ecrin-mdr-crcClinical2016Liver cell carcinomaSecondary malignant neoplasm of large intestine and rectumIntrahepatic bile duct carcinomaSecondary Malignant Neoplasm Of Large Intestine And RectumIntrahepatic Bile Duct CarcinomaLiver Cell CarcinomaObservationalhttps://newmdr.ecrin.org/Study/2432498Germany11ECRIN MDRCompletedfalseEnlargement of the distance between tumor and adjacent normal tissue/organs (Organs at risk=OAR) by interventional insertion of balloon catheters RAD317Interventions: Group 1: The aim of radiation therapy is to treat the tumor effectively, while at the same time optimally protecting the surrounding healthy organs (OAR). A retrospective dosimetric data analysis of realized brachytherapies will show whether the use of a balloon catheter during Irradiation can lead to a reduced dosage exposition regarding OAR. Primary outcome(s): Determination of the dosimetric effect of distancing subcapsular liver tumors from adjacent normal tissue/organs (organs at risk = OAR) by inserting interventional balloon catheters. Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: basic science2016-11-152432498DRKS00011126