Author: Aqil Jauhar
Protocol Structure
Embolism TestBolus
- Topogram
- Control Scan
- Contrast
- Test Bolus
- Embolism
Topogram
Include upper thorax until middle of liver
Control Scan
Put the line at lower of carina(to make a letter ‘A’)
Ensure cross-sectional of right pulmonary artery appear.
Contrast
Non- Ionic Iodinated Contrast Media 300 mg I/ml Solution for injection/infusion
Injector Setting
Test Bolus
Contrast
Flow rate: 5.0 ml/s
Volume: 15 ml
Normal saline
Flow rate: 5.0 ml/s
Volume: 10 ml
Pulmonary Arteries
Contrast
Flow rate: 4.5/5.0 ml/sec
Volume: 70 ml
(30 ml of contrast + 40 ml of contrast mix with normal saline)
Normal salineFlow rate: 4.5 ml/sec
Volume: 50m ml
Test Bolus
Put the line at lower of carina(to make a letter ‘A’)
(Put the line same with control scan).
Set the injector for test bolus. When ready, start scan.
Stop scan when the contrast already enhance and flush out from the pulmonary trunk.
DynaEva
Open DynaEva use test bolus image.
Delay from start of injection = 2.0s (take no. of delay at test bolus)
Using Elliptical ROI, make circle at the pulmonary trunk.
Take value of ‘time to peak’ and put at delay embolism. (Normally good peak time 6s to 10 s)
Embolism
Routine section
Delay = take value ‘time to peak’ at dynaEva
Scan from upper thorax until middle of liver.
Reconstruction Post Contrast
[table id=11 /]
Multi Planar Reconstruction (MPR)
Parallel Ranges:
- Image thickness : 3.0mm
- Number of images : 9
IV Mediastinum
- Coronal thorax
- Coronal right oblique of pulmonary trunk
- Coronal left oblique of pulmonary trunk
Siemens SyngoVia 3D Render
Open with ‘CT Vascular’
PunchÂ
Series of Images Send to PACS
- Topogram 0.6 T20f
- Mediastinum 3.0 B30f
- Lung 3.0 B70f
- Embolism 1.0 B30f
- Mediastinal 1.0 B30f
- Lung 1.0 B70f
- Patient protocol
- COR THOR
- RT COR OBL
- LT CORONAL OBL
- VRT CTPA
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