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Electron density and effective atomic number estimation in a maximum a posteriori framework for dual-energy computed tomography.
Medical Physics ( IF 3.2 ) Pub Date : 2020-06-03 , DOI: 10.1002/mp.14309
Mikaël Simard 1, 2 , Esther Bär 3 , Danis Blais 4 , Hugo Bouchard 1, 2, 4
Affiliation  

The stoichiometric calibration method for dual‐energy CT (DECT) proposed by Bourque et al. (Phys Med Biol. 59:2059; 2014), which provides estimators of the electron density and the effective atomic number, is adapted to a maximum a posteriori (MAP) framework to increase the model’s robustness to noise and biases in CT data, specifically for human tissues. Robust physical parameter estimation from noisy DECT scans is required to maximize the precision of quantities used for radiotherapy treatment planning such as the proton stopping power (SPR).

中文翻译:

电子密度和有效原子序数估计在最大后验框架下用于双能计算机断层扫描。

Bourque等人提出的双能CT(DECT)的化学计量校准方法。(物理学医学生物学59:2059; 2014),其提供的电子密度和有效原子序数的估值器,被适配到最大后验(MAP)框架来增加模型的鲁棒性在CT数据中的噪声和偏差,特别是用于人体组织。需要从嘈杂的DECT扫描中进行可靠的物理参数估算,以最大程度地提高放射治疗治疗计划中所用量的精确度,例如质子阻止能力(SPR)。
更新日期:2020-06-03
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