What size sections should HRCT acquisitions of the chest be done with?

High-Resolution Computed Tomography (HRCT) of the chest is specifically designed for detailed imaging of the lung parenchyma and is often used to evaluate interstitial lung diseases and other pulmonary conditions. The optimal section thickness for HRCT acquisitions is 1-2 mm. This thin slice thickness allows for enhanced resolution and detail, which is crucial for detecting subtle abnormalities in lung tissue.

Using such a small section size ensures that small nodules, ground-glass opacities, and fine reticular patterns in the lung can be adequately visualized. It enhances the ability to assess the distribution and morphology of lung diseases, which is essential for accurate diagnosis and management.

Thicker sections, as indicated in the other choices, may result in insufficient detail and could obscure important pathological findings, making them less suitable for the high-resolution demands of this imaging technique.