Spectral imaging (radiography)

For spectral imaging in astronomical spectroscopy, see Spectral imaging.

Spectral imaging is an umbrella term for energy-resolved X-ray imaging in medicine.[1] The technique makes use of the energy dependence of X-ray attenuation to either increase the contrast-to-noise ratio, or to provide quantitative image data and reduce image artefacts by so-called material decomposition. Dual-energy imaging, i.e. imaging at two energy levels, is a special case of spectral imaging and is still the most widely used terminology, but the terms "spectral imaging" and "spectral CT" have been coined to acknowledge the fact that photon-counting detectors have the potential for measurements at a larger number of energy levels.[2][3]

  1. ^ Cite error: The named reference Fredenberg2018 was invoked but never defined (see the help page).
  2. ^ Roessl, E.; Proksa, R. (2007). "K-edge imaging in X-ray computed tomography using multi-bin photon counting detectors". Phys. Med. Biol. 52 (15): 4679–4696. doi:10.1088/0031-9155/52/15/020. PMID 17634657. S2CID 5871406.
  3. ^ Fredenberg, E.; Hemmendorff, M.; Cederström, B.; Åslund, M.; Danielsson, M. (2010). "Contrast-enhanced spectral mammography with a photon-counting detector: Contrast-enhanced spectral mammography with a photon-counting detector". Medical Physics. 37 (5): 2017–2029. arXiv:2101.07787. Bibcode:2010MedPh..37.2017F. doi:10.1118/1.3371689. PMID 20527535. S2CID 31601055.