Department of Radiation Oncology (MAASTRO), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre, The Netherlands.
Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität München, Garching b. München, Germany.
Radiother Oncol. 2016 Apr;119(1):137-44. doi: 10.1016/j.radonc.2016.02.026. Epub 2016 Mar 11.
Dual energy CT (DECT) scanners are nowadays available in many radiology departments. For radiotherapy purposes, new strategies using DECT imaging are investigated to optimize radiation treatment for multiple steps in the radiotherapy chain. This review describes how DECT based methods can be used for electron density estimation, effective atomic number decomposition and contrast material quantification. Clinical radiotherapy related applications for improved dose calculation accuracy of brachytherapy and proton therapy, metal artifact reduction techniques and normal tissue characterization are also summarized together with future perspectives on the use of DECT for radiotherapy purposes.
如今，许多放射科都配备了双能 CT（DECT）扫描仪。为了放射治疗的目的，正在研究使用 DECT 成像的新策略，以优化放射治疗链中的多个步骤的放射治疗。本文综述了如何使用基于 DECT 的方法进行电子密度估计、有效原子数分解和对比剂定量。还总结了 DECT 在改善近距离治疗和质子治疗的剂量计算准确性、减少金属伪影技术和正常组织特征方面的临床放射治疗相关应用，以及 DECT 在放射治疗中的未来应用前景。
