Abstract
Spectral CT utilizes multiple spectrally distinct attenuation datasets obtained at different photon energies to distinguish tissues and materials. Acquisition of two spectrally distinct data sets, dual energy CT (DECT), can be achieved in a clinical setting using either a dual x-ray source system, or rapid tube potential switching with a single x-ray source. A recent innovation permitting DECT acquisition is development of a spectral CT detector, a unique dual-layer system that detects two energy bands of x-ray photons. This detector allows generation of spectrally distinct image sets from each individual band as well as a conventional image set from the combined signals. In this chapter, we review the technical details of dual layer CT technology and discuss its advantages, disadvantages and cardiovascular applications.
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Acknowledgements
The authors acknowledge Amar Dhanantwari of Philips Healthcare for his help in preparation of this manuscript
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Rajiah, P., Halliburton, S. (2015). Technical Aspects of DECT with Dual Layer Detectors. In: Carrascosa, P., Cury, R., GarcÃa, M., Leipsic, J. (eds) Dual-Energy CT in Cardiovascular Imaging. Springer, Cham. https://doi.org/10.1007/978-3-319-21227-2_3
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DOI: https://doi.org/10.1007/978-3-319-21227-2_3
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-21226-5
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