Back to results
US 2008/0164875 A1Published application
Exclusion of compromised pet data during simultaneous pet-mr acquisition
AssigneeGeneral Electric Company
InventorsRobert H. Haworth, Steven G. Ross, Charles W. Stearns, Jason A. Polzin, Alexander Ganin
Life of this patent
Estimating the term…
Abstract
A system and method for simultaneously acquiring PET and MR data from a subject of interest with a hybrid PET-MR scanner includes monitoring transmission times of RF and gradient coils of the MR equipment and blanking segments of the PET data stream accordingly. By excluding PET data acquired during active MR transmissions, the remaining PET data used for image reconstruction will provide improved PET image quality.
Claims24
An imaging scanner comprising:
- a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing field therein;
- an RF coil assembly coupled to a pulse generator to emit an RF pulse sequence and arranged to receive resulting MR signals from a subject of interest in the bore;
- a detector positioned to detect PET emissions from the subject of interest;
- a coincidence processor configured to receive an output from the detector;
- and
- a blanking control configured to identify periods during which PET detection may be compromised.
3 more elements
An image acquisition controller comprising:
- an MR transmission monitor configured to output signals indicative of MR transmissions;
- and
- a processing unit programmed to:
- receive the signals from the MR transmission monitor;
- generate a timing sequence identifying MR transmission times based on the signals;
- and
- exclude data from a PET image reconstruction according to the timing sequence.
4 more elements
A method for PET imaging comprising:
- administering a PET agent to a subject of interest;
- detecting positron emissions from the subject of interest to generate a stream of PET data;
- excluding MR-compromised PET data from the stream of PET data;
- and
- reconstructing PET images from the stream of PET data.
2 more elements
Dependencies are inferred from the claim text.