Cyber-knife jako nowe narzędzie w radioterapii raka stercza

Abstract

Several studies now indicate that dose escalation can increase the chances of freedom from biochemical recurrence for early stage prostate cancer treated with primary radiation. These data, and evidence suggesting a low a/b ratio for prostate cancer, have prompted some to use hypofractionated delivery (i.e., small number of high dose fractions) to treat localized prostate cancer. Stereotactic body radiation therapy (SBRT) delivers fewer high-dose fractions of radiation which could be more radiobiologically favorable than conventional radiotherapy doses. Early experiences using CK for localized low-risk and intermediate-risk prostate cancer showed that such treatment resulted in very high oncological efficacy with minimal toxicity risk.