MRI-guided breast biopsy is usually a preferred alternative to surgical biopsy. It is used when ultrasound or mammogram (stereotactic) guided biopsy is not appropriate because the area of concern is not well seen by mammography or ultrasound. Sometimes, MRI-guided biopsy is called for when an abnormality is seen only on a breast MRI and cannot be visualized by ultrasound or mammogram.
The positioning for MRI-guided biopsy is similar to that for breast MRI imaging. The patient lies prone on the table and the breast to be biopsied is lightly compressed between a plate and a localizing grid under the MRI table. Gadolinium is injected into a vein and preliminary MRI pictures are obtained. Guided by MRI imaging, the doctor places a needle into the suspicious area and removes a sample. A core needle, which removes a small, cylindrical-shaped tissue sample, is generally used. The procedure requires only a topical anesthetic and leaves little to no scarring. MRI-guided breast biopsy costs less than a surgical biopsy, can be done in less than an hour and has no significant complications. At Montclair Radiology, your MRI-guided biopsy is made faster and more accurate with the aid of DynaCad technology, which streamlines the biopsy process.