Breast PET/MRI Hybrid Imaging and Targeted Tracers

Area of Science:

• Oncology
• Medical Imaging
• Radiochemistry

Background:

• Hybrid positron emission tomography/magnetic resonance imaging (PET/MRI) is a rapidly advancing modality for breast cancer assessment.
• Its clinical utility is expanding due to technological innovations in scanners, PET tracers, and artificial intelligence (AI).

Purpose of the Study:

• To provide a state-of-the-art review of hybrid breast PET/MRI applications.
• To discuss advanced MRI techniques, current and experimental PET tracers, and emerging AI and radiomics approaches.

Main Methods:

• Review of advanced MRI techniques including diffusion-weighted imaging, dynamic contrast-enhanced MRI, magnetic resonance spectroscopy, and chemical exchange saturation transfer.
• Description of PET tracers (e.g., 18F-FDG, 89Zr-trastuzumab, 68Ga-FAPI-46) detailing their mechanisms and clinical uses.
• Exploration of radiomics and AI in hybrid PET/MRI.

Main Results:

• Hybrid PET/MRI integrates multiple advanced imaging techniques for comprehensive breast cancer evaluation.
• A wide array of PET tracers show promise for molecular imaging in breast cancer.
• AI and radiomics present new avenues for enhancing diagnostic accuracy and personalized treatment.

Conclusions:

• Hybrid PET/MRI is a powerful tool with evolving clinical applications in breast cancer.
• Continued research into novel tracers and AI integration will further optimize its diagnostic and therapeutic potential.
• Understanding the strengths and limitations of hybrid PET/MRI is crucial for real-world implementation.