Publications by authors named "Motonori Kitaoka"
Article Synopsis
- Dynamic conformal arc therapy (DCAT) and volumetric modulated arc therapy (VMAT) both provide similar quality for treating brain metastases, but this study focused on how MLC errors during treatment affect dose distribution.
- Researchers created reference plans and simulated MLC errors using a head phantom, analyzing how these errors influenced dose delivery to the targets and surrounding brain tissue.
- The findings revealed that while MLC errors affected both techniques' dose distribution similarly, the DCAT technique showed greater resilience, with less variation in target doses compared to VMAT.
The high-density measurement (HDm) mode of the ArcCHECK device can achieve a twofold resolution enhancement compared to the standard measurement (Sm) mode. The aim of this study was to evaluate the effect of HDm on the gamma passing rate (GPR) for the patient-specific quality assurance (PSQA) in head and neck cancer. We retrospectively evaluated 30 patients who underwent volumetric modulated arc therapy (VMAT) for head and neck cancer.
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- * Findings indicated that the width of MLC leaves didn’t significantly impact the planning target volumes (PTVs), but impacted the dose to organs at risk (OARs) more due to dose transmission differences.
- * Both test and clinical case studies revealed that while MLC type had no effect on PTVs, high-definition MLC plans provided equal or greater dose reductions to OARs compared to traditional MLCs.