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Stereotactic body radiotherapy for stage I lung cancer and small lung metastasis: evaluation of an immobilization system for suppression of respiratory tumor movement and preliminary results by Fumiya Baba; Yuta Shibamoto; Natsuo Tomita; Chisa Ikeya-Hashizume; Kyota Oda; Shiho Ayakawa; Hiroyuki Ogino; Chikao Sugie is a Medicine article available to read on EtoBox.

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## Background: In stereotactic body radiotherapy (sbrt) for lung tumors, reducing tumor movement is necessary. in this study, we evaluated changes in tumor movement and percutaneous oxygen saturation (spo2) levels, and preliminary clinical results of sbrt using the bodyfix immobilization system. ## Methods: Between 2004 and 2006, 53 consecutive patients were treated for 55 lesions; 42 were stage i non-small cell lung cancer (nsclc), 10 were metastatic lung cancers, and 3 were local recurrences of nsclc. tumor movement was measured with fluoroscopy under breath holding, free breathing on a couch, and free breathing in the bodyfix system. spo2 levels were measured with a finger pulseoximeter under each condition. the delivered dose was 44, 48 or 52 gy, depending on tumor diameter, in 4 fractions over 10 or 11 days. ## Results: By using the bodyfix system, respiratory tumor movements were significantly reduced compared with the free-breathing condition in both craniocaudal and lateral directions, although the amplitude of reduction in the craniocaudal direction was 3 mm or more in only 27% of the patients. the average spo2 did not decrease by using the system. at 3 years, the local co

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Author

Fumiya Baba; Yuta Shibamoto; Natsuo Tomita; Chisa Ikeya-Hashizume; Kyota Oda; Shiho Ayakawa; Hiroyuki Ogino; Chikao Sugie

Publisher

BioMed Central; Springer (Biomed Central Ltd.); [London]: BioMed Central, 2006-; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 1748-717X)

Published

2009

Language

EN

Field

Medicine (Health Sciences)