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Implementation of a phase array diffuse optical tomographic imager
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10.1063/1.2963042
/content/aip/journal/rsi/79/8/10.1063/1.2963042
http://aip.metastore.ingenta.com/content/aip/journal/rsi/79/8/10.1063/1.2963042
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Dual-source out-of-phase illumination of the tissue with two sources and and 13 detectors (equiangularly separated) located diametrically opposite to the source. The source-detector combination is rotated together in steps of 30° and 12 sets of 13 detector measurements are made.

Image of FIG. 2.
FIG. 2.

Amplitude and phase responses for homogeneous object with a dual-source illumination (simulation results): (a) phase and (b) amplitude responses.

Image of FIG. 3.
FIG. 3.

Amplitude and phase responses of an object with an embedded inhomogeneity using a dual-source illumination (experimental measurements).

Image of FIG. 4.
FIG. 4.

The flow chart for the linear MOBIIR algorithm.

Image of FIG. 5.
FIG. 5.

Experimental setup. The two sources are modulated by sinusoidal signals, which are out of phase.

Image of FIG. 6.
FIG. 6.

The output signals from the detector (black is the reference signal and blue is the measured signal) for a dual-source system.

Image of FIG. 7.
FIG. 7.

Amplitude and phase for a homogeneous object (a) intensity and (b) phase plotted against detector position.

Image of FIG. 8.
FIG. 8.

The reconstructed image of a homogeneous circular object with absorption coefficient of and an embedded absorption coefficient inhomogeneity of with size of using a single-source system.

Image of FIG. 9.
FIG. 9.

The reconstructed image of a homogeneous circular object with an absorption coefficient of and an embedded absorption coefficient inhomogeneity of with size of based on a dual-source system.

Image of FIG. 10.
FIG. 10.

The reconstructed image of a homogeneous circular object with an absorption coefficient of and an embedded absorption coefficient inhomogeneity of with size of .

Image of FIG. 11.
FIG. 11.

The reconstructed image of a homogeneous circular object with an absorption coefficient of and two embedded absorption coefficient inhomogeneities of with size of each using a dual-source system. The reconstruction shows both inhomogeneities, but there is a localization error of .

Image of FIG. 12.
FIG. 12.

The reconstructed image of a homogeneous circular object with an absorption coefficient of and two embedded absorption coefficient inhomogeneities of with size of each using a single source-system.

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/content/aip/journal/rsi/79/8/10.1063/1.2963042
2008-08-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Implementation of a phase array diffuse optical tomographic imager
http://aip.metastore.ingenta.com/content/aip/journal/rsi/79/8/10.1063/1.2963042
10.1063/1.2963042
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