Publications by authors named "Shouichi Katsuta"
Mycosis fungoides (MF) is a common, low-grade non-Hodgkin's lymphoma of skin-homing T lymphocytes that can be treated via skin-directed radiotherapy. Our institution has implemented total skin electron therapy (TSET) with a 4.3 m source-to-surface distance (SSD) and 6 MeV electron beams with a beam spoiler.
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- Contour delineation in radiation oncology is essential but often inaccurate due to inconsistencies between different observers; the study explored automated segmentation methods using atlases and AI to enhance accuracy and efficiency for Organs at Risk in cancer patients.
- The study involved 21 prostate cancer patients and 30 head and neck cancer patients, evaluating segmentation accuracy using tools like MIM Maestro and MIM Contour ProtégéAI, measuring performance through similarity indices and visual assessments by radiation oncologists.
- Results indicated that the AI-based model outperformed atlas-based methods for prostate cancer, especially in bladder and rectum delineation; however, both models showed similar accuracy for head and neck cancers, with AI segmentation offering significant time savings
Objective: This study aimed to assess the dosimetric effect of intestinal gas of stereotactic magnetic resonance (MR)-guided adaptive radiation therapy (SMART) on target and critical organs for pancreatic cancer without online electron density correction (EDC).
Methods: Thirty pancreatic cancer patients who underwent online SMART were selected for this study. The treatment time of each stage and the total treatment time were recorded and analyzed.