Application of focusing arrays to the problems of acoustic brightness thermometry

Theoretical and experimental studies on the localization of heated objects by the methods of acoustic brightness thermometry are carried out. It is demonstrated that, in the case of using a single focusing array, the spatial localization of heated objects depends on the size of the source. One-and two-dimensional tomography of a real heated source is performed by an acoustic thermal tomograph with a focusing array. The results agree well with the data calculated according to the suggested model. The applicability of correlation focusing acoustic brightness thermometry to the localization of a heated source is investigated both theoretically and experimentally. It is demonstrated that a considerable increase in the spatial resolution of the method leads to a significant loss in sensitivity.