Portable, digital X-ray apparatus for producing, storing, and di

Details Portable, digital X-ray apparatus for producing, storing, and di Portable, digital X-ray apparatus for producing, storing, and di

1995-06-23

1997-03-04

Wong, Don

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

378102, H05G 164

Patent

active

056087748

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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Tannas, "Evolution of Flat-Panel Displays", Proceedings of the IEEE, 82:4, pp. 499-509 (Apr. 1994).
Antonuk, et al., "Considerations for High Frame Rate Operation of Two-Dimensional a-Si:H Imaging Arrays", Materials Research Society Symposium Proceedings, 297:945-950 (1993).
VIDISCO, Ltd., Sales Brochure for "A-500E Portable Video Based X-Ray Inspection System".

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