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. 2021 Feb 19;41(2):509–523. doi: 10.1148/rg.2021200049

Figure 8b.

Temporal misregistration on images obtained with dual-source DECT. (a) Axial pulmonary CT angiogram from the 150-kVp Sn projection shows a subtle filling defect (arrowhead) in the right ventricle (arrow). (b) Axial single-energy–equivalent pulmonary CT angiogram, which contains projections from both voltages, shows no filling defect in the right ventricle (arrow). (c) Axial single-energy (120-kVp) abdominal CT image obtained on the same day clearly shows a filling defect (arrowhead) in the right ventricle (arrow). (d) Echocardiogram shows a thrombus (arrowhead) in the right ventricle (arrow). Nonvisualization of the thrombus at DECT was due to temporal offset between the two x-ray tubes.

Temporal misregistration on images obtained with dual-source DECT. (a) Axial pulmonary CT angiogram from the 150-kVp Sn projection shows a subtle filling defect (arrowhead) in the right ventricle (arrow). (b) Axial single-energy–equivalent pulmonary CT angiogram, which contains projections from both voltages, shows no filling defect in the right ventricle (arrow). (c) Axial single-energy (120-kVp) abdominal CT image obtained on the same day clearly shows a filling defect (arrowhead) in the right ventricle (arrow). (d) Echocardiogram shows a thrombus (arrowhead) in the right ventricle (arrow). Nonvisualization of the thrombus at DECT was due to temporal offset between the two x-ray tubes.