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Three-Dimensional Intrafractional Motion of Breast During Tangential Breast Irradiation Monitored With High-Sampling Frequency Using a Real-Time Tumor-Tracking Radiotherapy System by Rumiko Kinoshita; Shinichi Shimizu; Hiroshi Taguchi; Norio Katoh; Masaharu Fujino; Rikiya Onimaru; Hidefumi Aoyama; Fumi Katoh; Tokuhiko Omatsu; Masayori Ishikawa; Hiroki Shirato is a Medicine article available to read on EtoBox.

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## Purpose: To evaluate the three-dimensional intrafraction motion of the breast during tangential breast irradiation using a real-time tracking radiotherapy (rt) system with a high-sampling frequency. ## Methods and materials: A total of 17 patients with breast cancer who had received breast conservation rt were included in this study. a 2.0-mm gold marker was placed on the skin near the nipple of the breast for rt. a fluoroscopic real-time tumor-tracking rt system was used to monitor the marker. the range of motion of each patient was calculated in three directions. ## Results: The mean +/- standard deviation of the range of respiratory motion was 1.0 +/- 0.6 mm (median, 0.9; 95% confidence interval [ci] of the marker position, 0.4-2.6), 1.3 +/- 0.5 mm (median, 1.1; 95% ci, 0.5-2.5), and 2.6 +/- 1.4 (median, 2.3; 95% ci, 1.0-6.9) for the right-left, craniocaudal, and anteroposterior direction, respectively. no correlation was found between the range of motion and the body mass index or respiratory function. the mean +/- standard deviation of the absolute value of the baseline shift in the right-left, craniocaudal, and anteroposterior direction was 0.2 +/- 0.2 mm (range, 0.0-0.8 m

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Author

Rumiko Kinoshita; Shinichi Shimizu; Hiroshi Taguchi; Norio Katoh; Masaharu Fujino; Rikiya Onimaru; Hidefumi Aoyama; Fumi Katoh; Tokuhiko Omatsu; Masayori Ishikawa; Hiroki Shirato

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0360-3016)

Published

2008

Language

EN

Field

Medicine (Health Sciences)