Evaluation of interbreath-hold lung tumor position reproducibility with vector volume histogram using the breath-hold technique

Tumor geometric reproducibility for lung stereotactic body radiotherapy (SBRT) is an important issue in the breath-hold (BH) technique. We investigated the inter-BH reproducibility of the tumor position in expiratory BH using our proposed vector volume histogram (VVH) method. Subjects comprising 14 patients with lung cancer who were treated with lung SBRT under expiratory BH conditions were monitored by the Abches system. Multiple computed tomography (CT) scans were performed to evaluate the inter-BH reproducibility of the tumor position at the expiratory BH in the simulation session.

Source: Medical Dosimetry - February 12, 2020 Category: Radiology Authors: Hideharu Miura, Shuichi Ozawa, Minoru Nakao, Yoshiko Doi, Katsumaro Kubo, Masahiko Kenjo, Yasushi Nagata Source Type: research