CT using two X-ray energy spectra for material-specific characterisation
Expansion
Dual-Energy CT
Purpose
Improves lesion characterisation, reduces beam hardening, enables element quantification
Clinical Context
DECT scans at two energies (e.g., 80 and 140 kVp) enabling material decomposition. Useful for gout, stroke perfusion, virtual unenhanced imaging.
Related Terms
- Standard CT
- Spectral imaging
Key Points
- DECT enables gout crystal identification (monosodium urate), virtual non-contrast imaging, and perfusion assessment