The road to breast cancer screening with diffusion MRI

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Breast cancer poses a significant global health burden.
• Mammography (MMG) is the current standard but has limitations, especially in dense breasts.
• Breast MRI offers high sensitivity/specificity but is costly and uses contrast agents with potential side effects.

Purpose of the Study:

• To evaluate diffusion MRI as a contrast-agent-free screening tool for breast cancer.
• To compare diffusion MRI performance against MMG and Dynamic Contrast Enhanced (DCE) MRI.
• To explore standardization and cost-effective implementation of breast diffusion MRI.

Main Methods:

• Review of diffusion MRI principles and current clinical performance data.
• Comparison of diffusion MRI sensitivity and specificity with MMG and DCE MRI.
• Discussion of protocol standardization and development of dedicated low-field MRI systems.

Main Results:

• Diffusion MRI demonstrates higher specificity than DCE MRI and superior performance to MMG.
• It provides insights into tissue microstructure and tumor perfusion without contrast agents.
• Similar sensitivity to DCE MRI is observed, making it a strong candidate for screening.

Conclusions:

• Diffusion MRI is a promising alternative for breast cancer screening, potentially eliminating the need for contrast agents.
• Standardizing acquisition/analysis protocols and improving MRI accessibility are crucial next steps.
• Development of dedicated, low-cost MRI systems could facilitate widespread clinical adoption.