Influence of patient's physiologic factors and immobilization choice with stereotactic body radiotherapy for upper lung tumors.

ABSTRACT: The purpose of the present study was to compare the impact of pulmonary function, body habitus, and stereotactic body radiation therapy (SBRT) immobilization on setup and reproducibility for upper lung tumor. From 2008 through 2011, our institution's prospective SBRT database was searched for patients with upper lung tumors. Two SBRT immobilization strategies were used: full-length BodyFIX and thermoplastic S-frame. At simulation, free-breathing, four-dimensional computed tomography was performed. For each treatment, patients were set up to isocenter with in-room lasers and skin tattoos. Shifts from initial and subsequent couch positions with cone-beam computed tomography (CBCT) were analyzed. Accounting for setup uncertainties, institutional tolerance of CBCT-based shifts for treatment wa

SUBMITTER: Sio TT 

PROVIDER: S-EPMC5711083 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature