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Which diagnostic test should you choose? A comprehensive, doctor-reviewed comparison.
HRCT (High-Resolution Computed Tomography) is a specialized form of CT scanning optimized for lung imaging. While a standard CT scan uses thicker slices (5–10mm) for general body imaging, HRCT uses ultra-thin slices (1–2mm) with special reconstruction algorithms to provide extraordinarily detailed images of lung tissue, airways, and interstitial spaces. It is the gold standard for diagnosing interstitial lung diseases, COVID-19 lung involvement, and pulmonary fibrosis.
Technology
HRCT Scan
Ultra-thin 1–2mm slices with bone algorithm
CT Scan
Standard 5–10mm slices, general reconstruction
Radiation Exposure
HRCT Scan
Similar to standard CT (optimized protocols)
CT Scan
Low-to-moderate ionizing radiation
Scan Duration
HRCT Scan
5–10 minutes
CT Scan
5–15 minutes
Cost Range
HRCT Scan
₹2,500 – ₹5,000
CT Scan
₹2,000 – ₹8,000
Best For
HRCT Scan
Lung parenchyma, ILD, fibrosis, COVID assessment
CT Scan
General body imaging — abdomen, brain, bones
Resolution
HRCT Scan
Ultra-high resolution for lung detail
CT Scan
Standard resolution for general anatomy
Pain Level
HRCT Scan
Painless
CT Scan
Painless
Contrast Use
HRCT Scan
Usually without contrast
CT Scan
With or without contrast
HRCT is the specialized lung scan — choose it for interstitial lung disease, post-COVID assessment, and any condition requiring detailed lung parenchyma evaluation. Standard CT is better for general body imaging, abdomen, brain, and emergency use.
HRCT is a specialized type of CT scan optimized specifically for lung imaging. It uses thinner slices (1–2mm vs 5–10mm) and special algorithms to provide much finer detail of lung tissue than a standard CT scan.
HRCT is needed when an X-ray shows suspicious findings, when clinical symptoms suggest lung disease but X-ray is normal, or for specific conditions like ILD, pulmonary fibrosis, and post-COVID lung assessment.
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Our experienced radiologists and doctors can recommend the right diagnostic test based on your symptoms and clinical history.
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