X-ray or gamma ray systems or devices – Electronic circuit – With display or signaling
Patent
1995-03-10
1996-02-20
Porta, David P.
X-ray or gamma ray systems or devices
Electronic circuit
With display or signaling
378 987, H05G 164
Patent
active
054935989
ABSTRACT:
A fluoroscopic imager for observing a living creature with reduced x-ray dosage uses a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high that brightness flicker is acceptably low to a human observer; an x-ray source that can be gated on for intervals not as long as a display frame; and a fluoroscopic camera, including a raster-scanning video camera and x-ray-to-light conversion apparatus with persistence not appreciably longer than a display frame and frame-filling apparatus. Especially during purely diagnostic procedures, the frame-filling apparatus generates a continuous succession of frames of image samples at the display frame rate by interpolating between successively grabbed frames of image samples. During procedures in which interpolating between successively grabbed frames of image samples introduces unacceptable delay in the observed image, the frame-filling apparatus generates the continuous succession of frames of image samples by extrapolating from each most recently grabbed frame.
REFERENCES:
patent: 3745245 (1973-07-01), Yunde et al.
patent: 4002910 (1977-01-01), LeMay
patent: 4415889 (1983-11-01), Davis
patent: 4460958 (1984-07-01), Christopher et al.
patent: 4481509 (1984-11-01), Sasaki et al.
patent: 4555728 (1985-11-01), Fenster et al.
patent: 4644398 (1987-02-01), Shimoni
patent: 4852139 (1989-07-01), Sandvik et al.
patent: 4905264 (1990-02-01), Ogura
patent: 5224141 (1993-06-01), Yassa et al.
Itoh et al. "A Dose-Reduced TV Fluoroscopy System," Toshita Review, No. 79, Mar. 1973, Japan, pp. 19-24.
Abdel-Malek et al., "Image Segmentation Via Motion Vector Estimates", SPIE Medical Imaging IV: Image Processing, vol. 1233, Feb. 6, 1990, Bellingham, Washington, pp. 366-371.
Abdel-Malek Aiman A.
Bloomer John J.
Yassa Fathy F.
Bruce David Vernon
General Electric Company
Mora Enrique J.
Porta David P.
Snyder Marvin
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