1 research outputs found
The influence of a six degrees of freedom couch and an individual head support in patient positioning in radiotherapy of head and neck cancer
Reproducible patient positioning is important in radiotherapy (RT) of head-and-neck cancer. We therefore
compared set-up errors in head-and-neck RT resulting from three different patient positioning systems. Patients
were either treated with a standard head support (SHS) and conventional treatment couch (SHS-3, n = 10), a
SHS and rotational couch (SHS-6, n = 10), or an individual head support (IHS) and rotational couch (IHS-6,
n = 10). Interfraction mean translation vector lenghts were significantly lower for IHS-6 compared to SHS-3
(0.8 ± 0.3 mm vs. 1.4 ± 0.7 mm, P = 0.001). Intrafraction displacement was comparable among cohorts. This
study showed that the use of a six degrees of freedom couch combined with an IHS in head-and-neck RT resulted
in better interfraction reproducibilit