X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
1998-09-09
2001-07-17
Porta, David P. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C600S415000, C378S209000, C378S181000
Reexamination Certificate
active
06263043
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is directed to a medical examination apparatus of the type wherein both magnetic resonance (MR) images and x-ray exposures of a patient are made.
2. Description of the Prior Art
Magnetic resonance (MR) is a proven diagnosis method that enables tomograms and three-dimensional reconstructions. The examination time, however, is relatively long and lies in the order of magnitude of several minutes. For specific examinations, for example of the skull, thorax, abdomen or mammaries, it is meaningful to produce an x-ray exposure before and/or during the MR examination for shortening the exposure time and/or for planning the further execution of the MR examinations. The diagnosis quality is additionally enhanced as a result. German OS 39 31 531 discloses a medical examination system having an MR apparatus and an x-ray exposure device, wherein the image data are superimposed for improving the diagnosis or are individually, i.e. separately, presented. Two individual pick-up devices having two individual support devices for the patient are provided.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a medial diagnostic installation wherein x-ray exposures of a patient disposed in an MR apparatus can also be prepared without re-situating the patient on the patient bed.
This object is inventively achieved in a medical diagnostic installation having an MR apparatus into and out of which a patient is moved on a patient bed, and an x-ray source positionable above the bed outside of the MR apparatus, and a solid-state detector on formed by a matrix of amorphous silicon detector elements, which is insensitive to magnetic fields, arranged in the patient bed for the preparation of x-ray exposures. The detector can be displaceably mounted within the bed in order to enable the exposure of different body regions. A ceiling stand for the x-ray source can be provided for the producing x-ray exposures.
The operation (starting the MR sequences, triggering the radiation for the x-ray system, image optimization, image compilation and printout of the images) of the MR system and of the digital x-ray system can ensue at a common work station that simultaneously serves the purpose of observing the registered images.
REFERENCES:
patent: 4247778 (1981-01-01), Waerve
patent: 5497408 (1996-03-01), Kayser
patent: 5807254 (1998-09-01), Meulenbrugge et al.
patent: 5818901 (1998-10-01), Schulz
patent: 39 31 531 (1990-04-01), None
patent: WO 96/00520 (1996-01-01), None
Hobden Pamela R.
Porta David P.
Schiff & Hardin & Waite
Siemens Aktiengesellschaft
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