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Insights into Imaging
Fig. 4 | Insights into Imaging

Fig. 4

From: Performance of dual-layer spectrum CT virtual monoenergetic images to assess early rectal adenocarcinoma T-stage: comparison with MR

Fig. 4

Contrast-enhanced axial venous phase in the same patient in Fig. 3. VMI 40–60 keV outperformed PEI in objective analysis and subjective scores. The highest SNR, CNR, and tumor contrast were obtained on the VMI 40 keV, which were significantly higher than other energy levels and PEI (all p < 0.05). VMI 40 keV in the venous phase yielded the highest overall image quality, tumor visibility, and tumor margin delineation scores

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