Stereoscopic X-ray apparatus
First Claim
1. A stereoscopic X-ray apparatus comprising:
- X-ray image taking means for emitting X-rays to a subject under examination from plural directions while moving around the subject and taking plural X-ray images of the subject;
storage means for storing said X-ray images taken by said X-ray image taking means, said storage means including first to nth memories for storing first to nth X-ray images in the order in which they are taken, respectively; and
stereoscopic display means for reading two X-ray images with a predetermined difference in the direction of emission of X-rays from said storage means and visually displaying the two X-ray images, said stereoscopic display means including means for reading the X-ray images from said first to nth memories in sequence and the X-ray images from said memories following the (i-1)th memory in sequence and synchronously with reading from said first to nth memories (where i stands for a positive integer corresponding to the predetermined difference).
1 Assignment
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Accused Products
Abstract
Pulsed X-rays are emitted to a subject under examination at regular intervals while an arm supporting an X-ray tube and a combination of an image intensifier tube and a TV camera so as to interpose the subject therebetween is rotated around the subject at a given speed, thereby obtaining a number of X-ray images of the subject at intervals of a constant angle of view. The X-ray images are converted to optical images which are taken by the TV camera to obtain image signals. Image signals are stored in respective frame memories. Two image signals with an interval of a predetermined number of frames are read from the frame memories and displayed on right and left display screens. The displayed images are viewed by an observer through a stereoscopic viewer for guiding the right and left images to the right and left eyes of the observer, respectively. The frame interval between the two images is selected such that the displayed images have a predetermined difference in angle of view which will give the observer a desired sensation of stereoscopy. Even if only the two images are displayed statically or even if pairs of such two images are displayed dynamically, therefore, stereoscopic presentation of images of the subject can be made.
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Citations
26 Claims
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1. A stereoscopic X-ray apparatus comprising:
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X-ray image taking means for emitting X-rays to a subject under examination from plural directions while moving around the subject and taking plural X-ray images of the subject; storage means for storing said X-ray images taken by said X-ray image taking means, said storage means including first to nth memories for storing first to nth X-ray images in the order in which they are taken, respectively; and stereoscopic display means for reading two X-ray images with a predetermined difference in the direction of emission of X-rays from said storage means and visually displaying the two X-ray images, said stereoscopic display means including means for reading the X-ray images from said first to nth memories in sequence and the X-ray images from said memories following the (i-1)th memory in sequence and synchronously with reading from said first to nth memories (where i stands for a positive integer corresponding to the predetermined difference). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stereoscopic X-ray apparatus comprising:
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X-ray image taking means for emitting X-rays to a subject under examination from plural directions while moving around the subject and taking plural X-ray images of the subject; storage means for storing said X-ray images taken by said X-ray image taking means; and stereoscopic display means for reading two X-ray images with a predetermined difference in the direction of emission of X-rays from said storage means and visually displaying the two X-ray images, said stereoscopic display means including first means for continuously displaying a number of X-ray images in the order in which they are taken and second means for displaying X-ray images, each of which has a predetermined difference in the direction of emission of X-rays with respect to a respective individual one of the X-ray images which is being displayed by said first means. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A stereoscopic X-ray apparatus comprising:
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a source of X-rays for emitting pulsed X-rays to a subject under examination at regular intervals; an image intensifier for converting an X-ray image resulting from transmission of the pulsed X-rays emitted from said source of X-rays through said subject to an optical image; a camera coupled to said image intensifier for taking said optical image output from said image intensifier and output image data; arm means for supporting said source of X-rays, said image intensifier, and said camera so as to interpose said subject among said source of X-rays and image intensifier and varying the direction of emission of pulsed X-rays to said subject continuously; memory means for storing a number of frames of image data output from said camera and representing X-ray images of said subject taken from a number of directions; readout means for reading a first sequence of frames of image data and a second sequence of frames of image data simultaneously from said memory means in the order in which they are taken, corresponding frames of image data in said first and second sequences being read at an interval of a predetermined number of frames; and display means for providing stereoscopic presentation of X-ray images of said subject using said first and second sequences of frames of image data read from said memory means by said readout means. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification