Exact frequency-domain reconstruction for thermoacoustic tomography. II. Cylindrical geometry

For pt. I see ibid., vol. 21, no. 7, p. 823-8 (2002). Microwave-induced thermoacoustic tomography (TAT) in a cylindrical configuration is developed to image biological tissue. Thermoacoustic signals are acquired by scanning a flat ultrasonic transducer. Using a new expansion of a spherical wave in c...

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Bibliographic Details
Published in:IEEE transactions on medical imaging 2002-07, Vol.21 (7), p.829-833
Main Authors: Yuan Xu, Minghua Xu, Wang, L.V.
Format: Article
Language:English
Subjects:
Adipose Tissue - anatomy & histology
Algorithms
Animals
Biological and medical sciences
Biological tissues
Computer Simulation
Discrete Fourier transforms
Fourier Analysis
Fourier transforms
Frequency domain analysis
Geometry
Image Enhancement - methods
Image reconstruction
Image sampling
Mathematical models
Medical sciences
Microwaves
Muscle, Skeletal - anatomy & histology
Phantoms, Imaging
Reconstruction
Reconstruction algorithms
Reproducibility of Results
Sampling
Scattering, Radiation
Sensitivity and Specificity
Signal Processing, Computer-Assisted
Swine
Temperature
Thermoacoustics
Tomography
Tomography - instrumentation
Tomography - methods
Transducers
Ultrasonic transducers
Ultrasonography - instrumentation
Ultrasonography - methods
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Summary:For pt. I see ibid., vol. 21, no. 7, p. 823-8 (2002). Microwave-induced thermoacoustic tomography (TAT) in a cylindrical configuration is developed to image biological tissue. Thermoacoustic signals are acquired by scanning a flat ultrasonic transducer. Using a new expansion of a spherical wave in cylindrical coordinates, we apply the Fourier and Hankel transforms to TAT and obtain an exact frequency-domain reconstruction method. The effect of discrete spatial sampling on image quality is analyzed. An aliasing-proof reconstruction method is proposed. Numerical and experimental results are included.
ISSN:0278-0062
1558-254X
DOI:10.1109/TMI.2002.801171