X-ray diagnostic apparatus for tomosynthesis having a detector that detects positional relationships
First Claim
1. An X-ray diagnostic apparatus for generating a tomosynthesis recording, comprising:
- a radiation transmitter that transilluminates an object under examination from a plurality of different directions;
a radiation receiver that is adjustably mounted relative to said radiation transmitter and that produces radiation signals for generating the tomosynthesis recording of the object under examination;
an image-generating device that receives the radiation signals for each of the plurality of different directions and computes the tomosynthesis recording of the object under examination;
at least one position detector that produces position signals in accordance with a positional relationship between at least any two of (i) said radiation transmitter, (ii) said radiation receiver, and (iii) the object under examination, wherein said position detector is mounted on at least any one of said radiation transmitter, said radiation receiver, or the object under examination; and
an evaluation device that (i) evaluates the position signals to determine a deviation between the positional relationship and a desired relationship, (ii) generates correction signals in accordance with the evaluated deviation, and (iii) outputs the correction signals to said image-generating device.
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Accused Products
Abstract
An diagnostic apparatus for generating X-ray exposures for tomosynthesis includes a position detector (2, 4) for registering the mutual positional relationship between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination. The position detector (2, 4) can be arranged in part or in whole on the radiation transmitter (1), on the radiation receiver (3) or on the object (7) under examination. An evaluation device (11) evaluates the signals from the position detector (2, 4) and generates correction signals if the relative position between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination deviates from the home position. The correction signals are then fed to an image-generating device (12) for use in the image processing.
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Citations
17 Claims
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1. An X-ray diagnostic apparatus for generating a tomosynthesis recording, comprising:
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a radiation transmitter that transilluminates an object under examination from a plurality of different directions; a radiation receiver that is adjustably mounted relative to said radiation transmitter and that produces radiation signals for generating the tomosynthesis recording of the object under examination; an image-generating device that receives the radiation signals for each of the plurality of different directions and computes the tomosynthesis recording of the object under examination; at least one position detector that produces position signals in accordance with a positional relationship between at least any two of (i) said radiation transmitter, (ii) said radiation receiver, and (iii) the object under examination, wherein said position detector is mounted on at least any one of said radiation transmitter, said radiation receiver, or the object under examination; and an evaluation device that (i) evaluates the position signals to determine a deviation between the positional relationship and a desired relationship, (ii) generates correction signals in accordance with the evaluated deviation, and (iii) outputs the correction signals to said image-generating device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An X-ray diagnostic apparatus for tomosynthesis, comprising:
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a radiation transmitter and a radiation receiver provided for generating tomosynthesis recordings of an object under examination, said radiation transmitter and said radiation receiver being adjustably mounted such that, when the object under examination is transilluminated from different directions, signals are derived at said radiation receiver for each of the directions; an image-generating device receiving the signals in order to calculate a tomosynthesis recording of the object under examination; at least one position detector provided for registering, as position signals, a positional relationship between at least one of (i) said radiation transmitter and said radiation receiver, (ii) said radiation transmitter and the object under examination, and (iii) said radiation receiver and the object under examination, said position detector being arranged on at least one of said radiation transmitter, said radiation receiver, and the object under examination; and an evaluation device provided for evaluating the position signals from said position detector, and for generating correction signals if the positional relationship deviates from a desired relationship; whereby the correction signals are supplied from said evaluation device to said image-generating device.
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Specification