Dynamic 4DCT DSA was performed post cerebral bypass surgery. 3D Volume Rendered, dynamic volume and subtracted angiographic images demonstrate an Extracranial to Intracranial (EC-IC) Bypass.
View Scan ParametersScan Mode | Dynamic Volume |
Collimation | 0.5 mm x 320 |
kVp | 80 |
mAs | 70 |
Rotation Time | 1.0 s |
Scan Range | 160.0 mm |
Dose Reduction | AIDR 3D |
CTDIvol | 225.6 mGy |
DLP | 3702.4 mGy•cm |
Effective Dose | 7.78 mSv |
k-factor | 0.0021 (AAPM Report 96) |
80-year-old female, Brain CT without iodinated contrast was performed with AIDR 3D Enhanced, Adaptive Iterative Dose Reduction. PURE ViSION Optics allows new levels of image detail and contrast resolution that demonstrates excellent gray-white matter differentiation. Multiplanar Reconstruction (MPR) shows senile cortical atrophy.
View Scan ParametersScan Mode | Helical |
Collimation | 0.5 mm x 40 |
kVp | 120 |
mAs | 240 |
Rotation Time | 0.75 s |
Scan Range | 126 mm |
Dose Reduction | AIDR 3D Enhanced |
CTDIvol | 59.1 mGy |
DLP | 948.5 mGy•cm |
Effective Dose | 1.99 mSv |
k-factor | 0.0021 (AAPM Report 96) |
© CANON MEDICAL SYSTEMS EUROPE B.V.
© CANON MEDICAL SYSTEMS EUROPE B.V.