Ovation TriVascular, Инструкция по эксплуатации

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Patient motion should be avoided during scan. If possible, avoid scanning non-
patient objects in field of view. Do not change patient position, table height, or field of
view during scan. If patient moves, repeat the study in its entirety.
Table 7.
Spiral CT requirements
Minimum Protocol High Resolution
Protocol
(Recommended)
Scan Mode Helical Helical
Scan Parameters 110-140 kVp, Auto mAs
or
170-400 mA scan time of
0.5 sec 110-140 kVp, Auto mAs
or
170-400 mA scan time of
0.5 sec
Slice Thickness 3 mm 0.625 – 2 mm
Slice Interval 3 mm 0.625 – 2 mm
Pitch
0.984:1 0.984:1
Superior Extent
AAA
2 cm above celiac artery
origin 2 cm above celiac artery
origin
Inferior Extent
AAA Pre-op: Lesser trochanter
of femurs to include
femoral bifurcations
Post-op: At least 2 cm
distal to the lowest
hypogastric artery origin Pre-op: Lesser
trochanter of femurs to
include femoral
bifurcations
Post-op: At least 2 cm
distal to the lowest
hypogastric artery origin
Contrast Standard per Radiology
Department Standard per Radiology
Department
Volume 80 ml contrast with 40 ml
saline flush or Standard
Contrast Volume with
Saline Flush per
Radiology Department 80 ml contrast with 40 ml
saline flush or Standard
Contrast Volume with
Saline Flush per
Radiology Department
Rate 4 ml/sec 4 ml/sec
Scan Delay ROI – threshold 90-100
HU in aorta ROI – threshold 90-100
HU in aorta
Field of View Large Body Large Body
Reconstruction
Algorithm Standard Standard