High-resolution computed tomography ( HRCT ) is a method of examination which is more precise than chest 2-rat in the diagnosis and monitoring of diseases of the lung tissue and the airways. Modern CT equipment enables a volume HRCT scan covering the whole lung tissue. HRCT slices can also be construc … HRCT chest also known as High-resolution computed tomography of chest or HRCT lungs or HRCT thorax is a modified version of CT scan in which very thin slices of cross-sectional images of chest/lungs are obtained. HRCT (High-Resolution Computed Tomography) An HRCT (high-resolution computed tomography) scan is a type of CT scan healthcare providers use to get detailed images of your lungs. Providers most commonly use it to diagnose and monitor interstitial lung diseases and conditions that affect your small airways and alveoli (air sacs). HRCT chest is a non-invasive diagnostic tool for the detection of abnormalities in the chest or lungs. What is the full form of HRCT ? The full form of HRCT is high-resolution computed tomography. Is CT and CAT the same? CT means computed tomography and CAT means computed axial tomography and both are the same. When to go for HRCT chest?