Breast intervention device for low-field MRI with a customized unilateral coil.

[Display omitted] • Provide a new, low-cost, and highly accurate low-field MRI-guided diagnosis and treatment scheme for breast cancer patients. • A new open device for MRI-guided breast interventional diagnosis and treatment is developed. • A unilateral coil for breast interventional therapy with good openness is customized and its overall performance is better than that of the commercial breast imaging coil. • A simple and reliable lesion localization design combined for breast intervention device is proposed. With the incidence of breast cancer rising to the top among female malignant tumors, magnetic resonance images guided breast biopsy intervention and minimally invasive treatment have developed as a clinically practical research issue. High field studies have shown the diagnostic value of breast MRI, but the examination costs greatly exceed those of competing conventional mammography. In this case, low-field MRI cannot merely provide typical MRI contrast, but also significantly reduce the cost of diagnosis and treatment for breast cancer patients. This work describes a unilateral breast coil and prototype intervention device, which provides a customized solution for low-field MRI-guided breast intervention. Results demonstrate that the low-field MRI breast intervention device facilitates medical intervention procedures. And the designed positioning device can locate the target lesion within 2–3 mm accuracy. Phantom tests with the customized unilateral coil indicate that the open loops perform as well as the 4-channel commercial closed breast coil, presenting a relatively good SNR (signal-to-noise ratio) and uniformity characteristics. MR scanning images of the volunteer breast using the breast intervention coil also show high SNR, which lays a foundation for further implementation of image-guided breast interventional minimally invasive surgery with the low-field MRI system. [ABSTRACT FROM AUTHOR]