Timing calibration using internal radiation and external radiation source in time of flight positron emission tomography

US11573339B2 · kind B2 · utility

Assignee

• CANON MEDICAL SYSTEMS CORPORATION · JP

Inventors

• Xiaoli Li · Vernon Hills, US
• Yi Qiang · San Francisco, US
• Kent C. Burr · Buffalo Grove, US
• Peng Peng · Vernon Hills, US

Key dates

• Filing date: Jun 22, 2020
• Grant date: Feb 7, 2023
• Expiry date: Jun 22, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T1/2985
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and system for providing improved timing calibration information for use with apparatuses performing Time of Flight Positron Emission Tomography scans. Relative timing offset, including timing walk, within a set of processing units in the scanner are obtained and corrected using a stationary limited extent positron-emitting source, and timing offset between the set of processing units is calibrated using an internal radiation source, for performing calibration.