Method and x-ray device for picking up x-ray images of a substantially rhythmically moving vessel or organ
First Claim
1. A method for picking up X-ray images of a substantially rhythmically moving vessel or organ, comprising the steps of:
- slowly rotating an X-ray image pick-up system, having an X-ray source and an X-ray receiver, around a subject in a circular path at an angular velocity of less than 6°
per second and obtaining a plurality of digital X-ray images of said subject during said slow rotation, said subject containing a vessel or an organ exhibiting substantially rhythmic movement;
triggering pick up of the respective images in said plurality of digital X-ray images dependent on said substantially rhythmic movement; and
reconstructing a three-dimensional image from said plurality of digital X-ray images after completing said slow rotation.
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Accused Products
Abstract
In a method and X-ray device for the pickup of X-ray images in an examination of a vessel or organ that moves substantially rhythmically, particularly for the determination of deposits in a vessel, such as a coronary vessel, the X-ray pickup system of an X-ray device is slowly moved along a circular orbit at an angular velocity of less than 6° per second, during which a number of digital X-ray images are picked up, with the image pickup being triggered by the vessel motion or organ motion acquired during the system movement or by an organ motion that causes the vessel motion, and a 3D image is reconstructed on the basis of the individual images, after the image pickup has ensued.
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Citations
20 Claims
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1. A method for picking up X-ray images of a substantially rhythmically moving vessel or organ, comprising the steps of:
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slowly rotating an X-ray image pick-up system, having an X-ray source and an X-ray receiver, around a subject in a circular path at an angular velocity of less than 6°
per second and obtaining a plurality of digital X-ray images of said subject during said slow rotation, said subject containing a vessel or an organ exhibiting substantially rhythmic movement;
triggering pick up of the respective images in said plurality of digital X-ray images dependent on said substantially rhythmic movement; and
reconstructing a three-dimensional image from said plurality of digital X-ray images after completing said slow rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An X-ray device for picking up X-ray images of a vessel or organ exhibiting substantially rhythmic movement, comprising:
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an X-ray image pick-up system having an X-ray source and an X-ray receiver for obtaining a plurality of two-dimensional projection images from different projection angles of a subject, said subject containing a vessel or an organ exhibiting substantially rhythmic movement;
means for rotating said X-ray image pick-up system around said subject at an angular velocity of less than 6°
per second, said X-ray receiver obtaining said plurality of two-dimensional projection images during said rotation;
an image processor, supplied with said plurality of two-dimensional images, for reconstructing a three-dimensional image of said vessel or organ from said plurality of two-dimensional images;
a monitor for identifying said substantially rhythmic motion associated with said vessel or organ and generating a motion-dependent signal corresponding to said motion; and
a control unit, supplied with said motion-dependent signal, for generating trigger signals to said X-ray image pick-up system to trigger pick up of said plurality of two-dimensional projection images at a same time in each motion phase of said vessel or organ. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification