X-ray or gamma ray systems or devices – Specific application – Stereoscopy
Patent
1990-10-03
1992-02-18
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Stereoscopy
378 62, 378 99, A61B 602
Patent
active
050900382
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.
REFERENCES:
patent: 4214267 (1980-07-01), Roese et al.
patent: 4769701 (1988-09-01), Sklebitz et al.
Howell Janice A.
Kabushiki Kaisha Toshiba
Porta David P.
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