Dual Source CT Lung Perfused Blood Volume Imaging With Dual Energy
SOMATOM Definition Dual Energy scanning
20 years old female patient after closure of open foramen ovale with Amplatz´s occludor suffered for two days by chest pain was referred to chest CT-angiography. A scan of the thorax was performed on the SOMATOM Definition using spiral Dual-Energy data acquisition.
Pulmonary embolism affecting single segment – lateral segment of the right lower lobe – was found with corresponding deficit of perfusion on the pulmonary blood-volume (PBV) map.
Pulmonary blood-volume maps created during dual-energy data evaluation showed perfusion deficit within affected segment according to the sub-total occlusion of the segmental pulmonary artery by the embolus.
|Scan area ||Thorax |
|Scan length ||275 mm |
|Scan time ||10s |
|Scan direction ||Cranio-Caudal |
|kV ||140 / 80 kV |
|Effective mAS ||20 / 150 eff mAS |
|Rotation time ||0.5s |
|Slice collimation ||0,6mm |
Reconstructed slice thickness
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