Radqual, LLC

University of Washington

Keith C Allberg

Paul Eugene Kinahan

Robert Kenneth Doot

Wendy McDougald

Catherine M Lockhart

Randall O'Kane, Sr

A universal mounting adapter is configured for interchangeably mounting a calibration source to two or more different imaging devices. The two imaging devices have different mounting brackets so they cannot be used with the same conventional calibration source. The present adapter includes mounting mechanisms for both types of bracket, allowing the attached calibration source to be moved from one imaging device to the other, while maintaining the calibration source in a prescribed geometry within the respective imaging device. This can be performed without the need for any tools.

Universal mounting system for calibration source for use in PET scanners

A method, system and kit for calibrating a PET scanner is disclosed. A first aliquot () containing a quantity of a radionuclide dispersed in a solid matrix material is provided, wherein the first aliquot is sized and configured to be received for measurement by a conventional dose calibrator. A second aliquot () containing a quantity of the radionuclide dispersed in the solid matrix material is sized configured to be scanned in a PET scanner. The radionuclide/matrix materials in the first and second aliquots are obtained from the same batch of material, such that the two quantities have the same radioactivity density, or are obtained from different cross-calibrated batches of material. In a method, the first aliquot is placed in a does calibrator () and the radioactivity is measured. The second aliquot is scanned in the PET scanner () and the intensity of the image is correlated with the known radioactivity measured by the dose calibrator and used to calibrate the PET scanner.

Calibration method and system for PET scanners

A method for calibration and a calibrator source standard calibrated by the method are provided. The calibration method includes providing mock syringes, or other simulated dose container. A first of the mock syringes is filled with a short half life positron emitter. A second of the mock syringes is filled with a longer half life radionuclide set in a matrix material such as an epoxy. The activities of the two syringes can be determined, ideally in the same ion chamber, for example, against a radioactive source standard having a half life greater than the first and second radionuclides. This allows a conversion factor to be determined which can be used for a calibrator source standard formed as for the second mock syringe (i.e., with the same type of container containing the longer half life radionuclide set in a matrix material), when the calibrator source standard is used as a proxy for calibrating a calibrator for use in determining the activity of a dose container of the same configuration containing a dose of the short lived radionuclide.

Simulated dose calibrator source standard for positron emission tomography radionuclides

A dose calibrator source standard includes a container comprising a cylindrical barrel and a support member which extends radially outward of the cylindrical barrel. A radioactive source-containing material is sealed within the container. The radioactive source-containing material comprising a radionuclide dispersed within a matrix material.

Syringe-shaped dose calibration source standard

A bag ( ) for transporting radioactive flood sources and the like is formed from a lightweight, multi-layer sheet material comprising a layer ( ) of a high-Z, radiation shielding material sandwiched between inner and outer layers ( ) of protective material. The radiation shielding material is preferably formed from a lead or tungsten composite comprising a lead or tungsten powder dispersed in a polymer matrix, such as a lead/vinyl composite. The flexible bag is lightweight, allowing the flood shield to be transported easily by handles ( ), without the need for maneuvering the bag along the floor on wheels.

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Weare, NH, United States of America

Keith C Allberg