[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 20, Issue 1 (1-2022) ::
Int J Radiat Res 2022, 20(1): 241-244 Back to browse issues page
Target dose accuracy of single-isocenter stereotactic body radiation therapy for multiple lung lesions
Y. Shao, H. Chen, H. Wang, Y. Cheng, Z. Zhu, W. Zhuo, Q. Kong, Z. Xu
Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 20030, China , xzyong12vip@sina.com
Abstract:   (631 Views)
Background: To investigate the maximum distance from lesions to the single-isocenter that can ensure the accuracy of dose delivery for single-isocenter/two-lesions intensity modulated radiotherapy (IMRT) lung stereotactic body radiation therapy (SBRT). Materials and Methods: We employed a lung phantom made of acrylic material. Sixteen gross tumor volumes (GTVs) of the same shape and size were delineated on the CT images. The single-isocenter was placed on the center of the first GTV (GTV1). Six GTV centers were located at left and were 2-7 cm away from the single-isocenter. Nine GTV centers were in the 45° direction and were 2-10 cm away from the single-isocenter. Plans were created for the first planning target volume (PTV1) and other fifteen PTVs separately with the same isocenter. Compass was used to verify the treatment plans. γ analysis was carried out with criteria of 2% / 2 mm. The passing rate shall over than 90%. If the passing rate of γ analysis was lower than 90%, two-isocenter plan was created and carried out γ analysis as well. Results: According to the γ analysis, when the distance from lesions to the single-isocenter was more than 6cm, both in the horizontal or 45° direction, the passing rate was lower than 90%. Based on γ analysis, two-isocenter plans were created. After verification, the passing rate was higher than 90%. Conclusions: The maximum distance of using single-isocenter to treat multiple lung lesions is 5 cm. The result provides a reference for our center and other centers when using this technique to treat multiple lung lesions.
Keywords: Multiple lung lesions, single-isocenter, SBRT, dose accuracy.
Full-Text [PDF 1801 kb]   (459 Downloads)    
Type of Study: Technical Note | Subject: Radiobiology
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA



XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Shao Y, Chen H, Wang H, Cheng Y, Zhu Z, Zhuo W, et al . Target dose accuracy of single-isocenter stereotactic body radiation therapy for multiple lung lesions. Int J Radiat Res. 2022; 20 (1) :241-244
URL: http://ijrr.com/article-1-4106-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 20, Issue 1 (1-2022) Back to browse issues page
International Journal of Radiation Research
Persian site map - English site map - Created in 0.04 seconds with 32 queries by YEKTAWEB 4410