Breast density assessment

摘要

The present invention relates to mammography. To provide breast density assessment with improved accuracy in the results, a method (100) is proposed for providing mammography information about an object of interest, the region of interest comprising a tissue structure, with the following steps: a) acquiring (110) first image data (112) with first image acquisition parameters (114), wherein the first image parameters are adapted to a first radiation spectrum of a dual energy mode; and wherein the first image acquisition is performed with a low X-ray dosage of a pre-scan; b) acquiring (116) second image data (118) with second image acquisition parameters (120), wherein the second image parameters are adapted to a second radiation spectrum of the dual energy mode, and wherein the second image acquisition is performed with a higher X-ray dosage than the first image acquisition, and wherein the second image acquisition is a Mammography scan; c) performing (122) a dual energy basis material decomposition (124) based on the first and second image data to generate decomposed basis material image data (126); and d) deriving (128) a density information (130) of the tissue structure of the region of interest from the decomposed basis material image data; and providing (132) the density information to a user.

主权项

1. An X-ray imaging system comprising: an X-ray image acquisition device with an X-ray source and an X-ray detector; a processing unit; and an interface unit; wherein the X-ray image acquisition device is adapted to acquire first image data with first image acquisition parameters; wherein the first image parameters are adapted to a first radiation spectrum of a dual energy mode; and wherein the X-ray image acquisition device is adapted to perform the first image acquisition with a low X-ray dosage of a pre-scan; and wherein the X-ray image acquisition device is adapted to acquire second image data with second image acquisition parameters; wherein the second image parameters are adapted to a second radiation spectrum of the dual energy mode; and wherein the X-ray image acquisition device is adapted to perform the second image acquisition with a higher X-ray dosage than the first image acquisition, and wherein the second image acquisition is a mammography scan; wherein the processing unit is adapted to perform a dual energy basis material decomposition based on the first and second image data to generate decomposed basis material image data; and to derive a density information of the tissue structure of the region of interest from the decomposed basis material image data; and wherein the interface unit is adapted to provide the density information to a user.