Article

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

Department of Physics, KTH, SE-100 44 Stockholm, Sweden.
European Journal of Radiology (impact factor: 2.61). 12/2006; 60(2):275-8. DOI:10.1016/j.ejrad.2006.08.004 pp.275-8
Source: PubMed

ABSTRACT 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.

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Keywords

anatomical clutter
 
breast tumors
 
dual-energy contrast-enhanced imaging
 
electronic threshold
 
energy sensitive photon
 
high-
 
k-edge
 
low-energy images
 
low-energy photons
 
simultaneous acquisition
 
single-shot dual-energy subtraction mammography technique
 
X-ray spectrum discriminates