The use of echospectral methods of tissue evaluation for follow-up of brachytherapy treatment

Abstract

Development of techniques for evaluation of the tissues structure is one of the main tasks in medical diagnostics. At present time the ultrasound imaging technique is widely used for qualitative evaluation of tissue structure. Tissue evaluation methods are using A, B, M scans of tissues. Significant part of valuable information is lost by using common diagnostic methods. New technique for tumours tissue structure evaluation using ultrasound radiofrequency signals (RF) is presented in this paper. Echospectral methods allow get additional information about tissue structure, gives more information about treatment process. The mean spectral frequency, the width of power spectrum and effective value of correlation function are used for tumours tissue characterization during brachytherapy treatment.