These protocols are based on a 128 slice dual source Siemens CT. Some factors may need to be adjusted for a different CT.
CT - Thorax Seq HRCT
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Children under 5 years of age are often unable to hold
their breath long enough to complete an HRCT.
Before an HRCT, practise with the patient their breath holding abilities, make a game of it. Expiration is a hard concept for small children to grasp so use examples that they can understand such as blowing out candles on a cake. Practise this with the child prior to doing the Expiration phase. For children less than 5 years of age a General Anaesthetic will be required.
- interstitial lung disease
- cystic fibrosis
- infection in immunocompromised patients
- right middle lobe syndrome
- questionable lung disease
|Patient Preparation||Nil by mouth for 4 hrs if GA req'd|
|Patient Position||- feet first
- arms raised above head
|Scan Area||Inspiration - Apices to base of lungs
Expiration - Above Carina to top of diaphragm
|kV/Quality ref mAs/
Care Dose 4D on
Care kV semi
<2yrs 5mm feed
>2yrs 10mm feed
<2yrs 10mm feed
>2yrs 25mm feed
|Reconstructions||1mm B70s Baby Lung (Insp and Exp)
2mm B31s Mediastinum (Insp)
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- Date last published: 30 December 2017
- Document type: Imaging Protocol
- Services responsible: Paediatric Radiology
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