Thoracic Aorta – vHP
vHP provides a gated scan of the heart and non gated scan of the upper abdomen in a single contrast injection and one breath hold in this patient with suspected enlarged ascending aorta seen on ultrasound and BMI 25.2 and heart rate 72bpm.
Courtesy South Coast Radiology Qld, Australia
View Scan Parameters| Scan Mode | Ultra Helical |
| Collimation | 0.5 mm × 80 |
| kVp | 120 |
| mAs | SUREExposure |
| Rotation Time | 0.35 s |
| Scan Range | 308 mm |
| Dose Reduction | AiCE |
| CTDIvol | 23.8 mGy |
| DLP | 836.8 mGy·cm |
| Effective Dose | 11.7 mSv |
| k-factor | 0.014 (AAPM Report 96) |
Cardiac
Prospective ECG gated cardiac CTA in this 90kg patient with a heart rate of 68bpm.
Courtesy Izumo Citizens Hospital, Japan
View Scan Parameters| Scan Mode | Ultra Helical |
| Collimation | 0.5 mm × 80 |
| kVp | 120 |
| mAs | SUREExposure |
| Rotation Time | 0.375 s |
| Scan Range | 140 mm |
| Dose Reduction | AiCE |
| CTDIvol | 49.9 mGy (AAPM Report 96) |
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