Overview of Normal Thoracic Imaging Anatomy

Abstract

Overview of normal thoracic imaging anatomy provides a review of the normal anatomic markings of the thorax with emphasis on radiographic and CT anatomy. Chest radiography allows visualization and evaluation of various anatomic structures in the thorax including the lungs, airways, hila, thoracic vessels (including pulmonary and systemic), mediastinum, pleura and chest wall (including soft tissues and skeletal structures). The various mediastinal interfaces are also discussed including the anterior and posterior junction lines, the right paratracheal stripe, the azygoesophageal recess and the paravertebral stripes. The anatomy of the hila on lateral chest radiography is also presented. These anatomic landmarks are illustrated using a series of normal radiographic and computed tomographic (CT) images. Knowledge of normal imaging anatomy allows identification of anatomic alterations as manifestations of thoracic disease.