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Fig. 3 | Insights into Imaging

Fig. 3

From: Dual-energy CT for the detection of skull base invasion in nasopharyngeal carcinoma: comparison of simulated single-energy CT and MRI

Fig. 3

Suspicious false-negative finding for skull base invasions by SECT images in a 54-year-old man with NPC. A The axial SECT images (bone window) show suspicious sclerosis at the left sphenoid body (red arrow). The DECT images (B, IO image; C, Zeff image) directly show marked skull base invasions with higher iodine concentrations than right sphenoid body (green arrow). D The MRI images (fat-suppressed T1-weighted image after gadolinium administration) confirm the same extent of bone invasions as the DECT images with contrast enhancement

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