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硼中子俘获疗法中超越剂量:细胞内¹⁰B俘获统计与微剂量学在效应预测中的应用

Beyond Dose in Boron Neutron Capture Therapy: Cellular $^{10}$B-Capture Statistics and Microdosimetric Context in Effect Prediction

Shuichi Furuya, Atsushi Fujimura

arXiv 2609.03130首次发表:更新:

发表机构

Particle Beam Therapy Research Institute, Inc.; Kagawa University Faculty of Medicine(粒子束治疗研究所有限公司; 香川大学医学院)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本研究提出分层框架,整合多类BNCT相关研究,以细胞¹⁰B俘获统计为桥梁,实现考虑不确定性的空间分辨BNCT效应预测,不取代现有方法。

AI 中文摘要

硼中子俘获疗法(BNCT)通过¹⁰B(n,α)⁷Li反应产生高线性能量转移、短射程粒子。传统描述符包括吸收剂量、复合生物效应(CBE)加权剂量和光子等效剂量(D_isoE),仍具临床实用性,但将细胞异质性、区室化硼定位及随机反应发生压缩为宏观总结。我们提出分层框架,将细胞相关的¹⁰B俘获反应统计置于微剂量学效应建模上游,连接临床观察与BNCT响应的细胞尺度决定因素。我们整合BNCT微剂量学、CBE与D_isoE、随机微剂量动力学建模(SMK)、基于PHITS的细胞模拟、硼成像、组织微结构及硼剂表征的已发表研究,将这些元素重组为观测、潜在细胞、反应计数和生物效应层。成像、病理、剂特异性数据及中子场信息约束潜在变量,如细胞硼负荷、区室定位与几何;这些变量决定预期反应负荷与实际反应计数分布,随后通过微剂量学模型转化为细胞存活、肿瘤控制或正常组织损伤。因此,细胞相关的反应计数统计为宏观测量与已建立的BNCT效应模型提供可解释的推断桥梁,支持空间分辨且考虑不确定性的效应预测,无需取代基于CBE、D_isoE、SMK或PHITS的现有方法。

英文摘要

Boron neutron capture therapy (BNCT) produces high-linear-energy-transfer, short-range particles through the $^{10}$B(n,$α$)$^{7}$Li reaction. Conventional descriptors, including absorbed dose, compound biological effectiveness (CBE)-weighted dose, and photon-isoeffective dose ($D_{\mathrm{isoE}}$), remain clinically useful but compress cellular heterogeneity, compartmental boron localization, and stochastic reaction occurrence into macroscopic summaries. We propose a hierarchical framework that places cell-associated $^{10}$B-capture reaction statistics upstream of microdosimetric effect modeling and links clinical observations to cellular-scale determinants of BNCT response. We synthesize published work on BNCT microdosimetry, CBE and $D_{\mathrm{isoE}}$, stochastic microdosimetric kinetic modeling, PHITS-based cellular simulations, boron imaging, tissue microstructure, and boron-agent characterization, reorganizing these elements into observational, latent-cellular, reaction-count, and biological-effect layers. Imaging, pathology, agent-specific data, and neutron-field information constrain latent variables such as cellular boron burden, compartmental localization, and geometry; these variables determine expected reaction burdens and distributions of realized reaction counts, which are then translated into cell survival, tumor control, or normal-tissue injury by microdosimetric models. Cell-associated reaction-count statistics thus provide an interpretable inferential bridge between macroscopic measurements and established BNCT effect models, supporting spatially resolved and uncertainty-aware effect prediction without replacing existing approaches based on CBE, $D_{\mathrm{isoE}}$, SMK, or PHITS.

Comments43 pages, 2 figures, 1 table, 1 box. Review article. Submitted to Physica Medica

论文原文

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