Author: Nabilah Nawi
Protocol Structure
00_ThoraxRoutine (Adult)
- Topogram
- Thorax NC
- PreMonitoring
- Contrast
- Monitoring
- BodyAngio
Topogram
Include upper thorax until iliac crest
Non Contrast
Vertically: from upper thorax until iliac crest
Horizontal: include bilateral breast and soft tissue
Reconstruction Non Contrast
[table id=35 /]
Pre-Monitoring
Put the line at aorta arch
Contrast
Contrast: Omnipaque 300 mg I/ml Solution for injection/infusion IOHEXOL
Injector Setting
NP Test
Flow rate: 5.0 ml/s
Volume: 15 ml
CTA
ContrastFlow rate: 5.0 ml/s
Volume: 70 ml
Normal SalineFlow rate: 5.0 ml/sec
Volume: 50 ml
Normal Saline:
Flow rate: 5.0ml/sec
Volume: 50ml
Moniroting
Draw the ROI at the arch of aorta (use pre-monitoring image)
Set the trigger at 100HU
*If there is calcification present within the aorta, you can switch off the auto trigger function at ‘Contrast’ tab. Press tthe start button to start the monitoring scanning; and when aorta is fully enhance with contrast (HU 100+), press the ‘Start’ again. Body Angio will start scanning *
Body Angio
Include upper thorax until end of kidney
Automatic start scan when trigger 100HU
Reconstruction Post Contrast
[table id=36 /]
Multi Planar Reconstruction (MPR)
Parallel Ranges:
Image thickness : 3.0mm
Number of images : 9
Body Angio 0.75:
Coronal thorax
Siemens SyngoVia 3D Render
Open with CT Vascular
Punch the unnecessary image
Open ‘Range Tools’ choose ‘Radial Range’
Radial Range
Number of images = 19 (lock)
Angle between images= 19
Orientation start from AP view. Then click ‘Start’
Save as VRT Range CTA Thorax
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