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.
The risk evaluation of adverse effects (brain edema and radiation necrosis).
The V14 of 159 brain metastases plotted in relation to the marginal doses administered in three-fraction CyberKnife radiotherapy. Symptomatic brain edema developed in six patients (triangle) and radiation necrosis requiring surgical resection appeared in three patients (circle). Kjellberg's 5% necrosis risk line [10] was converted and then drawn for three-fraction radiotherapy (dotted line).
