MAMMOGRAPHY METHOD AND MAMMOGRAPHY APPARATUS

• US 20100290585A1
• Filed: 05/12/2010
• Published: 11/18/2010
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Siemens Healthcare GMBH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Eliasson, Eva
• Granted Patent: US 8,194,819 B2
• Time in Patent Office: Days
• US Class Current: 378/37
• CPC Class Codes: A61B 6/025 Tomosynthesis
• CPC Class Codes: A61B 6/0435 with means for imaging suspended breasts
• CPC Class Codes: A61B 6/4007 characterised by using a plurality of source units
• CPC Class Codes: A61B 6/4241 using energy resolving detectors, e.g. photon counting
• CPC Class Codes: A61B 6/466 adapted to display 3D data
• CPC Class Codes: A61B 6/482 involving multiple energy imaging
• CPC Class Codes: A61B 6/502 for diagnosis of breast, i.e. mammography

Abstract

In a mammography method and a mammography apparatus to generate x-ray images of a breast, a support unit is positioned between the breasts. In the support unit two x-ray detectors are arranged with acquisition surfaces that are flat and parallel to one another. The acquisition surfaces face away from one another and respectively toward one of the breasts. At least one x-ray image of each breast is acquired while both breasts are simultaneously pressed against the support unit.

Claims

1. A mammography method to generate x-ray images of both breasts of a patient, comprising the steps of:

providing a support unit with two x-ray detectors on opposite sides of the support unit, each of said x-ray detectors having a radiation detection surface that is flat, with the respective radiation detection surfaces being parallel to each other and facing away from each other;

relatively positioning a patient and said support unit to cause said support unit to be located between the breasts of the patient with the detection surfaces being respectively adjacent the respective breasts of the patient;

compressing each breast of the patient against the respective detection surface adjacent thereto; and

exposing the breasts of the patient to x-ray radiation while both breasts are simultaneously pressed against the respective detection surfaces, and acquiring image data from each breast with the respective x-ray detectors, and emitting said image data at respective outputs of the respective x-ray detectors.

2. A mammography method as claimed in claim 1 wherein the step of exposing the breast to x-ray radiation comprises irradiating a first of the breasts with x-ray emitted from a first x-ray source and irradiating a second of the breast with x-rays emitted by a second x-ray source.

3. A mammography method as claimed in claim 1 wherein the step of exposing the breasts to x-ray radiation comprises irradiating each breast with x-ray radiation from a plurality of different projection angles and obtaining a projection image of each breast from each projection angle, and generating a tomosynthesis 3D x-ray image of each breast from the projection images thereof.

4. A mammography method as claimed in claim 1 comprising administering a contrast agent to the patient that enhances selected tissue in each breast prior to exposing the breasts to x-ray radiation.

5. A mammography method as claimed in claim 4 comprising acquiring a plurality of x-ray image of each breast in temporal succession that record a time curve of progression of said contrast agent in each breast.

6. A mammography method as claimed in claim 4 comprising acquiring at least two x-ray images of each breast by exposing each breast to x-rays having different energies and obtaining one x-ray image of each breast at each energy.

14. A mammography method as claimed in claim 5 wherein said x-ray detectors are each energy-discriminating x-ray detectors.

7. A mammography apparatus to generate x-ray images of both breasts of a patient, comprising:

one x-ray source;

a support unit with two x-ray detectors on opposite sides of the support unit, each of said x-ray detectors having a radiation detection surface that is flat, with the respective radiation detection surfaces being parallel to each other and facing away from each other;

said support unit being configured for relative positioning thereof with respect to cause said support unit to be located between the breasts of the patient with the detection surfaces being respectively adjacent the respective breasts of the patient;

compression plates that respectively compress each breast of the patient against the respective detection surface adjacent thereto; and

said x-ray source being operable to expose the breasts of the patient to x-ray radiation while both breasts are simultaneously pressed against the respective detection surfaces, and said respective x-ray detectors acquiring image data from each breast and emitting said image data at respective outputs of the respective x-ray detectors.

8. A mammography apparatus as claimed in claim 7 comprising a rotatable mount at which said x-ray source is mounted for rotation around the breasts to irradiate each breast with x-ray radiation from a plurality of different projection angles and to obtain a projection image of each breast from each projection angle, and a computer configured to generate a tomosynthesis 3D x-ray image of each breast from the projection images thereof.

9. A mammography apparatus as claimed in claim 7 wherein said x-ray source is operable to acquire at least two x-ray images of each breast by exposing each breast to x-rays having different energies and to obtain one x-ray image of each breast at each energy.

10. A mammography method as claimed in claim 9 wherein said x-ray detectors are each energy-discriminating x-ray detectors.

11. A mammography apparatus to generate x-ray images of both breasts of a patient, comprising:

two x-ray sources;

a support unit with two x-ray detectors on opposite sides of the support unit, each of said x-ray detectors having a radiation detection surface that is flat, with the respective radiation detection surfaces being parallel to each other and facing away from each other;

said support unit being configured for relative positioning thereof with respect to a patient to cause said support unit to be located between the breasts of the patient with the detection surfaces being respectively adjacent the respective breasts of the patient;

compression plates that respectively compress each breast of the patient against the respective detection surface adjacent thereto; and

said two x-ray sources being operable to respectively expose the breasts of the patient to x-ray radiation while both breasts are simultaneously pressed against the respective detection surfaces, and the respective x-ray detectors acquiring image data from each breast with the respective x-ray radiation from the two x-ray detectors, and emitting said image data at respective outputs of the respective x-ray detectors, said image data for one of the breasts being obtained from one of the two x-ray sources, and the image data for the other breast being obtained with the other of the two x-ray sources.

12. A mammography apparatus as claimed in claim 11 comprising a rotatable mount at which said two x-ray sources are mounted for rotation around the breasts to irradiate the respective breasts with x-ray radiation from a plurality of different projection angles to obtain a projection image of each breast from each projection angle, and a computer configured to generate a tomosynthesis 3D x-ray image of each breast from the projection images thereof.

13. A mammography apparatus as claimed in claim 11 wherein each of said two x-ray sources is operable to acquire at least two x-ray images of the respective breasts by exposing each breast to x-rays having different energies and obtaining one x-ray image of each breast at each energy.