Table 1.

Comparison of image- and raw data-based analysis

	Analysis of dual-energy CT
	Image-based analysis	Raw data-based analysis
Scanning	Projection-data at two energies that do not need to match	Projection-data at two energies must match
Postprocessing of dual-energy data	After reconstruction	Before reconstruction
Dual-energy CT applications	Limited applications	Wide variety of applications
Image quality	Contains various artifacts	Less affected by various artifacts