Scanner User Manual

Vascular
173
Hints
• CARE Bolus may be used to optimize the bolus tim-
ing.
• Set the ROI for monitoring scan in the abdominal
aorta with triggering threshold of 120 HU, or use
manual triggering.
• Do not administer oral contrast medium, as this
impairs the editing of MIP/SSD/VRT images.
• Use water as oral contrast.
• The length of the CM spiral in the topogram (via the
table position) can be planned exactly by means of
pre-contrast images.
• Pre-contrast images are used to visualize calcifica-
tion.
• Excellent post-processed images can be created
using a thin slice thickness and overlapping images,
i.e. the increment should be smaller than the slice
thickness.
Contrast medium IV injection
Start delay 20 – 25 sec.
Flow rate 3.0 – 3.5 ml/sec.
Total amount 100 – 120 ml
C2-025.630.01.01.02_APPLICATIONGUIDE_SPIRIT.book Page 173 Friday, April 8, 2005 9:55 AM