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7619222 |
Automatic radioactivity analyzer of mixed liquid beta emitter
The present invention relates to an automatic radioactivity analyzer of mixed liquid beta emitter which comprises: a sample preparation part ( 1, 2, 3, 4, 5, 6 , and 7 ) for extracting a liquid...
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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...
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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...
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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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7511278 |
Apparatus for detecting particles
An apparatus for detecting particles, comprising a plurality of electrically conductive structures disposed on a support element. The structures are electrically insulated from one another and each...
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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...
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7502442 |
X-ray inspection system and method
An X-ray inspection system in which a thin X-ray absorber is placed upstream of an object under investigation so as to remove low energy X-rays, typically below 0.5 MeV. The absorber may be a sheet...
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7462837 |
Nuclide identifier system
In a preferred embodiment, a method of identifying nuclides, including the steps of: determining spectral continuum via a peak erosion process to render a residual peak spectrum; filtering a...
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7456409 |
Low noise image data capture for digital radiography
A low noise digital radiography image capture system employs a two-dimensional array of pixel sites in the image capture panel with each site having an analog-to-digital converter to digitize...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7202479 |
Method for assigning a pulse response to one of a plurality of pulse types with different decay times and device for carrying out said method
A method for assigning a pulse profile, in particular a pulse profile of a scintillation detector having at least two scintillation materials with different decay characteristics, to one of a...
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7199370 |
Device and method for digitizing gamma ray energy and characterizing peak time and decay time constant without the use of ADC
A device and method used in high resolution positron emission tomography (PET) systems for digitizing gamma ray energy and characterizing peak time and decay time constant, models a voltage pulse...
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7186984 |
Method for quantifying the radioactivity of living structures of small dimensions by employing emission tomography
The invention relates to a process of quantification of the radioactivity of living tissue structures by emission tomography to determine the concentration of a radioactive tracer. It includes the...
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7164130 |
Signal enhancement module
Events of interest are detected within a gamma ray detection system. Characteristics of undesired signals, including a multiplicity of events within the signal, a density of events within the...
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7132664 |
Method and apparatus for improving PET detectors
The present invention is directed to a system, method and software program product for implementing 3-D Complete-Body-Screening medical imaging which combines the benefits of the functional imaging...
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7109490 |
Method and medical device designed for implementing this method
A method is for restoring a signal of a defective channel of a beam detector, which has a multitude of channels and by means of which projections are recorded from different directions of...
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7102137 |
Method and apparatus for improving slice to slice resolution by staggering cells in the Z-axis
The present invention provides a CT detector module with cell summing in the Z-direction and cell staggering in the X-direction. The present invention also provides a method for implementing the...
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7094203 |
Medical imaging apparatus for detection of gamma rays and reflected ultrasonic waves
Gamma rays obtained from radioisotope administered to an examinee are detected by a gamma ray information-detecting unit so that a first tomographic image obtained therefrom is formed on a CRT....
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7095028 |
Multi-slice flat panel computed tomography
A method for collecting signals from a detector that has a plurality of lines of image elements includes sending a control signal to a gate driver to select transistor gates for two or more lines...
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7045787 |
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...
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7038212 |
Method and system for normalization of a positron emission tomography system
A method and system for normalization of a positron emission tomography system is provided. The method includes acquiring three-dimensional normalization scan data from a positron emission...
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7026621 |
System and method for producing a detector position map
The invention relates to a system and method for generating a detector position map for an array of detectors. The detector position map comprises a map which converts measured position coordinates...
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7015477 |
Filtered backprojection algorithms for compton cameras in nuclear medicine
The present invention provides methods and apparatuses for constructing observed data from a Compton camera in order to provide a three-dimensional image of a radiopharmaceutical source...
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6987270 |
Method to account for event losses due to positron range in positron emission tomography and assay of positron-emitting isotopes
A method of quantitative positron emission analysis includes accounting for the loss of positron-electron annihilation events and quantitative inaccuracies in positron emission assays.
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6972425 |
Radiation image radiographing system
The invention concerns a network system for radiographing radiation images. The network system includes a plurality of radiation-image reading apparatus to read the radiation images stored in...
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6956215 |
Method of localizing a scintillation event in a scintillation camera
A method of localizing a scintillation event in a scintillation camera is disclosed. The method comprises steps of (a) assuming an ideal situation where the photomultiplier tubes of the camera...
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6936822 |
Method and apparatus to prevent signal pile-up
Methods and apparatuses for obtaining position and energy information without pileup. Signal integration, which is triggered by a present event, stops when a subsequent event is detected. A...
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6900441 |
Multiple simultaneous acquisition of gamma camera data sets
A gamma camera system is described in which multiple simultaneous acquisitions are performed based upon different characteristics for event data acquired by a common gantry behavior. The event data...
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6897452 |
Apparatus for irradiating material
An apparatus ( 1 ) for irradiating material comprises a single UV, pulsed brigth white light or IR lamp ( 2 ) with a centrally disposed receptacle ( 3 ) for containing material to be irradiated....
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6852980 |
On-line DOI rebinning for LSO PET/SPECT spatial resolution
A method and apparatus for on-line DOI rebinning for LSO PET/SPECT to improve spatial resolution, for use in a hybrid Positron Emission Tomography (PET)/Single Photon Emission Computed Tomography...
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6828563 |
Method for temperature compensation of an image sensor sensitivity
A method for temperature compensation of sensitivity of an image including photosensitive spots each with a photodiode connected to read circuits. The photosensitive spots are divided into...
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6740883 |
Application of scatter and attenuation correction to emission tomography images using inferred anatomy from atlas
A method of applying scatter and attenuation correction to emission tomography images of a region of interest of a patient under observation comprises the steps of aligning a three-dimensional...
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6728583 |
User interface for a gamma camera which acquires multiple simultaneous data sets
A gamma camera system is described having a user interface by which protocols can be set up for the simultaneous acquisition of different views. Pull-down menus prevent the selection of...
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6723993 |
Event localization and fall-off correction by distance-dependent weighting
A nuclear camera system includes a detector ( 12 ) for receiving radiation from a subject ( 14 ) in an exam region ( 16 ). The detector ( 12 ) includes a scintillation crystal ( 20 ) that converts...
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6664543 |
Continuous sampling and digital integration for PET scintillation
An apparatus and method for determining the total energy of a continuously under-sampled energy signal resulting from an annihilation event detected by a positron emission tomograph (PET) scanner....
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6635878 |
Gamma camera with automatic adjustment of the energy spectrum
A nuclear camera system is provided in which the energy spectrum peaks identified by a camera detector head are automatically adjusted to account for drift and other sources of inaccuracy....
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6624431 |
High collection angle short wavelength radiation collimator and focusing optic
The present invention provides a high gain collimator producing generally uniform intensity profiles for use in lithography and other applications. A focusing optic is also provided. The collimator...
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6608311 |
Image sensor with integrated amplifiers for data acquisition
An image detector using arrays of photodiodes, and in particular to a radiological image detector. In the image detector, all the photodiodes of one and the same array are linked to adapter...
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