Individual lymph node position variation for rectal cancer patients treated with long course chemoradiotherapy.

ABSTRACT:

Background and purpose

Delivery of high precision radiotherapy lymph node boosts requires detailed information on the interfraction positional variation of individual lymph nodes. In this study we characterized interfraction positional shifts of suspected malignant lymph nodes for rectal cancer patients receiving long course radiotherapy. Furthermore, we investigated parameters which could affect the magnitude of the position variation.

Materials and methods

Fourteen patients from a prospective clinical imaging study with a total of 61 suspected malignant lymph nodes in the mesorectum, presacral, and lateral regions, were included. The primary gross tumor volume (GTV_p) and all suspected malignant lymph nodes were delineated on six magnetic resonance imaging scans

SUBMITTER: Arp DT 

PROVIDER: S-EPMC11245935 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature