X-ray or gamma ray systems or devices – Electronic circuit – With display or signaling
Patent
1998-05-11
1999-06-01
Porta, David P.
X-ray or gamma ray systems or devices
Electronic circuit
With display or signaling
378 988, H05G 164
Patent
active
059094788
ABSTRACT:
A portable, self-contained, electronic radioscopic imaging system uses a pulsed X-ray source, a remote X-ray sensor, and a self-contained, display and controller unit to produce, store, and/or display digital radioscopic images of an object under investigation. The pulsed X-ray source transmits a burst of narrow pulses of X-rays at the object being investigated at a low repetition rate. The X-ray sensor utilizes an X-ray scintillating screen in combination with either an integrating CCD camera, or an active matrix of thin film transistors and sample-and-hold photodiodes, to produce an integrated signal representative of the accumulated number of flashes of radiation (X-ray pulses that pass through the object) that are sensed in a given pixel area of the scintillating screen. The self-contained display and controller unit utilizes digital signal processing within an enhanced portable computer, including a flat solid state display panel and associated drive circuitry, in order to display the full dynamic range and resolution of the sensor. A modem allows the digitized image to be sent to a remote location where the exact same image can be recreated for analysis by off-site experts.
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Polichar Raulf M.
Smith Scott T.
Porta David P.
Science Applications International Corporation
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