Reconstruction of tissue dynamics in the compressed breast using multiplexed measurements and temporal basis functions

Gregory Boverman; Eric L. Miller; Dana H. Brooks; Qianqian Fang; S. A. Carp; J. J. Selb; David A. Boas

doi:10.1117/12.708306

1 March 2007 Reconstruction of tissue dynamics in the compressed breast using multiplexed measurements and temporal basis functions

Gregory Boverman, Eric L. Miller, Dana H. Brooks, Qianqian Fang, S. A. Carp, J. J. Selb, David A. Boas

Author Affiliations +

Proceedings Volume 6434, Optical Tomography and Spectroscopy of Tissue VII; 643413 (2007) https://doi.org/10.1117/12.708306
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

In the course of our experiments imaging the compressed breast in conjunction with digital tomosynthesis, we have noted that significant changes in tissue optical properties, on the order of 5%, occur during our imaging protocol. These changes seem to consistent with changes both in total Hemoglobin concentration as well as in oxygen saturation, as was the case for our standalone breast compression study, which made use of reflectance measurements. Simulation experiments show the importance of taking into account the temporal dynamics in the image reconstruction, and demonstrate the possibility of imaging the spatio-temporal dynamics of oxygen saturation and total Hemoglobin in the breast. In the image reconstruction, we make use of spatio-temporal basis functions, specifically a voxel basis for spatial imaging, and a cubic spline basis in time, and we reconstruct the spatio-temporal images using the entire data set simultaneously, making use of both absolute and relative measurements in the cost function. We have modified the sequence of sources used in our imaging acquisition protocol to improve our temporal resolution, and preliminary results are shown for normal subjects.

Citation Download Citation

Gregory Boverman, Eric L. Miller, Dana H. Brooks, Qianqian Fang, S. A. Carp, J. J. Selb, and David A. Boas "Reconstruction of tissue dynamics in the compressed breast using multiplexed measurements and temporal basis functions", Proc. SPIE 6434, Optical Tomography and Spectroscopy of Tissue VII, 643413 (1 March 2007); https://doi.org/10.1117/12.708306

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KEYWORDS

Breast

Absorption

Tissues

Oxygen

Tissue optics

Hemodynamics

Image restoration

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