Applications of CGO solutions to coupled-physics inverse problems

Ilker Kocyigit, Ru Yu Lai, Lingyun Qiu, Yang Yang, Ting Zhou

Research output: Contribution to journalArticle


This paper surveys inverse problems arising in several coupled-physics imaging modalities for both medical and geophysical purposes. These include Photo-acoustic Tomography (PAT), Thermo-acoustic Tomography (TAT), Electro-Seismic Conversion, Transient Elastrography (TE) and Acousto-Electric Tomography (AET). These inverse problems typically consists of multiple inverse steps, each of which corresponds to one of the wave propagations involved. The review focuses on those steps known as the inverse problems with internal data, in which the complex geometrical optics (CGO) solutions to the underlying equations turn out to be useful in showing the uniqueness and stability in determining the desired information.

Original languageEnglish (US)
Pages (from-to)277-304
Number of pages28
JournalInverse Problems and Imaging
Issue number2
StatePublished - Apr 2017



  • CGO solutions
  • Coupled-physics imaging modalities
  • Internal data
  • Stability
  • Uniqueness

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