Clinical Implementation of a Virtual-Micro MLC for Smoothing MLC Field Edge = 다엽콜리메이터에 의한 조사경계면에서의 요동현상을 완화시켜주는 가상미세다엽콜리메이터의 임상 적용

다국어 초록 (Multilingual Abstract)

A Siemens HD-270 MLC$^{TM}$, a virtual-micro MLC, allows to the application of a smooth field edge method due to the finite leaf-width of MLC. This technique was implemented into a Pinnacle planning system in order to evaluate the dose distributions during the planning stage. The necessary dosimetric aspects, such as undulation and effective penumbra, were investigated with variations in the resolutions of a virtual-micro MLC and field edge angle. The positional accuracy of the couch movement was also assessed for clinical implementation. The overhead time for planning and treatment was confirmed as negligible.e.

참고문헌 (Reference)

1 "quality assurance and clinical application of a virtual micro MLC technique" 30 : 138-143, 2003

2 "Siemens HD-270 MLC users manual" 2000

3 "Implementation of the isocenter-shift technique for smoothing MLC field edge on a 3D treatment planning system" 29 : 1413-1420, 2002

4 "Field edge smoothing for multileaf collimators" 35 : 89-94, 1996

5 "Clinical dosimetry for implementation of a multileaf collimator" 1255-1261, 1992