Non-Volumetric HRCT 1 Phase Prone

Last Updated: 2026-01-01 Author:

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• 1. Clinical Summary

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  Acquisition SummaryClinical Indications

  Series	Phase	Coverage
  HRCT Prone	Contrast (Full inspiration delay)	Lung apices to Costophrenic angles

  • Dependent atelectasis vs fibrosis
  • Posterior lung assessment
  • ILD with gravity-dependent changes

• 2. Patient Prep

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  • Position: Prone with arms extended forward
  • NPO Status: N/A

• 3. IV Contrast & Injection

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  No Intravenous Contrast

  This protocol does not require IV contrast administration.

• 4. Special Notes

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  Technologist NotesNursing NotesRadiologist NotesTips & Tricks

  • Single INSPIRATION. PRONE position. Non-volumetric (1-2cm intervals). Distinguish atelectasis from fibrosis
  • Additional Recons: Compare prone to supine to differentiate atelectasis from fibrosis

  • Position patient prone safely. Cushion support. Breath hold coaching

  Safety First

  • Renal Function: N/A
  • Allergy: N/A

  • Differentiate dependent atelectasis from true fibrosis. Posterior lung better aerated prone

  • Safe prone positioning. Compare to supine if available

Series AcquisitionPost-Processing

Series Name	Start Location	End Location	Delay	Slice Thickness	Notes
Scout Prone	Lung apices	Costophrenic angles	N/A	N/A	Lateral
HRCT Prone	Lung apices	Costophrenic angles	Full inspiration	1 mm at 1-2cm intervals	Sequential prone

Plane	Acquisition	FOV	Thickness/Increment	Kernel	IR Strength	Notes
Axial	HRCT prone	Chest	1 mm display	Lung	3	Prone images
Coronal	HRCT prone	Chest	2 mm	Lung	3	Coronal prone
Compare	Supine vs prone	Posterior lungs	1 mm	Lung	3	Dependent changes