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.
Axial view for three SRS treatment plans. Left: Single fraction plans [1800 cGy to gross tumor volume (GTV), 1600 cGy to planning target volume (PTV)]. Right: Three fraction plans (2700 cGy to GTV, 2100 cGy to PTV). Top: Thoracic spine case. Middle: Cervical spine case. Bottom: Lumbar spine case. GTV as red segment. PTV as pink segment. Spinal cord, brachial plexus, and cauda equine as blue contours. Esophagus as green contour.
