Timing calibration for time-of-flight (TOF) PET using positron-emitting isotopes and annihilation targets
US8796637B1 · kind B1 · utility
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3References
48Claims
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Key dates
| Filing date | May 24, 2013 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2985
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and system for calibrating an imaging system in which a positron-emitting radioisotope source is arranged in or adjacent to an imaging region of the imaging system, an annihilation target is arranged at a position separated from the positron-emitting radioisotope source by a predetermined distance, coincident event pairs resulting from annihilation of positrons at the annihilation target are detected, a calibration time offset for a detector element in the imaging system is calculated based on the detected coincident event pairs, and the detector element is calibrated with the completed calibration time offset.
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