Browse Prior Art Database

X-RAY IMAGE RECORDING DEVICE

IP.com Disclosure Number: IPCOM000023910D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01
Document File: 4 page(s) / 599K

Publishing Venue

Xerox Disclosure Journal

Abstract

The present invention provides a technique for electronically capturing the image information/content of an X-rayexposure in the form of electronic signals which can then be manipulated with a computer to improve diagnosis through edge enhancement and V -stretching for example0 The electronic image signals can then be stored on conventional data storage devices, such as magnetic tape or disk, thereby allowing convenient recording and retrieval of pertinent medical records. The electronic signals also allow the display of the X-rayimage on video screens or print out on a hard-copygenerator.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

X~RAYIMAGE RECORDING DEVICE

16

Proposed Classification U
0S~ CL 250/315 R
Into CL B65d 51/16

3

/

2

F/G~2

Volume 4 Number 2 March/April 1979 195

[This page contains 1 picture or other non-text object]

Page 2 of 4

X~RAYIMAGE RECORDING DEVICE (Cont'd)

The present invention provides a technique for electronically capturing the image information/content of an X~-rayexposure in the form of electronic signals which can then be manipulated with a computer to improve diagnosis through edge enhancement and V ~stretching for example

                        0 The electronic image signals can then be stored on conventional data storage devices, such as magnetic tape or disk, thereby allowing convenient recording and retrieval of pertinent medical records. The electronic signals also allow the display of the X~rayimage on video screens or print out on a hard~copygenerator.

In accordance with the teachings of the present invention, the aluminum substrate of a standard xeroradiographic plate is replaced with a non~conductivematerial I, such as glass or some dimensionally stable plastic. On this non~conductive substrate, conductive strips 2 (from 1 ~umto 5 ~umthick) are deposited. For an image resolution requirement of 5 samples/mm, a typical strip width would be 175
.um with a 2Sum gap between two adjacent strips. A photoconductive material 3, such as selenium, is vacuum deposited on the substrate 1 and conductive strips 2 to a thickness of 130 to 260 ~.um,a smooth surface being formed. On one end, each conductive strip is terminated to allow electrical connection to electronic circuits. Figure 1 depicts the photoreceptor 6 described hereinabove.

In order for photoreceptor 6 to electronically record an X~rayimage with a finite resolution, it will be used with a X~raysource as shown in Figure 2. The conical beam of the X~raysource 10 is shaped by two lead apertures 11 and 12 into a fanned beam of about 1 mm wide and long enough to reach across all conductive strips. Between the selenium coating 3 and lead shield 12 are two corona wires 13 and 14 which charge the layer 3 to a desired potential. The corona wires are located just outside aperture 15~so that an X~rayshadow is n...