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. 2020 Sep 11;4:57. doi: 10.1186/s41747-020-00184-z

Fig. 2.

Fig. 2

Measured contrast enhancement (CE) values as a result of employed specific HU values between 0 and 600 HU at 70–140 kVp when using dose modulation (a, b and c) and constant volume computed tomography dose index (CTDIvol) (d, e and f) for the three different phantom sizes. The horizontal line displays the reference diagnostic enhancement level of ≥ 200 HU