Respiratory management techniques for image guided radiotherapy should be considered if 

The main objective of real-time tumor tracking is to 

Name the flat, thin structure at the arrow.   

Name the flat, thin structure at the arrow.   

Name this deep indentation (at the arrow).

Name the smooth, approximately cylindrical structure that is circled in yellow.

Name the hollow tunnel indicated by the arrow.   

Name this deep indentation (at the arrow).

Name the large protruding structure of the ulna that is circled in green.   

Name the bone at the arrow. (Palm view)