The objective of the project is to develop a phase sensitive tomosynthesis technique to facilitate breast cancer detection. The digital breast tomosynthesis, which is currently investigated by many research groups, relies on the small difference in x-ray attenuation between breast tissue and lesions, hence it will be limited in its sensitivity and specificity of breast cancer detection. As x-ray wave pass through breast, x-ray undergoes phase- shifts as well. X-ray phase-shift differences between tissue and lesions are several hundreds to one thousand times larger than their attenuation differences. The proposed prototype system switches the breast tomosynthesis from the attenuation-based imaging with low energy x-rays to the phase sensitive imaging with high energy x-rays. Employing a micro-focus x-ray tube operating at high tube-voltages and innovative phase retrieval and 3D image reconstruction methods, the proposed tomosynthesis technique reconstructs the quantitative slice images of breast electron densities. With this technique the radiation dose to breast is reduced many-fold as compared to current digital breast tomosynthesis. The proposed technique has great potential for enhancing the sensitivity and specificity of breast cancer detection.

Public Health Relevance

In this proposal we propose a drastic paradigm change of x-ray breast tomosynthesis. The project seeks to develop a prototype of the phase sensitive breast tomosynthesis for greatly enhancing the sensitivity and specificity of breast cancer detection and achieving many-fold reduction of radiation doses to breast.

National Institute of Health (NIH)
National Cancer Institute (NCI)
Research Project (R01)
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Special Emphasis Panel (ZRG1-SBIB-P (04))
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Baker, Houston
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University of Alabama Birmingham
Schools of Medicine
United States
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Liu, Huiqiang; Wu, Xizeng; Xiao, Tiqiao (2015) Optimization of reconstructed quality of hard x-ray phase microtomography. Appl Opt 54:5610-8
Liu, Huiqiang; Wu, Xizeng; Xiao, Tiqiao (2015) Technical Note: Synchrotron-based high-energy x-ray phase sensitive microtomography for biomedical research. Med Phys 42:5595-603
Yan, Aimin; Wu, Xizeng; Liu, Hong (2015) A general theory of interference fringes in x-ray phase grating imaging. Med Phys 42:3036-47
Wu, Di; Yan, Aimin; Li, Yuhua et al. (2015) Characterization of a high-energy in-line phase contrast tomosynthesis prototype. Med Phys 42:2404-20
Wong, Molly Donovan; Wu, Xizeng; Liu, Hong (2014) Image quality and dose efficiency of high energy phase sensitive x-ray imaging: phantom studies. J Xray Sci Technol 22:321-34
Wong, Molly Donovan; Yan, Aimin; Ghani, Muhammad et al. (2014) Dose and detectability improvements with high energy phase sensitive x-ray imaging in comparison to low energy conventional imaging. Phys Med Biol 59:N37-48
Yan, A; Wu, X; Liu, H (2013) A robust general phase retrieval method for medical applications. J Instrum 8:
Miao, Hui; Wu, Xizeng; Zhao, Huijuan et al. (2012) A phantom-based calibration method for digital x-ray tomosynthesis. J Xray Sci Technol 20:17-29
Wu, Xizeng; Yan, Aimin; Liu, Hong (2012) X-ray phase-shifts-based method of volumetric breast density measurement. Med Phys 39:4239-44
Liu, Huiqiang; Ren, Yuqi; Guo, Han et al. (2012) Phase retrieval for hard X-ray computed tomography of samples with hybrid compositions. Chin Opt Lett 10:121101

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