Contrast-enhanced spectral mammography with a compact synchrotron source.

Area of Science:

• Medical Imaging
• Radiology
• Biomedical Engineering

Background:

• Mammography is the standard for early breast cancer detection but has limitations due to anatomical structure superposition.
• Contrast-enhanced spectral mammography (CESM) using K-edge subtraction (KES) improves detection of suspicious findings.
• There is a need for enhanced CESM techniques to improve diagnostic accuracy and reduce radiation exposure.

Purpose of the Study:

• To introduce and evaluate a novel two-material decomposition approach for CESM.
• To compare the proposed method with the standard clinical KES-based CESM.
• To assess the potential of the new method for improving image quality and quantitative outcomes in CESM.

Main Methods:

• Utilized quasi-monochromatic radiation from the Munich Compact Light Source (MuCLS).
• Employed a modified mammographic accreditation phantom for experimental validation.
• Performed standard dual-energy KES-based CESM for direct comparison.

Main Results:

• The dual-energy KES outperformed clinical CESM in contrast-to-noise ratio (CNR) and spatial resolution.
• The proposed two-material decomposition approach achieved superior CNR compared to KES.
• Experimental results demonstrated improved image quality at a lower mean glandular dose (MGD) than clinical CESM.

Conclusions:

• The novel two-material decomposition method shows significant potential for enhancing CESM.
• This technique offers improved image quality and quantitative analysis compared to KES-based CESM.
• The findings suggest a promising advancement for early breast cancer detection using improved CESM.