### Abstract

A truncated-Newton algorithm for three-dimensional electrical impedance tomography is presented. Explicit formation of the Hessian, normally a computational bottleneck, is avoided through use of a preconditioned conjugate gradient (PCG) solution of the Levenberg-Marquardt update. The PCG preconditioner is formed as a product of a sparse approximation of the Jacobian by its transpose.

Original language | English |
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Pages (from-to) | 2189-2191 |

Number of pages | 3 |

Journal | Electronics Letters |

Volume | 35 |

Publication status | Published - 1999 |

### Keywords

- RESISTANCE TOMOGRAPHY

## Cite this

Player, M. A., van Weereld, J., Allen, A. R., & Collie, D. A. L. (1999). Truncated-Newton algorithm for three-dimensional electrical impedance tomography.

*Electronics Letters*,*35*, 2189-2191.