面罩及乳腺托架固定下乳腺癌保乳术后放疗锁骨上下区摆
位误差分析
马茗微;刘欣;李晔雄;王淑莲;覃仕瑞;李明辉;张江鹄;唐玉;亓姝楠;陈偲晔;马玉超
【期刊名称】《中华放射肿瘤学杂志》 【年(卷),期】2019(028)003
【摘要】Objective To quantify the setup errors measured with kV cone-beam CT (CBCT) using breast board with or without a thermoplastic head mask in breast cancer patients who received whole breast and supraclavicular nodal region irradiation.Clinical target volume (CTV) to planning
target
volume
(PTV)
in
3
directions
were
also
calculated.Methods The study included thirty patient receiving both whole breast and supraclavicular nodal region irradiation on Elekta Versa HD linear accelerators (Elekta Oncology Systems,Crawley,UK) between June 2016 and January 2018.The setup error data were retrospectively analyzed.All the patients were immobilized in the supine position
on
a
breast
board
system
(Carbon
fibre
breast
board,Civco,Iowa,USA) with both arms raised.Twenty of the patients added an extra thermoplastic head mask to immobilize the neck.A CBCT scan was taken before treatment at the first 3 to 5 fractions and then once every week.Registration with the planning CT was performed and adjusted to match the target volume of the supraclavicular nodal region and the cervical vertebra by experienced medical staff,the position of
面罩及乳腺托架固定下乳腺癌保乳术后放疗锁骨上下区摆位误差分析
