Daily breathing inconsistency in pancreas SBRT: a 4DCT study.

ABSTRACT:

Background

Stereotactic body radiation therapy (SBRT) treatments of pancreatic cancer typically employ relatively small margins. This study characterizes the motion of high visibility structures in close proximity to the pancreas to determine how much the motion envelope of such a structure changes due to respiratory variation between fractions.

Methods

Fanbeam, four-dimensional computed tomography (4DCT) studies acquired initially for planning and again prior to each treatment for 6 patients were used to fully characterize the change in motion of high-contrast structures in close proximity to the pancreas.

Results

Three of the six patients investigated had structures that showed a change in motion over the course of treatment that would not have been covered when usi

SUBMITTER: Sarkar V 

PROVIDER: S-EPMC6286933 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature