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| Number | Title | Issue Date |
| 8188435 | Specific absorption rate measurement and energy-delivery device characterization using thermal phantom and image analysis A system for use in characterizing an energy applicator includes a test fixture assembly. The test fixture assembly includes an interior area defined therein. The system also includes a thermally-sensitive medium disposed in the interior area of the test fixture ass... | 05/29/2012 |
| 8164062 | Scintillator operation and control A method for reducing scintillator afterglow. Methods for reducing afterglow include conditioning a scintillator by exposing it to high flux densities of ionizing radiation. One technique includes operating an x-ray tube at elevated amperage. ... | 04/24/2012 |
| 8153983 | Gadolinium halide scintillators The present invention concerns scintillator compositions comprising gadolinium halide and a dopant. The gadolinium halide and dopant material (e.g., GdI3:Ce) has surprisingly good characteristics including high light output, high gamma-ray stopping effici... | 04/10/2012 |
| 8138481 | Determination of a spatial gain distribution of a scintillator A method for providing information about a spatial gain distribution of a scintillator for a primary radiation is provided which does not require the irradiation of the scintillator with the primary radiation. The method comprises the step of irradiating the scintil... | 03/20/2012 |
| 8110805 | Iterative algorithms for crystal efficiencies estimations from TOF compressed normalization data Time-of-flight (TOF) clinical data collected during a PET scan are very sparse and have significant size. These data undergo TOF axial rebinning and azimuthal mashing if histogrammed data-based reconstruction algorithms are used. In a clinical environment, TOF compr... | 02/07/2012 |
| 8089048 | Discrimination-enhanced fiber-optic scintillator radiation detector A fiber-optic scintillator radiation detector includes a multitude of optical fibers that each include an optical core. The optical cores are spaced apart from one another by an interposer material. In various embodiments, the interposer material has an average atom... | 01/03/2012 |
| 8089047 | Metal-organic scintillator crystals for X-ray, gamma ray, and neutron detection New metal-organic materials are useful as scintillators and have the chemical formula LX3(CH3OH)4 where L is Y, Sc, or a lanthanide element, and X is a halogen element. An example of the scintillator materials is CeCl3(CH | 01/03/2012 |
| 8084741 | Configurable coincidence pairing and filtering system and method for positron emission tomography A method of processing positron emission tomography (PET) information obtained from a PET detector having a plurality of detector regions, each detector region having at least one detector module and a corresponding regional collector, the method including the steps... | 12/27/2011 |
| 8080799 | Method for positron emission tomography and PET scanner Disclosed is a method for positron emission tomography and to a PET scanner. The positron emission tomography method employs the following steps: a) two photons are emitted in opposite directions by an annihilation event in the sample, b) at least two of a plurality... | 12/20/2011 |
| 8076644 | Methods and systems for determining a medical system alignment Methods and systems for performing a patient scan using a three-dimensional (3D) cylindrical Positron Emission Tomography (PET) imaging system are provided. The method includes acquiring a count-rate profile of a brain, repositioning at least one of a detector and t... | 12/13/2011 |
| 8049175 | Scintillator operation and control A method and system for reducing scintillator afterglow. Methods for reducing afterglow include conditioning a scintillator by exposing it to high flux densities of ionizing radiation. One technique includes operating an x-ray tube at elevated amperage. ... | 11/01/2011 |
| 8008625 | Method and apparatus for high-sensitivity single-photon emission computed tomography A method and apparatus are disclosed for high-sensitivity Single-Photon Emission Computed Tomography (SPECT), and Positron Emission Tomography (PET). The apparatus includes a two-dimensional (2D) gamma detector array that moves to different positions in a three-dime... | 08/30/2011 |
| 8003948 | Data acquisition for positron emission tomography A method for estimating the start time of an electronic pulse generated in response to a detected event, for example the start time for pulses received in response to photon detection in positron emission tomography, includes providing a detector that detects an ext... | 08/23/2011 |
