Breast surgery guidance based on breast MR images and radioactive markers

Abstract

A system and method are provided for guiding surgery using MR images and radioactive markers. The method comprises reconstructing the surface of an anatomical structure and a gamma probe orientated to optimize a radioactivity reading from a radioactive seed placed at a target location in the anatomic structure for each of one or more positions of the gamma probe. The position and orientation of the gamma probe is detected in each reconstructed surface to estimate a position of the radioactive seed relative to the reconstructed surface.

Description

technical field [0001] The present invention relates to the field of medical imaging, and more particularly to guided surgery using MR images and radioactive labels. Background technique [0002] The most common imaging modalities used in the image-based diagnostic examination of breast abnormalities are: X-ray mammography, ultrasound, and dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI). One of the uses of DCE MRI is to plan the surgical removal of a tumor (lumpectomy). Breast MRI has been shown to be superior to ultrasound and X-ray imaging for estimation of tumor shape and extent. [0003] DCE breast MRI is typically performed with the patient in the prone position and the breast positioned in a dedicated breast MRI coil. In contrast, during breast surgery, the patient is in the supine position. Repositioning of the patient from a prone to a supine position with the breast in a dedicated MRI coil results in significant deformation of the breast. These ...

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Problems solved by technology

These methods, although indicative of the real-time location of the tumor, do not give any indication of the extent o

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