Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Illustration of respiratory motion perturbation (diamonds) and 5-dimensional (triangles) predictions from the initial motion (dot line) in 1 4-dimensional computed tomography (4DCT) scan to the actual motion (solid line) in another 4DCT scan in 4 patients (A-D).
