Spectral pulmonary embolism
Aquilion ONE / PRISM Edition
This patient presented with shortness of breath. A spectral pulmonary CTA was performed and iodine maps generated.
A pulmonary embolus is depicted in the 70 keV image (arrow). In the iodine map, a textbook wedge-shaped area of hypoperfusion is depicted in the corresponding lung region.
| Scan Mode | Spectral Helical |
| Collimation | 0.5 mm x 80 |
| kVp | 80/135 |
| mAs | SUREExposure |
| Rotation Time | 0.5 s |
| Scan Range | 400 |
| CTDIvol | 8.9 mGy |
| DLP | 692.1 mGy-cm |
| Effective Dose | 4 mSv |
| k-factor | 0.015 (AAPM Report 96) |
Congenital absence of right pulmonary artery
Aquilion ONE / PRISM Edition
This patient presented with difficulty breathing after undergoing implantation for a cardiac pacemaker. A Spectral CTPA exam was performed to rule out pulmonary disease.
The Spectral iodine and effective Z maps show 90% reduced perfusion in the right lung due to a congenital absence of the right pulmonary artery.
Lung Nodule — Iodine Map Analysis
Aquilion ONE / PRISM Edition
Deep Learning Spectral CT delivers excellent energy separation and low-noise properties. Spectral DLR provides quantitative assessment of iodine uptake in lung nodules, which may allow for the differentiation between benign and malignant lesions.
View Scan Parameters| Scan Mode | Spectral Helical |
| Collimation | 0.5 mm x 80 |
| kVp | 80/135 |
| mAs | SUREExposure |
| Rotation Time | 0.5 s |
| Scan Range | 675.0 mm |
| CTDIvol | 7.4 mGy |
| DLP | 528.8 mGy·cm |
| Effective Dose | 7.6 mSv |
| k-factor | 0.0145 (AAPM Report 96) |
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