Transcranial Thermoacoustic Tomography: A Comparison of Two Imaging Algorithms

Author

Zijian Liu ; Lanbo Liu ; Yuan Xu ; Wang, L.V.

Author_Institution

Biomed. Eng. Program, Univ. of Connecticut, Storrs, CT, USA

Volume

32

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

289

Lastpage

294

Abstract

Thermoacoustic tomography (TAT) is a novel, non-invasive medical imaging technique but has encountered obstacles in imaging through the cranium. In this paper we present two methods for transcranial TAT: Kirchhoff migration (KM) and reverse-time migration (RTM). The two methods´ imaging qualities are verified and compared based on both synthetic and experimental data. RTM proves to have better velocity variance and imaging quality, and little noise with spatial aliasing. RTM is a promising approach for achieving transcranial TAT in further studies.

Keywords

acoustic tomography; biological organs; biomedical imaging; thermoacoustics; Kirchhoff migration method; cranium; imaging algorithms; imaging quality; noise; non-invasive medical imaging technique; reverse-time migration method; spatial aliasing; thermoacoustic tomography; transcranial TAT; velocity variance; Acoustic waves; Brain modeling; Finite difference methods; Imaging; Needles; Time domain analysis; Kirchhoff migration; reverse-time migration; thermoacoustic tomography; Algorithms; Brain; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Microwaves; Photoacoustic Techniques; Reproducibility of Results; Sensitivity and Specificity; Thermography; Tomography;

fLanguage

English

Journal_Title

Medical Imaging, IEEE Transactions on

Publisher

ieee

ISSN

0278-0062

Type

jour

DOI

10.1109/TMI.2012.2224667

Filename

6329968