Siemens Aktiengesellschaft

Wilhelm Hanke

Thomas Mertelmeier

Norbert Krause

Sylvia Heywang-Koebrunner

Juergen Ruhl

Ludger Freisen, Deceased

Michael Morita

An x-ray source has multiple electron sources spaced apart from each other along a longitudinal direction that is defined as being parallel to the rotation axis of a rotating anode which is common to all of the electron sources. Each electron source emits electrons that strike the anode at respective strike points that are spatially separated from each other along the longitudinal direction, to produce respective emission centers, from which x-rays are emitted, each emission center being associated with respective ones of the x-ray sources.

X-ray source and X-ray system

In a continuous mammography procedure, the breast of a subject is fixed in place in a retention device, and a first x-ray image is generated by irradiating the breast in the retention device. While the breast is still held in the retention device, the first x-ray image is evaluated to define a condition for generating a second x-ray image. The second x-ray image is then generated according to the defined condition, with the breast still in the same position in the retention device.

Method for producing an X-ray image during a mammography

A mammography system has an x-ray source, a detector and a compression plate arranged in the beam path between the source and the detector. The x-ray source, the detector and the compression plate are mounted on a vertical column such that they respectively pivot around separate pivot axes. The three pivot axes are spaced apart from one another and oriented substantially parallel to one another and substantially perpendicular to a surface normal of the detector. The x-ray source and the compression plate are held on the vertical column such that they can be displaced in a plane oriented approximately vertical to their pivot axes. The mammography system is operable to obtain two sets of tomosynthesis data respectively with different tube-to-detector distances.

Mammography system and operating method

In order to achieve a particularly good image sharpness, in a method and apparatus for radiological imaging of an examination subject, a digital x-ray detector is arranged behind the subject and a scattered-ray grid is positionable between the subject and the x-ray detector. The scattered-ray grid is designed for reduction of the scattered ray proportion of x-rays penetrating the subject. If the thickness of the subject is below a defined thickness, the scattered-ray grid is removed from the beam path.

X-ray imaging apparatus and operating method therefor, with subject thickness-dependent use of a scattered ray grid

A stereotactic auxiliary attachment for a nuclear magnetic resonance tomography apparatus for use in conducting mammographic examinations wherein a needle localization of a breast mass or needle marking of a breast mass are implemented with high precisions includes two parallel compressions plates mounted so as to be displaceable relative to one each other, and between which an examination subject such as breast, can be compressed. At least one of the plates has a reception coil of the magnetic resonance tomography apparatus allocated thereto, and at least one of the plates has holes therein for the introduction of a biopsy or marking needle. One of both of the plates can be provided with markings which are identifiable in the magnetic resonance image (tomogram).

Stereotactic auxiliary attachment for a nuclear magnetic resonance

The conductor structures of an antenna in a nuclear magnetic resonance tomography apparatus are covered with lamellae that extend in longitudinal direction of the examination space and have large-area connections at the end sides of the antenna to a shielding that surrounds the examination space. In an alternative embodiment, the lamellae extend the azimuthal direction and are connected to a shielding (3) surrounding the examination space at the respective longitudinal edges of the conductor structure of the antenna via broad-web, planar conductors with a free cross section remaining between the conductors.

Antenna arrangement with shielding for a nuclear magnetic resonance

A cable guide for use in a nuclear magnetic resonance tomography apparatus is provided for cable for making electrical connections between devices secured to a patient bed and devices disposed outside of the examination space. The cable guide is a grounded, electrical cable channel disposed beneath the patient bed and above the lower sub-antenna of a whole-body antenna and above at least one wall of the examination space. The cable channel has a V-shape, and is rounded at an edge facing the examination space, this edge projecting beyond the height of the lower sub-antenna. The cable guide substantially protects the cable against coupling with other components. The examination space remains free of built-in units.

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Rückersdorf, Germany

Wilhelm Hanke