1. A method for matching a characteristic of two or more sectors of a moving tissue to verify whether any portions thereof overlap, comprising: acquiring tissue data for at least a first sector and a second sector of said moving tissue; estimating a characteristic of at least a portion of said first sector and a characteristic of at least a portion of said second sector from said acquired tissue data; and matching said estimated characteristic of said portion of said first sector with said estimated characteristic of said portion of said second sector, to verify whether said portion of said first sector overlaps with said portion of said second sector.