Publications by authors named "Keita Kaga"
Article Synopsis
- - The study focuses on enhancing quality control for online magnetic resonance-guided adaptive radiotherapy (MRgART) by identifying risks through a detailed failure mode and effect analysis (FMEA).
- - A multidisciplinary team identified 153 failure modes and categorized them into MRgRT, online ART, and conventional RT, highlighting high-risk areas related to structure segmentation, treatment planning, and beam delivery.
- - The findings from the FMEA provide insights into risk characteristics, aiming to improve quality assurance programs specifically for online MRgART technologies.
Background: The 106-Ruthenium contact plaque applicator is utilized for the treatment of intraocular tumor within a thickness of less than 6 mm. If anything obstructs the placement of the plaque applicator, the treatment is generally difficult because the applicator has to be temporarily located just on the opposite side of the retinal tumor. Furthermore, the plaque applicator edge of approximately 1 mm does not contain Ru, estimating the delivered radiation dose for eccentric tumor is challenging because the lateral dose profile is inadequately provided by the manufacture's certification.
View Article and Find Full Text PDFPurpose: In this study, we report on our proposed phantom based on the new end-to-end (E2E) methodology and its results. In addition, we verify whether the proposed phantom can replace conventional phantoms.
Methods: The hexagonal-shaped newly designed phantom has pockets on each side for a film dosimeter of size 80 × 90 mm , which is easily removable, considering the Co penumbra.
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.