Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8058622 | Photomultiplier tube interface device The present invention provides a photomultiplier tube interface device (PMT), comprising a PMT module and a circuit substrate. The PMT module comprises a plurality of pins formed at a front end. A plurality of contacts are disposed on a lateral side of the circuit s... | 11/15/2011 |
| 8044357 | Radiation dosimeter and radiation dose computing program Light emitted in correspondence to ionizing radiation incident from a scintillator is fed through an optical fiber to a photoelectron multiplier tube by which it is converted to an electrical signal. The electrical signal is amplified by a signal amplifying circuit,... | 10/25/2011 |
| 7947957 | Radiation detection system using a multichannel spectrometer and method thereof The invention provides a data processing device for processing an reference background spectrum and a measurement spectrum of a radioactive material represented by a multichannel spectrum to acquire energy region information of detected gamma rays comprises: energy ... | 05/24/2011 |
| 7939807 | Scintigraphic device with spatial super-resolution A scintigraphic device includes: a collimator for receiving and directing electromagnetic radiation from a source; a scintillation structure associated with the collimator for receiving the electromagnetic radiation from the collimator and converting it into visible... | 05/10/2011 |
| 7763859 | Pileup rejection in an energy-dispersive radiation spectrometry system A method of detecting pileups includes testing an instantaneous slope of a preamplifier signal against a noise trigger value and, after the instantaneous slope has been determined to exceed the noise trigger value, identifying a first subsequent portion of the pream... | 07/27/2010 |
| 7732776 | Radiation imaging apparatus, drive method and program of the radiation imaging apparatus Provided is a radiation imaging apparatus including: a conversion unit including a plurality of pixels arranged two-dimensionally, wherein each of the pixels includes a conversion element for converting incident radiation into an electric charge and a switching elem... | 06/08/2010 |
| 7667204 | Low-power positron emission tomography (PET) imaging system The power consumed by a positron emission tomography (PET) imaging system is substantially reduced by utilizing an analog memory, such as a switch-capacitor analog memory, to sample and store analog values for a number of gamma ray signals so that only the stored an... | 02/23/2010 |
| 7573036 | Method and apparatus for processing of detector signals A method and an apparatus are disclosed for processing of detector signals, for example in nuclear-medical imaging. In at least one disclosed embodiment, the signals from N photodetectors are transmitted to a total of approximately M=ld(N) output lines, with the sig... | 08/11/2009 |
| 7541591 | Radiation imaging apparatus, system and method as well as program An object hereof is to restrain occurrence of artifact in an acquired radiation image with comparatively simple configuration without providing wiring between a radiation source and a radiation imaging apparatus to thereby obtain a radiation image with extremely goo... | 06/02/2009 |
| 7504635 | Gamma-ray camera system A scintillator crystal (26) based gamma-ray camera system is described. The gamma-ray camera system includes a spectra processing component for (34) providing improved energy resolution over that seen in conventional gamma-ray camera systems. The spect... | 03/17/2009 |
| 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 |
| 7420176 | SPECT apparatus A SPECT apparatus has a two-dimensional detector that detects radiations from RIs in a patient via a collimator. A correction processing unit corrects plural two-dimensional projection distributions with different projection angles, which are detected by the detecto... | 09/02/2008 |
| 7385200 | Re-binning method for nuclear medicine imaging devices A generalized rebinning method transforms SPECT projection data acquired with a first type of collimator into projection data as if it were acquired with a second type of collimator, for subsequent reconstruction using a 3-D algorithm devised for the second type of ... | 06/10/2008 |
| 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 |
| 7368717 | Density detection using real time discrete photon counting for fast moving targets A system for detecting and graphically displaying a contents of a fast-moving target object comprises: a radiation source, having a position such that at least a portion of radiation emitted from the radiation source passes through the fast-moving target object, the... | 05/06/2008 |
| 7365332 | Density detection using real time discrete photon counting for fast moving targets A system for detecting and graphically displaying a contents of a fast-moving target object comprises: a radiation source, having a position such that at least a portion of radiation emitted from the radiation source passes through the fast-moving target object, the... | 04/29/2008 |
| 7357575 | Telescoping table A telescopic table system (32) is used for imaging a subject in at least a first modality (12) and a second modality (14). The first modality is disposed adjacent to the second modality to align a subject receiving bore (24) of the first ... | 04/15/2008 |
| 7348907 | Range compression in oversampling analog-to-digital converters An analog-to-digital converter according to the invention is provided. The analog-to-digital converter preferably includes an analog input signal, a first reference signal, a second reference signal, and a range compression signal. The range compression signal is pr... | 03/25/2008 |
| 7348822 | Precisely adjusting a local clock Accurate correction of a local clock that avoids excessive drift in the local clock while avoiding an accumulation of quantization errors. A local clock according to the present techniques generates a local time by accumulating a sequence of rate coefficients select... | 03/25/2008 |
| 7345283 | Filtered back-projection algorithm for Compton telescopes A method for the conversion of Compton camera data into a 2D image of the incident-radiation flux on the celestial sphere includes detecting coincident gamma radiation flux arriving from various directions of a 2-sphere. These events are mapped by back-projection on... | 03/18/2008 |
