Table 1.

PB and IB energy bins for the HA signal using 50–80 kVp.

	Projection-based weighting			Image-based weighting
Energy (kVp)	Bin 1 (keV)	Bin 2 (keV)	Bin 3 (keV)	Bin 1 (keV)	Bin 2 (keV)	Bin 3 (keV)
50	20–33	34–38	39–50	20–30	31–36	37–50
60	20–33	34–45	46–60	20–34	35–42	43–60
70	20–37	38–56	57–70	20–33	34–45	46–70
80	20–37	38–62	63–80	20–35	36–63	64–80