High-resolution CT: normal anatomy, techniques, and pitfalls.

High-resolution CT (HRCT) as a technique has shown an increasing role in the evaluation of known or suspected lung disease. To accurately interpret HRCT, an awareness of normal lung and pleural anatomy is essential. Knowledge of optimal HRCT technique is necessary to avoid misinterpretation and increase diagnostic accuracy. In addition, the potential technical and patient-related pitfalls are many. This article discusses normal lung and pleural anatomy, the technique of HRCT, and potential technical and patient-related pitfalls of HRCT.