A Microwave Imaging Method Based on Improved Contrast Source Inversion for Brain Stroke Detection

This paper presents a method for rapid microwave imaging to detect brain stroke. Based on contrast source inversion (CSI) method, the algorithm uses fast conjugate gradient (FCG) method to replace the Polak- Ribiere (PR) conjugate gradient method to optimize the objective function, which further improve the speed and accuracy of brain imaging. Simulations and experiments show that this imaging algorithm can effectively locate blood clots in human brain with high localization accuracy.