Breast biopsy and needle localization using tomosynthesis systems
View Patent ↗Methods, devices, apparatuses and systems are disclosed for performing mammography, such as utilizing tomosynthesis in combination with breast biopsy.
1. A method for needle localization for breast biopsy, said method comprising:
(a) performing a tomosynthesis scan of a patient's compressed breast using a source of an imaging xray beam that moves through a multiplicity of imaging positions along a source trajectory, and obtaining image data from the tomosynthesis scan and deriving therefrom (i) tomosynthesis projection images of the compressed breast taken from more than two of the imaging positions of the source relative to the compressed breast and (ii) tomosynthesis reconstructed slice images representing respective slices of the compressed breast;
(b) displaying at least one of the tomosynthesis images of the patient's compressed breast, wherein the displayed at least one of the tomosynthesis images has a known location within a depth of the compressed breast;
(c) indicating on a user interface of the display on the at least one of the tomosynthesis images an area of interest of the patient's compressed breast;
(d) determining therefrom three-dimensional coordinates of the area of interest;
(e) positioning a biopsy needle based on the three-dimensional coordinates of the area of interest, such that a portion of the biopsy needle extends into a field defined by the xray beam without penetrating the area of interest and the biopsy needle is positioned so as to not form an image artifact on the area of interest in relation to the xray beam;
(f) after positioning the biopsy needle, imaging the patient's compressed breast and the biopsy needle so as to obtain an image; and
(g) after imaging the patient's breast and the biopsy needle, determining three-dimensional coordinates of the biopsy needle relative to the area of interest.
2. The method of claim 1 , further comprising displaying at least one image of the area of interest and the biopsy needle.
3. The method of claim 1 , further comprising:
displaying the three-dimensional coordinates of the area of interest;
allowing the biopsy needle to be manually positioned; and
dynamically displaying a needle tip coordinate as the biopsy needle is manually positioned.
4. The method of claim 1 , further comprising:
determining a volume of the area of interest; and
displaying the volume of the area of interest.
5. The method of claim 1 , where the needle positioning in operation (e) is via a motorized mechanism.
6. The method of claim 1 , wherein the needle positioning in operation (e) is performed manually.
7. The method of claim 1 , wherein the needle positioning in operation (e) is performed by operating a hand-operated device.
8. The method of claim 1 , wherein the imaging is performed as part of a tomosynthesis scan.
9. The method of claim 1 , wherein the imaging is performed as part of a stereotactic scan.
10. The method of claim 1 , further comprising performing, with the biopsy needle, a biopsy of the area of interest, based at least in part on the three-dimensional coordinates.
11. The method of claim 1 , further comprising obtaining a post-biopsy image of the patient's compressed breast.
12. The method of claim 1 , wherein the three-dimensional coordinates of the area of interest are determined by:
calculating a two-dimensional location of the area of interest in the displayed at least one of the tomosynthesis images; and
calculating a third dimensional location of the area of interest based at least in part on the known location within the depth of the compressed breast of the displayed at least one of the tomosynthesis images.