Method and apparatus for filtering spatial and temporal data visualization of intravascular ultrasound images.

摘要

A method for spatial and temporal combined real-time filtering of some ultrasound image data in an area contained for identifying non-blood (tissue) and blood, which comprises generating a binary two-dimensional mask indicating both regions blood and non-blood regions in an image; characterized in that (a) the frame is a central frame in time of a sequence of consecutive frames (12) within a certain time window, each such frame consists of some intensity data in two spatial dimensions the step of generating a two-dimensional binary mask comprising: (i) transforming a two-dimensional array of intensity data into a sequence of consecutive frames (12) in a frequency domain, the two-dimensional array has a dimension spatial and a temporal dimension; and (ii) analyzing the resulting frequency transform to denominate certain pixels as blood region; and (b) the method further comprises the step of filtering the center frame by applying said binary to a two-dimensional block of frame data including a raster data processed to the center frame and adjacent frames in the sequence mask , and processed frame data of a frame previous output, to obtain a new output frame.