title: Changes in chest wall thickness during four-dimensional CT in particle lung treatment planning.
abstract: Four-dimensional (4D) CT images for charged particle lung therapy were acquired using a 256 multislice CT without couch movement. The thickness of the posterior right chest wall changed with respiration with a water equivalent path length (WEL) of more than 5 mm over the mid-exhalation phase but the thickness of the left chest wall did not vary.
authors.affiliation: Research Centre for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Japan. shinshin@nirs.go.jp
authors.forename: S
authors.initials: S
authors.lastname: Mori
authors.forename: N
authors.initials: N
authors.lastname: Yamamoto
authors.forename: M
authors.initials: M
authors.lastname: Nakajima
authors.forename: M
authors.initials: M
authors.lastname: Baba
mesh_terms: D000368:Aged; D005260:Female; D056973:Four-Dimensional Computed Tomography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods; D012119:Respiration; D035441:Thoracic Wall / Q000033:anatomy & histology / Q000000981:diagnostic imaging*