|
Specific Anatomic Region |
Liver |
|
Application |
Suspected hepatoma (dual phase study)
|
|
Author |
Fishman EK |
|
Reference Source |
Personal Communication |
|
Scanner Used |
Siemens Plus4 Volume Zoom |
|
KV / mAs / Time per Rotation (sec) |
120 / 165 / .5 (both phases) |
|
Detector Collimation (mm) |
2.5 or 1 |
|
Slice Thickness (mm) |
3-5 or 1.25 |
|
Data Reconstruction Interval (mm) |
3-5 or 1 |
|
Table Speed (mm per rotation) / Pitch |
12.5 / 5 or 6 / 6 |
|
Oral Contrast |
750 cc of water |
|
IV Contrast Volume and Type |
120 cc of Omnipaque 350
|
|
Injection Rate |
3 cc / sec |
|
Scan Delay (sec) |
30 sec / 60 sec |
|
3D Technique Used |
Volume rendering / MIP (if needed) |
|
Comments:
- This is a dual phase study, and requires both arterial and portal
phase studies. Some will recommend a non-contrast phase as well. Also,
some will suggest that the portal/delayed phase be at 80-100 seconds.
In this protocol, 3D imaging is optional, and is usually used if a
tumor is detected and surgical planning is needed.
- When 3D imaging is requested we use 1 mm detectors with 1.25 collimation
and reconstruction at 1 mm intervals.
|
