✦ LIBER ✦

Filtered backprojection for thermoacoustic computed tomography in spherical geometry

✍ Scribed by M. Haltmeier; T. Schuster; O. Scherzer

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 351 KB
Volume: 28
Category: Article
ISSN: 0170-4214
DOI: 10.1002/mma.648

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Thermoacoustic computed tomography (TCT) is a novel imaging technique for non‐destructive evaluation and medical imaging. It uses electromagnetic energy as input and the induced thermoacoustic pressure field as measurement output. The determination of the unknown energy deposition function is based on the integral geometric problem of reconstructing a function from its integrals over certain spheres. We apply the method of approximate inverse to derive filtered backprojection type reconstruction algorithms in spherical scanning geometry. Numerical results are presented and show the validity of the resulting algorithms. Copyright © 2005 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Wavelet Filtering for Filtered Backproje

Wavelet Filtering for Filtered Backprojection in Computed Tomography

✍ Shiying Zhao 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 295 KB

In this paper, we present a characterization of MRA biorthogonal wavelet filters with full frequency supports. Based on this characterization, it is established that wavelet ramp filters are biorthogonal wavelets if the original wavelets are sufficiently regular. An efficient subband coding algorith

The use of large scale computer assisted

The use of large scale computer assisted tomography for the study of hydrodynamics in trickling filters

✍ D. Toye; P. Marchot; M. Crine; G. L'Homme 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 693 KB

In this paper, a new experimental technique is proposed, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling filters. Tomography refers to the cross-sectional imaging of an object from data collected by illuminating this object from many direction