Dual-energy CT for electron density measurements using clinical x-ray source

使用临床 X 射线源进行电子密度测量的双能 CT

• 批准号: 22611007
• 负责人: SAITO Masatoshi
• 金额: $ 1.25万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22611007/
• 关键词: electron density; dual-energy CT

Dual-energy computed tomography (DECT) has the potential for measuring electron density distribution in a human body to predict the range of particle beams for treatment planning in proton or heavy-ion radiotherapy. However, thus far, a practical dual-energy method that can be used to precisely determine electron density for treatment planning in particle radiotherapy has not been developed. In this study, another DECT technique involving a balanced filter method using a conventional x-ray tube has been proposed. From the viewpoint of beam hardening and the tube-loading efficiency, the DECT using balanced filters would be significantly more effective in measuring the electron density than the conventional DECT.

双能计算机断层扫描 (DECT) 具有测量人体电子密度分布的潜力，可以预测质子或重离子放射治疗中治疗计划的粒子束范围。然而，迄今为止，尚未开发出一种实用的双能方法，可用于精确确定粒子放射治疗中治疗计划的电子密度。在这项研究中，提出了另一种 DECT 技术，涉及使用传统 X 射线管的平衡滤波器方法。从束硬化和管加载效率的角度来看，使用平衡滤波器的 DECT 在测量电子密度方面比传统的 DECT 显着更有效。

项目成果

バランスドフィルタ法を組み合わせた2色X線CTの検討

双色X线CT结合平衡滤波法的研究

• 发表时间: 2010
• 作者: Oike T;Ogiwara H;Torikai K;Nakano T;Yokota J;Kohno T.Garcinol;齋藤正敏
• 通讯作者: 齋藤正敏

Technical note: Optimization for improved tube- loading efficiency in the dual-energy computed tomography coupled with balanced filter method Med

技术说明：优化双能计算机断层扫描中提高管加载效率与平衡滤波器方法 Med

• DOI: 10.1118/1.3467754
• 发表时间: 2010
• 期刊: Phys
• 作者: Y.Hara;Y.Takada;他6名;松嵜洋子・石沢順子・佐々木玲子;Masatoshi Saito
• 通讯作者: Masatoshi Saito

Study of conversion of energy subtracted CT number to electron density using dual energy CT

双能CT能量减CT数换算为电子密度的研究

• 发表时间: 2013
• 作者: Masayoshi Tsukihara1;Yoshiyuki Noto;Takahide Hayakawa;Masatoshi Saito
• 通讯作者: Masatoshi Saito

Optimized low-kV spectrum of dual-energy CT equipped with high-kV tin filtration for electron density measurements Med

配备高 kV 锡过滤的双能 CT 的优化低 kV 谱，用于电子密度测量 Med

• DOI: 10.1118/1.3584200
• 发表时间: 2011
• 期刊: Phys
• 作者: Y.Takada;T.Nihei;他3名;無藤隆;Masatoshi Saito
• 通讯作者: Masatoshi Saito

Technical note : Optimization for improved tube-loading efficiency in thedual-energy computed tomography coupled with balanced filter method

技术说明：优化双能计算机断层扫描中提高管装载效率与平衡滤波器方法相结合

• 发表时间: 2010
• 期刊: Medical Physics
• 影响因子: 3.8
• 作者: R.Tansho;R.Kohno;Y.Takada;他5名;無藤隆(監修・指導);鳥飼幸太;Masatoshi Saito
• 通讯作者: Masatoshi Saito