| 7964848 | Skin contamination dosimeter A technique and device provides absolute skin dosimetry in real time at multiple tissue depths simultaneously. The device uses a phoswich detector which has multiple scintillators embedded at different depths within a non-scintillating material. A digital pulse proc... | 06/21/2011 |
| 7902510 | Radionuclide detection devices and associated methods Radionuclide detection devices comprise a fluid cell comprising a flow channel for a fluid stream. A radionuclide collector is positioned within the flow channel and configured to concentrate one or more radionuclides from the fluid stream onto at least a portion of... | 03/08/2011 |
| 7807973 | Pileup rejection in an energy-dispersive radiation spectrometry system A method of detecting a pileup in an energy-dispersive radiation spectrometry system, wherein a filter of the system generates a first pulse in response to a preamplifier signal, and wherein the system has one or more fast channels having an energy of full efficienc... | 10/05/2010 |
| 7649175 | Analog to digital conversion shift error correction A method for correcting energy values of pulses from a nuclear medicine camera for errors due to Analog to Digital conversion shift includes determining a relationship between a subset of samples selected from a set of samples from the pulse, the relationship being ... | 01/19/2010 |
| 7612342 | Very bright scintillators The present application discloses methods and devices for increasing the light output of a scintillator. Using the methods of the present disclosure, a very high intensity electric field is applied to a scintillator exposed to ionizing radiation and provides light o... | 11/03/2009 |
| 7439515 | Pipeline processing of pulse pile-up correction in a nuclear medicine imaging system Correction of scintillation event data from a nuclear medicine imaging system for effects of pulse pile-up is carried out by separating event data packets into total energy and individual detector energy data packets, executing pile-up correction algorithms on each ... | 10/21/2008 |
| 7414245 | Scintillator-based micro-radiographic imaging device A scintillation based imaging system. The device utilizes a single-crystal inorganic scintillator to convert ionizing radiation to light in a spectral range or ranges within the visible or ultraviolet spectral ranges. The conversion takes place inside the single cry... | 08/19/2008 |
| 7397034 | Method of enhancing performance of doped scintillation crystals A method for enhancing the light yield of a doped scintillation crystal may include a reducing step if the crystal includes a dopant, such as cerium in a first oxidation state, such as the 4+ state. The scintillation crystal may include a rare earth silicate. The re... | 07/08/2008 |
| 7381956 | Detector element for spatially resolved detection of gamma radiation The invention relates to a detector element (1) for gamma radiation, which is particularly suitable for use in a PEF apparatus. The detector element (1) consists of two or more different conversion units (11, 12), which react to the absorption o... | 06/03/2008 |
| 7378659 | Systems and methods to localize optical emission in radiation detectors A method for identifying localized optical emission is disclosed. The method involves identifying a region, which corresponds to a plurality of scintillator units of a scintillator, on a position sensitive photodetector that is impacted by one or more photons. The m... | 05/27/2008 |
| 7368722 | Method and apparatus for detecting ionizing radiation A method for detecting ionizing radiation with the aid of a scintillation counter and a photomultiplier using an inorganic solid-matter scintillator that incorporates at least one decay time component greater than 100 ns and measures the photons emitted by the scint... | 05/06/2008 |
| 7365333 | LuYXascintillators The present invention concerns scintillators comprising a composition having the formula LuxY(1−x)Xa3, wherein Xa is a halide, and a dopant. The LuxY(1−x)Xa3 and dopant material has surprisingly g... | 04/29/2008 |
| 7355180 | Radiation detector and a method of manufacturing the detector A scintillator array has a compact, two-dimensional arrangement of scintillators partitioned by light reflecting elements and light transmitting elements interposed between the scintillators. That is, the scintillator array has a lattice frame in the form of a cross... | 04/08/2008 |
| 7349517 | System for measuring burn-out of fuel elements of a high-temperature reactor The burnout of a fuel element in a reactor is determined by first transferring a fuel element from a reactor to a measuring position and then subjecting the transferred fuel element at the position to a neutron flux. A first detector measures the total γ radiation ... | 03/25/2008 |
