Publications by authors named "Shuka Nishina"
Article Synopsis
- - The study analyzed 10 years of treatment planning error data collected by medical physicists, focusing on high-risk errors, the impact of treatment volume on error rates, and the effectiveness of an Automated Plan Checking System (APCS).
- - Findings indicated that using APCS reduced error rates by around 1% for high-risk errors and 3% for low-risk errors, and there was an inverse relationship between the number of treatments and error rates.
- - The research also revealed that high workloads among medical physicists and a higher number of less experienced physicians were linked to increased error occurrences, emphasizing the need for adequate training and additional plan checkers to mitigate these errors.
Article Synopsis
- - This study investigates how the movement of the liver during breathing affects the accuracy of stereotactic body radiation therapy (SBRT) for patients with spine metastasis, particularly looking at treatment plans for patients with liver lesions.
- - Researchers analyzed treatment plans for 15 patients using CT scans taken during both inhalation and exhalation to assess how liver motion impacted radiation dosage delivered to the spine and surrounding tissues.
- - Their findings suggest that without incorporating strategies like beam avoidance, the liver's movement can result in significant radiation dose discrepancies, especially affecting the spinal cord, highlighting the need for careful evaluation of respiratory management during treatment.
Article Synopsis
- * A study evaluated a new method for visualizing 3D dose distributions using panoramic reconstruction computed tomography images in four head and neck cancer patients, achieving a high correlation in dose metrics.
- * The method aids dentists by providing clear visualizations of radiation doses that can lead to complications, improving the management of dental care for these patients.
Accelerator-based boron neutron capture therapy (BNCT) systems employing a solid-state lithium target indicated the reduction of neutron flux over the lifetime of a target, and its reduction could represent the neutron flux model. This study proposes a novel compensatory approach for delivering the required neutron fluence and validates its clinical applicability. The proposed approach relies on the neutron flux model and the cumulative sum of real-time measurements of proton charges.
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