Prediction of Volumetric Data Errors in Patients Treated with Gamma Knife Radiosurgery

Abstract

The different methods of measurement of tumor volume (>0.5 cm(3)) demonstrated strong linear correlation. In tumors with volume less than 0.5 cm(3), the most reliable method was the geometric method. When using the PACS system in the evaluation of tumor response, a data error as high as 21% should be considered.