General Electric Company

Dinko Eduardo Gonzalez Trotter

John Eric Tkaczyk

Jeffrey Wayne Eberhard

Bernhard Erich Hermann Claus

John Patrick Kaufhold

Serge Muller

Ravindra Mohan Manjeshwar

James Vradenburg Miller

Alexander Ganin

Thomas Baby Sebastian

Serge Louis Wilfrid Muller

Ricardo Scott Avila

Floribertus Philippus Martinus Heukensfeldt Jansen

Jerry A Thomas

Methods and systems for imaging a patient are provided. The method includes determining a location of a volume of interest within the patient and acquiring a plurality of frames of emission data, at least one frame including the volume of interest. The method further includes determining a time-of-flight (TOF) information of at least a portion of the annihilations detected along a line of response between corresponding coincidence detectors and generating an image of the patient from the emission data using the determined TOF information.

Method and system for imaging a patient

Embodiments of methods, apparatuses, devices, and/or systems for determining matter properties are described.

Method and apparatus for measuring matter properties

A method of quantitative positron emission analysis includes accounting for the loss of positron-electron annihilation events and quantitative inaccuracies in positron emission assays.

Method to account for event losses due to positron range in positron emission tomography and assay of positron-emitting isotopes

A method of estimating an asymmetrical scatter signal distribution wherein asymmetry is introduced by angular incidence of radiation, which has been emitted from a source and transmitted through an object to be imaged, on a detector, is disclosed. This method includes, in an embodiment, modifying scatter that would be derived wherein the radiation is directly incident on the detector with zero degrees of inclination, using an asymmetry factor which indicates the shape and magnitude of the scatter signal distribution and which varies with an angle at which the radiation is incident on the detector, a mean attenuation coefficient of the object, and a distance the radiation has traveled through the object. The estimated scatter provides for correction of scatter in a image.

Scatter correction method for non-stationary X-ray acquisitions

A method for estimating a material composition of an imaged object using an imaging system. The imaging system includes a radiation source and a digital detector. The method also includes scanning a plurality of calibration phantoms with varying material composition to acquire a plurality of reference calibration images, estimating an attenuation coefficient thickness product for each pixel in the reference calibration images, and estimating a material composition of a region of interest using the estimated pixelwise coefficient thickness product.

Methods and apparatus for estimating a material composition of an imaged object

A method for calibration of an imaging system includes providing a calibration phantom system including a first phantom element material block having a first surface at a first height, wherein the first phantom element material block at least partially includes a first material having a first attenuation coefficient. Providing a calibration phantom system also includes providing a second phantom element material block having a second surface at a second height different than the first height, the second phantom element material block at least partially including a second material having a second attenuation coefficient different than the first attenuation coefficient, wherein the first phantom element material block and said second phantom element material block are co-positioned on a detector. The method also includes imaging the calibration phantom system to obtain phantom images, processing the phantom images, and extracting a plurality of calibration values from the processed phantom images.

Method and apparatus for calibrating an imaging system

A method for removing scatter in an image includes acquiring data of an object of interest, and using an iterative equation including a thickness-dependent kernel modulation factor to reconstruct an image of the object.

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Clifton Park, NY, United States of America

Dinko Eduardo Gonzalez Trotter