MRI-guided treatment in the breast

Area of Science:

• Medical Imaging and Interventional Radiology
• Oncology
• Minimally Invasive Therapies

Background:

• Increasing interest in non-invasive breast lesion treatments due to advantages over surgery, including fewer complications and better cosmetic outcomes.
• Non-surgical ablation is a viable option for patients unsuitable for surgery.
• Magnetic resonance (MR) and ultrasound (US) guidance offer different benefits for ablation procedures.

Purpose of the Study:

• To review the efficacy and outcomes of various non-invasive, image-guided ablation techniques for breast lesions.
• To compare the effectiveness of MR-guided versus US-guided ablation methods.
• To highlight the potential of these minimally invasive approaches in breast cancer management.

Main Methods:

• Review of studies on MR-guided and US-guided ablation techniques including High-Intensity Focused Ultrasound (HIFU/FUS), Radiofrequency Ablation (RFA), Laser Interstitial Thermal Therapy (LITT), and Cryoablation.
• Analysis of reported complete tumor ablation rates and complication profiles for each technique.
• Comparison of techniques based on guidance modality (MR vs. US) and device type (high-field vs. open MR).

Main Results:

• MR-guided tumor ablation studies report complete ablation rates from 20% to 100%.
• MR-guided High-Intensity Focused Ultrasound (HIFU/FUS) shows complete tumor ablation in 17-90% of cases.
• Other techniques like RFA (30-96%), LITT (10-71%), and Cryoablation (18-52%) also demonstrate varying efficacy with MR guidance, generally with no serious complications.

Conclusions:

• Non-invasive ablation techniques, particularly MR-guided FUS, are effective alternatives to surgery for breast lesions.
• These methods offer good safety profiles and cosmetic results, supporting a shift towards less invasive breast cancer treatments.
• Further research into these minimally invasive approaches is warranted to optimize breast neoplasm management.