Nearest Neighbor Method to Estimate Internal Target for Real-Time Tumor Tracking.

ABSTRACT:

Purpose

This work proposed a nearest neighbor estimation method to track the respiration-induced tumor motion.

Methods

Based on the simultaneously collected motion traces of external surrogate and internal target during the modeling phase prior to treatment, we first obtain the nearest neighbors of the current surrogate in external space. Subsequently, the concurrent targets in internal space are determined and used to estimate the current target position. The method was validated on 71 cases that were from 3 open access databases. In addition, to evaluate the method's estimation and prediction accuracy, we compared the method with other works.

Results

Except for 2 cases, the nearest neighbor estimation achieved the root-mean-square error of <3 mm. The comparison indi

SUBMITTER: Zhang J 

PROVIDER: S-EPMC6081758 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature