least one of the one or more so... | 05/06/2008 |
