High Dynamic Range Mammography Using a Restricted Dynamic Range FFDM

摘要

Methods of imaging a breast comprising acquiring a sequence of image data sets having differing exposure parameters; and combining the image data sets into a mammography image having greater dynamic range than the dynamic range of any single component image data set. Disclosed methods may further comprise determining an exposure parameter of one or more component image data sets prior to acquiring the sequence of image data sets. The step of determining an exposure parameter of one or more component image data sets may comprise determining exposure duration or an exposure irradiation level. Also disclosed are mammography apparatus and systems to obtain images according to the disclosed methods.

主权项

1. A method of imaging a breast comprising:
providing an x-ray source; providing a full field digital x-ray detector; acquiring a sequence of sub-images having differing exposure parameters by projecting x-rays from the source to the detector while varying an x-ray beam energy between a first sub-image and a second sub-image of the sequence of sub images; and combining all of the sub-images of the sequence of sub-images into a two-dimensional composite mammography image having greater dynamic range than the dynamic range of any single sub-image.