title: Multiple-transducer scheme for scanning tomographic acoustic microscopy using transverse waves.
abstract: We propose a new type of multiple-transducer scheme with functions of multiple-angle and multiple-frequency tomography for scanning tomographic acoustic microscopy (STAM) using transverse waves. We review the data acquisition system and mode conversion of the acoustic waves for STAM and the multiple-angle and multiple-frequency tomography. Our multiple-transducer scheme has three insonification angles and three resonance frequencies in order to operate, in the transverse wave mode, multiple-angle and multiple frequency tomography for STAM. In order to evaluate the performance of our transducer scheme, we have simulated tomographic reconstruction with a back-and-forth propagation algorithm. Simulation results show that our multiple-transducer scheme is capable of obtaining good resolution with transverse wave mode and multiple-frequency tomography. We also show that our multiple-transducer scheme is an efficient rotation tool for a number of projections.
authors.affiliation: Department of Electronic Engineering, Mokwon University, Taejon, Korea.
authors.forename: D S
authors.initials: DS
authors.lastname: Ko
mesh_terms: D008853:Microscopy / Q000295:instrumentation / Q000379:methods*; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*