SYSTEM AND METHOD FOR DATA DRIVEN GATING OF MULTIPLE BED POSITIONS

摘要

A method implemented using at least one processor includes receiving time-varying image dataset generated by a medical imaging modality. The image dataset corresponds to a bed position and is affected by quasi-periodic motion data. The method also includes applying a signal decomposition technique to the time-varying image dataset to generate a plurality of dataset components and a plurality of motion signals. The method also includes determining reference data based on the time-varying image dataset, wherein the reference data is representative of a direction of the quasi-periodic motion. The method further includes deriving polarity of each of the plurality of motion signals based on the reference data to generate a plurality of sign corrected motion signals. The method also includes determining a gating signal corresponding to the bed position based on at least one of the plurality of sign corrected motion signals.

主权项

1. A method, comprising:
receiving a time-varying image dataset corresponding to a bed position, wherein the time-varying image dataset is generated by a medical imaging modality and affected by a quasi-periodic motion data; applying a signal decomposition technique to the time-varying image dataset to generate a transformed dataset, wherein the transformed dataset comprises a plurality of dataset components and a plurality of motion signals; determining a mean image based on the time-varying image dataset; determining a first shifted image by shifting the mean image in a first direction and a second shifted image by shifting the mean image in a second direction opposite to the first direction; determining a reference data based on a difference of the first shifted image and the second shifted image; deriving a polarity of each of the plurality of motion signals based on the reference data and the plurality of dataset components to generate a plurality of sign corrected motion signals; and determining a gating signal corresponding to the bed position based on at least one of the plurality of sign corrected motion signals.