TY - GEN
T1 - Improved model on minimizing static intensity modulation delivery time
AU - Jing, Jia
AU - Cao, Ruifen
AU - Wu, Yican
AU - Li, Guoli
AU - Lin, Hui
AU - Cheng, Mengyun
AU - Pei, Xi
AU - Kong, Weihua
AU - Li, Gui
PY - 2009
Y1 - 2009
N2 - In Intensity Modulated Radiation Therapy static intensity modulation delivery, leaf sequencing is basically a process where the intensity map is broken down into subfields or segments that can be implemented by multileaf collimators. The purpose of this study was to investigate a new method to improve the Langer's integer programming model. The method is to choose the horizontal or orthogonal leaf direction of intensity map according with Xia and Verhy's alogrithm and invoke a new constraint to optimize multileaf collimator leaf travel distances. A comparative study of three different leaf sequencing methods, Xia and Verhey, Langer et al., and our improved model is presented. The numerical outputs reveal that model modifications can yield better results according with the three criteria: total number of monitor unit, number of segment and leaf travel distances.
AB - In Intensity Modulated Radiation Therapy static intensity modulation delivery, leaf sequencing is basically a process where the intensity map is broken down into subfields or segments that can be implemented by multileaf collimators. The purpose of this study was to investigate a new method to improve the Langer's integer programming model. The method is to choose the horizontal or orthogonal leaf direction of intensity map according with Xia and Verhy's alogrithm and invoke a new constraint to optimize multileaf collimator leaf travel distances. A comparative study of three different leaf sequencing methods, Xia and Verhey, Langer et al., and our improved model is presented. The numerical outputs reveal that model modifications can yield better results according with the three criteria: total number of monitor unit, number of segment and leaf travel distances.
KW - Leaf sequencing
KW - Leaf travel distances
KW - Multileaf collimator
UR - https://www.scopus.com/pages/publications/74049131723
U2 - 10.1109/BMEI.2009.5305406
DO - 10.1109/BMEI.2009.5305406
M3 - 会议稿件
AN - SCOPUS:74049131723
SN - 9781424441341
T3 - Proceedings of the 2009 2nd International Conference on Biomedical Engineering and Informatics, BMEI 2009
BT - Proceedings of the 2009 2nd International Conference on Biomedical Engineering and Informatics, BMEI 2009
T2 - 2009 2nd International Conference on Biomedical Engineering and Informatics, BMEI 2009
Y2 - 17 October 2009 through 19 October 2009
ER -