| 7342232 | Device and method for digitizing pet radiation events A device and method used in the high resolution Positron Emission Tomography (PET) systems for digitizing radiation events for a scintillation camera and a data acquisition system. The device comprises a scintillation digitizer, including a plurality of comparators ... | 03/11/2008 |
| 7335887 | System and method for target inspection using discrete photon counting and neutron detection Described herein is system for the inspection of a target object. The system may include a gamma radiation source, a gamma detector and an image processor coupled to the gamma detector. When the inspection system is operating in a first active mode for imaging a tar... | 02/26/2008 |
| 7329872 | Spectral analysis method for detecting an element A method for detecting an element is described and which includes the steps of providing a gamma-ray spectrum which has a region of interest which corresponds with a small amount of an element to be detected; providing nonparametric assumptions about a shape of the ... | 02/12/2008 |
| 7312438 | Radiological imaging apparatus and timing correction method therefor A processing circuit, which carries out coincidence counting, acquires calibration data so that time delays of γ-ray detection signals from radiation detectors coincide with one another. A technique for acquiring calibration data faster and easily is provided to at... | 12/25/2007 |
| 7310405 | High-Z cast reflector compositions and method of manufacture A scintillator pack comprises an array of scintillator pixels and an x-ray absorbing layer disposed in inter-scintillator regions between the scintillator pixels. The x-ray absorbing layer acts to absorb x-rays and protect underlying regions of the inter-scintillato... | 12/18/2007 |
| 7304288 | Laser pulse counter Pulses of optical radiation are counted by a pulse counter in a way representative of its effects on tissue. An analog to digital converter digitizes detected optical radiation pulses and an integrator integrates the digitally detected pluses. The integrator has a t... | 12/04/2007 |
| 7304307 | PMT signal correlation filter A method of generating a filter (40) for a nuclear medicine system (20) where the filter selects valid detected radiation events for image processing. A dataset (60) is provided that is indicative of a plurality of emitted radiation events occur... | 12/04/2007 |
| 7286867 | Combined PET/MRI scanner A combined PET/MRI scanner generally includes a magnet for producing a magnetic field suitable for magnetic resonance imaging, a radiofrequency (RF) coil disposed within the magnetic field produced by the magnet and a ring tomograph disposed within the magnetic fiel... | 10/23/2007 |
| 7279685 | Radiation detector The invention is a digital radiation detector utilizing the stable timing functions of a microcontroller or plurality of microcontrolling devices to perform three independent functions. A first timer generates a continuous square wave output that is fed through a cl... | 10/09/2007 |
| 7279683 | Distance measurement apparatus of gamma ray source using multilayered ray detector Rays incident upon a plurality of detection plates arranged along a normal direction are detected. A distance between the ray and the ray source is estimated based on the number of counted rays detected by each detection plate, and each interval distance of the dete... | 10/09/2007 |
| 7274321 | Analog to digital converter A analog to digital converter, comprising: an input for receiving an input signal to be digitized; a first converter core for performing a first part of an analog to digital conversion, and for outputting a first digital result; a first residue calculator for calcul... | 09/25/2007 |
| 7274023 | Gamma-radiation detector module for portal applications The gamma-radiation module includes a housing having a box-like container and a cover for hermetically sealing a pair of cylinders within the housing. Each cylinder includes scintillation material and a photomultiplier tube on a common cylindrical axis. The hermetic... | 09/25/2007 |
| 7265353 | Data acquisition, control, and spectral analysis software for multi-channel analyzers A system for detecting and identifying low-level (weak) radioactive sources moving past stationary detectors. The system, which can detect low-level sources moving at speeds of 30 m/s (about 70 mph), uses the differences between background counts and gamma counts fr... | 09/04/2007 |
| 7262416 | Gamma camera with dynamic threshold A method of locating an event with a gamma camera (12) of an emission computed tomography (ECT) scanner (10) is provided. The gamma camera (12) includes a matrix of sensors (22) situated to view the event. The sensors (22) have res... | 08/28/2007 |
| 7253416 | Radiation detector and detection method, and medical diagnostic apparatus employing same In a detector arrangement for a medical diagnosis apparatus as well as a medical imaging diagnostic method, radiation quanta striking a detector are detected and evaluated with spatial resolution. The use of collimators is thereby omitted, such that radiation quanta... | 08/07/2007 |
| 7253387 | List mode multichannel analyzer A digital list mode multichannel analyzer (MCA) built around a programmable FPGA device for onboard data analysis and on-the-fly modification of system detection/operating parameters, and capable of collecting and processing data in very small time bins ( | 08/07/2007 |
| 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 |
| 7244947 | Neutron detector with layered thermal-neutron scintillator and dual function light guide and thermalizing media A broad spectrum neutron detector has a thermal neutron sensitive scintillator film interleaved with a hydrogenous thermalizing media. The neutron detector has negligible sensitivity to gamma rays and produces a strong and unambiguous signal for virtually all neutro... | 07/17/2007 |
| 7242004 | Image correction method, image correction apparatus, and image correction program The image correction method according to an embodiment of the present invention includes the steps of: (a) generating an absorption correction map by replacing a CT value of each pixel of a CT image with a corresponding linear absorption coefficient and replacing th... | 07/10/2007 |
| 7238946 | Nuclear imaging system using scintillation bar detectors and method for event position calculation using the same A gamma camera having a scintillation detector formed of multiple bar detector modules. The bar detector modules in turn are formed of multiple scintillation crystal bars, each being designed to have physical characteristics, such as light yield, to achieve a suffic... | 07/03/2007 |
