[Development and usefulness of dynamic respiratory scanning by fast CT]

Dynamic Respiratory Scanning (DRS) was developed in order to get a series of respiring chest image during the period from maximum inspiration to maximum expiration by using fast CT. The image of different respiratory phase was selected and displayed successively under the control of a track ball. We could recognize the relation of the visceral and parietal pleura as the relative position of the ribs and peripheral pulmonary vessels. The DRS was useful for the diagnosis of pleural adhesion.