A phantom-based evaluation of a real-time tracking micro MLC delivery
by Yaxi Liu; Fan-Chi Su; Martin Szegedi; Lan Lin; Chengyu Shi; Niko Papanikolaou
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 8, No. 2/3, 2012

Abstract: A cutting edge real-time tracking delivery system was evaluated for respiratory-correlated radiation therapy. The performed evaluations included Multi-Leaf Collimator (MLC) leaf position accuracy, MLC motion time delay, dosimetric performance, and tracking failure. The experiment-based results indicated that the dynamic MLC was capable of achieving the position accuracy in 1~2 mm and the MLC time delay in the range of 100 μs. The dosimetric comparison evidenced the significant advantage when utilising real-time tracking. The analysis of experiments also indicated the potential fail of tracking due to the impact of patient breathing patterns and the visibility of tumour.

Online publication date: Fri, 12-Dec-2014

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