Systems and methods for active optimized spatio-temporal sampling

摘要

Systems and methods which provide active optimized spatio-temporal sampling (AOSTS) for image generation are shown. Embodiments actively select one or more regions of interest (ROIs) in a multi-beam ultrasound sampling mode, to minimize temporal image artifacts in the ROIs and thereby provide AOSTS. Such selection of ROIs according to embodiments results in various multi-beam sampling parameters, such as the number of rays that are used, the spacing between the rays that are used, the width of the rays that are used, the sequence of the rays that are used, the angle of the rays that are used, etc., being selected to provide optimized spatio-temporal sampling with respect to the selected ROIs. Selection of ROIs according to embodiments may include selecting parameters such as position, size, shape, orientation, direction, rate of change, etc.

主权项

1. A system comprising:
a transducer adapted to form sampling rays for image generation; a processor; a non-transitory computer-readable storage medium storing instructions executable by the processor, the instructions including:
instructions for configuring the processor to:
receive an identification of a region of interest within a target volume;determine asymmetric ray angles for two or more frames of sampling rays that are to be fired from positions along the transducer;fire the sampling rays in an order and from positions on the transducer such that the paths of the sampling rays intersect at a plurality of points having different depths within an expanded region of interest that includes the received region of interest, wherein the positions, asymmetric angles and order of the sampling rays are selected to minimize a time between subsequent samples from different look angles in the expanded region of interest; anda compounding engine configured to collect data based on said fired sampling rays for each of the frames and compound said data to generate a compounded image including said expanded region of interest.