Significances of Collimator Angle Rotation and Different Angle Combinations in Volumetric-Modulated Arc-Based Stereotactic Radiosurgery With 5-mm Leaf-Width Multileaf Collimator for Single Brain Metastases

• Published in: Curēus (Palo Alto, CA) Vol. 17; no. 1; p. e77946
• Main Authors: Ohtakara, Kazuhiro, Suzuki, Kojiro
• Format: Journal Article
• Language: English
• Published: United States Springer Nature B.V 01.01.2025; Cureus
• Subjects: Conformity; Medical Physics; Metastasis; Neurosurgery; Planning; Radiation Oncology; Radiosurgery; dose conformity; dose gradient; non-coplanar arc; brain metastases; volumetric-modulated arc therapy; collimator angle; single brain metastasis; dose inhomogeneity; multileaf collimator; stereotactic radiosurgery

Purpose In linac-based stereotactic radiosurgery (SRS) using a multileaf collimator (MLC) for multiple brain metastases (BMs), the appropriate MLC angle rotation is useful to minimize the intervening brain dose by avoiding island blocking between the lesions localized along the direction of leaf mov...