| 7342231 | Detection of coincident radiations in a single transducer by pulse shape analysis Pulse shape analysis determines if two radiations are in coincidence. A transducer is provided that, when it absorbs the first radiation produces an output pulse that is characterized by a shorter time constant and whose area is nominally proportional to the energy ... | 03/11/2008 |
| 7339174 | Combined slit/pinhole collimator method and system Collimator assemblies that include an inner combined collimator and an outer collimator are provided. The inner combined collimator includes a first portion having one or more slit apertures therein, and a second portion having one or more pinhole apertures therein.... | 03/04/2008 |
| 7309857 | Gamma ray detectors having improved signal-to-noise ratio and related systems and methods for analyzing materials in an oil well A gamma ray detector assembly for placement in a logging tool in a borehole can include a first gamma ray detector elongated along an axis and having a void extending along the axis. A second gamma ray detector conforms to at least a portion of the void. The first a... | 12/18/2007 |
| 7279120 | Doped cadmium tungstate scintillator with improved radiation hardness This invention provides novel cadmium tungstate scintillator materials that show improved radiation hardness. In particular, it was discovered that doping of cadmium tungstate (CdWO4) with trivalent metal ions or monovalent metal ions is particularly effe... | 10/09/2007 |
| 7265354 | Semiconductor scintillation high-energy radiation detector A high-energy radiation detector is disclosed which uses a semiconductor material to absorb high-energy radiation and emit secondary light in response. The semiconductor is designed to be largely transparent for the interband light it emits so that the generated sec... | 09/04/2007 |
| 7247855 | Portable nuclear detector A portable nuclear material detector generally includes a scintillating fiber radiation sensor, a light detector, a conditioning circuit, a frequency shift keying (FSK) circuit, a fast Fourier transform (FFT) circuit, an electronic controller, an amplitude spectral ... | 07/24/2007 |
| 7214942 | Gamma ray detectors having improved signal-to-noise ratio and related systems and methods for analyzing bulk materials An assembly for detecting gamma rays from a bulk material defines a radiation region. A radiation source is positioned adjacent the radiation region and configured to irradiate the bulk material in the radiation region. A first gamma ray detector is positioned adjac... | 05/08/2007 |
| 7193208 | Time-of-flight capable high resolution pet detector An array of position-sensitive avalanche photodiodes is provided in which output signal contacts from corners of each photodiode are grouped in common for readout. Each photodiode may be provided on a single wafer or chip, with photodiodes being separated by a trenc... | 03/20/2007 |
| 7194360 | Method of determining radioactive nuclides A method of simply and quickly determining α-ray releasing nuclides having long half-life without carrying out a chemical separation is provided. By inputting a data of pulses incident to an α-ray detector in a computer, obtaining time distribution of the i... | 03/20/2007 |
| 7180069 | Radiation detector The present invention provides a radiation detector capable of detecting the radioactive substance accumulated in the tissue inside a body by inserting a detection unit into blood vessels. In the radiation detector of the present invention, comprising a detection un... | 02/20/2007 |
| 7157014 | Method for producing a high resolution detector array A method for producing a high resolution detector array so as to provide very high packing fraction, i.e. the distance between scintillator elements is minimized so the detector efficiency will be higher than is currently achievable. In the preferred embodiment of t... | 01/02/2007 |
| 7151261 | Method of enhancing performance of cerium doped lutetium orthosilicate crystals and crystals produced thereby A method for enhancing the light yield of a single crystal of cerium doped lutetium orthosilicate (LSO) in response to irradiation with high energy radiation includes diffusing oxygen into the crystal by heating the crystal for a period of time in an ambient contain... | 12/19/2006 |
| 7152002 | Method and apparatus for analysis of elements in bulk substance A substance analyzer utilizing Prompt Gamma Neutron Activation Analysis for identifying characteristics of a substance and method of manufacturing the same are disclosed. The analyzer is small enough to be portable and to allow its use in many applications where cur... | 12/19/2006 |
