Single-shot dual-energy subtraction mammography with electronic spectrum splitting : Feasibility

• We present a single-shot dual-energy subtraction mammography technique using an energy sensitive photon counting detector. An electronic threshold near the middle of the X-ray spectrum discriminates between high- and low-energy photons, and allows the simultaneous acquisition of high- and low-energy images which can be combined to suppress anatomical clutter. By setting the electronic threshold close to 33.2 keV (the k-edge of iodine) the system is optimized for dual-energy contrast-enhanced imaging of breast tumors. This method eliminates the need for separate exposures which might otherwise lead to motion artifacts. The method is illustrated in phantom images.

Nyckelord

dual-energy imaging

digital mammography

contrast-enhancement

physics

breast

breast-diagnosis

breast radiography

technology

digital mammography

contrast-media

experience

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