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.
Bornefalk
Hans
H
Department of Physics, KTH, SE-100 44 Stockholm, Sweden. bornefalk@particle.kth.se
Lewin
John M
JM
Danielsson
Mats
M
Lundqvist
Mats
M
D001185:Artificial Intelligence; D003198:Computer Simulation; D001330:Electronic Data Processing; D005240:Feasibility Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008327:Mammography / Q000295:instrumentation / Q000379:methods; D019047:Phantoms, Imaging; D017785:Photons; D015900:Radiography, Dual-Energy Scanned Projection / Q000295:instrumentation / Q000379:methods; D012107:Research Design; D013382:Subtraction Technique / Q000295:instrumentation