Thoracic Key

 % per year. In this chapter we give discuss the history and growth of 4D CT, describe the variability in respiratory motion, and state both the applications and limitations of…

Fig. 12.1 Illustration of the effect of system latency on the target localization accuracy (from Sharp et al. [13]) Fig. 12.2 Necessity for predicting respiratory motion, illustrated in the framework…

Tumor or organ Motion and comments Reference Lung tumor 4D CT studies show that the majority of lung tumors move less than 1 cm in the cranio-caudal direction [71] Mediastinal lymph…

of projections are required. This speed reduces breathing motion artifacts that occur when scanner rotation periods are more than 1 s. There are two basic modes of CT scanning. By far,…