In this paper the focus is on breast cancer detection and imaging methods and we want to present a method that has low photon energy radiations. In addition, the results present the high accuracy of this method in comparison with other methods. In this way, THz imaging plays an important role on giving detailed outputs very fast with low risk for patient. Also we do not need to stain the specimen for example in IHC or H & E methods. In this paper it is proved that with no damage and burn in T-ray imaging due to low temperature gain in breast tissue, by using the tissue absorption coefficients, various areas of adipose, fiber and tumor is distinguished in breast specimen. Then normal and cancerous borders in tissue will be recognized because normal tissue contains high amount of adipose and fiber. In addition, by using image processing methods the type of tissues are determined and the mean percentage of them are calculated.