Radiology• Updated 21 October 2026
HRCT Chest
A high-resolution CT scan that gives very detailed images of the lungs.
Results: 1–2 days
Quick Summary
Primary Purpose
To investigate lung fibrosis, bronchiectasis and some infections.
What It Measures
Detailed lung tissue.
Preparation
Usually no preparation.
Overview
HRCT became widely known in India during COVID-19.
It uses more radiation than a chest X-ray, so it's used when needed.
What It Measures
Lung tissue
Scarring, airway widening.
How It's Performed
- 01
Position
Lie on the scanner table.
- 02
Scan
Hold your breath briefly.
- 03
Afterwards
Go home.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- CT Scans(opens in a new tab) · MedlinePlus, US National Library of Medicine
- CT scan(opens in a new tab) · NHS