Joachimowicz N, Mallorqui J J, Bolomey J C, Broquetas A
Université Paris VII, Laboratoire des Signaux et Systémes/Electromagnetics Department, Supélec, Gif-sur-Yvette, France.
IEEE Trans Med Imaging. 1998 Aug;17(4):562-70. doi: 10.1109/42.730401.
For newly developed iterative Newton-Kantorovitch reconstruction techniques, the quality of the final image depends on both experimental and model noise. Experimental noise is inherent to any experimental acquisition scheme, while model noise refers to the accuracy of the numerical model, used in the reconstruction process, to reproduce the experimental setup. This paper provides a systematic assessment of the major sources of experimental and model noise on the quality of the final image. This assessment is conducted from experimental data obtained with a microwave circular scanner operating at 2.33 GHz. Targets to be imaged include realistic biological structures, such as a human forearm, as well as calibrated samples for the sake of accuracy evaluation. The results provide a quantitative estimation of the effect of experimental factors, such as temperature of the immersion medium, frequency, signal-to-noise ratio, and various numerical parameters.
对于新开发的迭代牛顿-康托罗维奇重建技术，最终图像的质量取决于实验噪声和模型噪声。实验噪声是任何实验采集方案所固有的，而模型噪声是指在重建过程中用于再现实验设置的数值模型的准确性。本文对影响最终图像质量的实验噪声和模型噪声的主要来源进行了系统评估。该评估是根据使用工作在2.33 GHz的微波圆形扫描仪获得的实验数据进行的。待成像目标包括真实的生物结构，如人体前臂，以及用于准确性评估的校准样本。结果提供了对实验因素（如浸没介质温度、频率、信噪比）以及各种数值参数影响的定量估计。
