The non-Gaussian nature of prostate motion based on real-time intrafraction tracking.

ABSTRACT:

Purpose

The objective of this work is to test the validity of the Gaussian approximation for prostate motion through characterization of its spatial distribution.

Methods and materials

Real-time intrafraction prostate motion was observed using Calypso 4-dimensional (4D) nonradioactive electromagnetic tracking system. We report the results from a total of 1024 fractions from 31 prostate cancer patients. First, the correlation of prostate motion in right/left (RL), anteroposterior (AP), and superoinferior (SI) direction were determined using Pearson's correlation of coefficient. Then the spatial distribution of prostate motion was analyzed for individual fraction, individual patient including all fractions, and all patients including all fractions. The displacement in RL, AP,

SUBMITTER: Lin Y 

PROVIDER: S-EPMC4764058 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature