Fig. 4
From: Efficient spectral data reduction for accurate iodine quantification in multi-energy CT
Using the 300 mm adult water length, we show the relationship comparing scheme 1 (upper row) and scheme 2 (lower row) weight values on estimated CRLB iodine noise relative to the max noise estimate in the 50/50 dataset. The yellow stars indicate the weights with the lowest iodine noise estimate. In the 10/90 and 25/75 duty cycles, scheme 2 outperformed scheme 1; however, scheme 1 had the lowest iodine noise estimate in the 50/50, 75/25, and 90/10 duty cycles. Average noise estimates increased as the duty cycle included an increased 140 kVp cycle time.
