Time-resolved optical mammography and its preliminary clinical results

Area of Science:

• Biomedical Optics
• Medical Imaging
• Cancer Diagnostics

Background:

• Breast cancer screening remains a critical area in women's health.
• Conventional mammography has limitations in sensitivity and specificity.
• Novel imaging techniques are needed for improved breast cancer detection and monitoring.

Purpose of the Study:

• To develop and evaluate a multi-channel time-resolved spectroscopy system for optical mammography.
• To assess the system's capability for 3D breast imaging and cancer detection.
• To investigate the utility of optical mammography in monitoring chemotherapy effects.

Main Methods:

• Utilized time-correlated single photon counting with custom-made detector modules and signal processing.
• Employed a Ti:Sapphire laser for pulsed light irradiation and optical fibers for light collection.
• Reconstructed 3D breast images using time-resolved photon path distribution analysis.
• Validated the system with a 3D phantom model simulating breast cancer and initiated clinical studies.

Main Results:

• Successfully demonstrated human breast imaging feasibility using the optical mammography prototype.
• Breast cancers were identified as regions of significantly higher optical absorption in comparative studies.
• The system showed high signal-to-noise ratio, temperature stability, and temporal resolution.

Conclusions:

• Optical mammography using time-resolved spectroscopy is a promising tool for breast cancer screening.
• The technique can effectively detect breast cancers and may be valuable for monitoring chemotherapy response.
• Further clinical studies are warranted to establish its role in routine practice.