Noncontact diffuse correlation tomography of human breast tumor

Area of Science:

• Biomedical optics
• Medical imaging
• Hemodynamics

Background:

• Accurate assessment of blood flow distribution is crucial for diagnosing and monitoring breast tumors.
• Existing methods for measuring tissue hemodynamics can be invasive or lack 3-D resolution.

Purpose of the Study:

• To adapt a noncontact diffuse correlation tomography (ncDCT) system for 3-D imaging of blood flow in human breast tumors.
• To evaluate the system's accuracy and effectiveness in simulations and in vivo studies.

Main Methods:

• A 3-D camera captured breast surface geometry, creating a 3-D mesh.
• An ncDCT probe scanned the surface, collecting boundary data.
• A finite element framework was used for 3-D image reconstruction of blood flow distribution.

Main Results:

• Computer simulations indicated high accuracy when tumors were within the system's sensitive region.
• Incorporating prior tumor location data improved blood flow contrast recovery.
• In vivo imaging of two breast carcinomas revealed 5.9- and 10.9-fold higher blood flow contrasts in tumors versus surrounding tissues.

Conclusions:

• The ncDCT system successfully performed 3-D imaging of blood flow in human breast tumors.
• Results demonstrate the system's potential for non-invasive hemodynamic imaging in soft tissues.
• This technology offers a promising approach for breast cancer diagnosis and management.