Dosimetric evaluation of the multileaf collimator for irregular shaped radiation fields

Radiochromic Film Dosimetry of Small Irregular Fields Shaped by a Micro-multileaf Collimator for Stereotactic Radiosurgery

Dosimetric characteristics of an electron multileaf collimator for modulated electron radiation therapy

Modulated electron radiation therapy (MERT) has been proven as an effective way to deliver conformal dose distributions to shallow tumors while sparing distal critical structures and surrounding normal tissues. It had been shown that a dedicated electron multileaf collimator (eMLC) is necessary to reach the full potential of MERT. In this study, a manually-driven eMLC for MERT was investigated....

Evaluation of Dosimetric Characteristics of a Double-focused Dynamic Micro-Multileaf Collimator (DMLC)

223 This work was supported by the fusion research program of Korea research council for industrial science and technology (B551179-1208-00, Development of Convergent Radio Therapy Equipment with O-arm CT) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). Received 1 December 2015, Revised 28 December 2015, Accepted 28 December 2015 Correspondence: Young-Nam Kang (ynkang33@gmail...

Evaluation of dosimetric effect of leaf position in a radiation field of an 80‐leaf multileaf collimator fitted to the LINAC head as a tertiary collimator

This study evaluates changes in the dosimetric characteristics of a Varian Millennium 80-leaf multileaf collimator (MLC) in a radiation field. In this study, dose rate, scatter factor, percentage depth dose, surface dose and dose in the buildup region, beam profile, flatness and symmetry, and penumbra width measurements were made for 6-MV and 15-MV photon beams. Analysis of widths between 50% d...

The Dosimetric Effects of Different Multileaf Collimator Widths on Physical Dose Distributions

Introduction: Geometric changes in the multileaf collimator (MLC) led to dosimetric considerations in intensity-modulated radiation therapy (IMRT) due to the number and size of the pixels in the intensity map, which are determined by the MLC leaf width. In this study, we evaluated the dosimetric effects of different MLC widths on physical dose distributions for IMRT plans. Materials and Method...