Filmless digital x-ray system

• US 5,844,961 A
• Filed: 07/26/1996
• Issued: 12/01/1998
• Est. Priority Date: 07/26/1995
• Status: Expired due to Fees

• Current Assignee: MedFX Systems Co.
• Original Assignee: MedFX Systems Co.
• Inventors: McEvoy, Steven P., Richardson, Kent R., Hatcher, David C., Ochotta, Emilian S., Mah, Raymond T.
• Primary Examiner(s): Wong, Don
• Application Number:
  US08/690,471
• Time in Patent Office: 858 Days
• Field of Search: 378/38-40, 378/98.8, 378/98.2, 378/98.3, 378/169, 378/176, 378/182, 378/183, 378/186, 378/188, 378/189, 378/191
• US Class Current: 378/98.8
• CPC Class Codes: A61B 6/4494 Means for identifying the diagnostic device
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04N 23/30 for generating image signals from X-rays
• CPC Class Codes: H04N 5/32 Transforming X-rays cameras or camera modules for generating image signals from X-rays H04N23/30; circuitry of SSIS for transforming X-rays into image signals H04N25/30
• CPC Class Codes: H05G 1/64 Circuit arrangements for X-ray apparatus incorporating image intensifiers

Abstract

A filmless digital x-ray cassette comprising the following. A standard sized x-ray cassette housing having external dimensions approximately equal to the external dimensions of a standard x-ray cassette. An array system having a plurality of light sensitive pixels, the array system being disposed at least partially within the standard sized x-ray cassette housing. An electronics system, coupled in communications with the array system, the electronics system converting pixel values received from the array system into a digital image. A communications circuit, coupled to the electronics system, having a digital image output.

Claims

1. A filmless digital x-ray cassette comprising:

a standard sized x-ray cassette housing having external dimensions approximately equal to the external dimensions of a standard x-ray cassette;

an array system having a plurality of light sensitive pixels, said array system being disposed at least partially within said standard sized x-ray cassette housing;

an electronics system, coupled in communications with said array system, said electronics system converting pixel values received from said array system into a digital image, said electronics system comprising,

an image capture program for converting said pixel values from said array system into a digital image,

a cassette id circuit storing information for identifying said filmless digital x-ray cassette,

an image identification program for using said information to identify said digital image as being captured from said filmless digital x-ray cassette; and

a communications circuit, coupled to said electronics system, having a digital image output.

2. The filmless digital x-ray cassette of claim 1 wherein said standard sized x-ray cassette housing has a first internal surface and a second internal surface, and wherein said digital x-ray cassette further includes the following elements positioned between said first internal surface and said second internal surface:

an illuminating screen positioned near said first internal surface and between said first internal surface and said second internal surface, said illuminating screen generating visible light in response to receiving x-ray light;

said array system being positioned between said illuminating screen and said second internal surface, said array system further being positioned to receive said visible light;

a second liner positioned between array system and said second internal surface;

said electronics system at least being partially positioned between said second liner and said second internal surface; and

wherein said second liner comprises a substance to substantially impede the transmission of x-ray light through to said electronics system.

3. The filmless digital x-ray cassette of claim 1 wherein said image identification program encodes said information into a portion of said digital image.

4. The filmless digital x-ray cassette of said claim 1 wherein said image identification program encodes said information with a portion of said digital image to identify said digital image.

5. The filmless digital x-ray cassette of claim 1 wherein said image identification program uses a public key authentication system to identify said digital image as being captured from said filmless digital x-ray cassette.

6. The filmless digital x-ray cassette of claim 1 wherein said information includes information assigned by an insurance company.

7. The filmless digital x-ray cassette of claim 1 further comprising a compression circuit, said compression circuit for compressing said digital image to reduce the storage and transmission requirements of said digital image.

8. The filmless digital x-ray cassette of claim 7 wherein said compression circuit is a lossless compression circuit.

9. The filmless digital x-ray cassette of claim 7 wherein said compression circuit is a lossy compression circuit.

10. The filmless digital x-ray cassette of claim 7 wherein said electronics system is further for associating capture date, image number, patient identify, and health care provider identity, with said digital image.

11. The filmless digital x-ray cassette of claim 10 wherein said electronics system is further for associating operator identity information with said digital image.

12. A digital x-ray machine comprising:

an x-ray source;

an x-ray cassette holder;

a digital x-ray cassette positioned at least partially within said x-ray cassette holder and positioned to receive x-rays from said x-ray source; and

an image identification system including a digital x-ray cassette identifier, said image identification system for using said digital x-ray cassette identifier to identify each image captured by said digital x-ray cassette as being captured by said digital x-ray cassette.

13. The digital x-ray machine of claim 12 further comprising a computer system for displaying digital x-ray images from said digital x-ray cassette and wherein said x-ray machine includes an electronics package that allows for wireless communications of said digital x-ray images from said digital cassette to said computer system.

14. The digital x-ray machine of claim 12 wherein said x-ray machine includes a shield defining an aperture for x-rays to pass through before being received at said digital x-ray cassette and wherein said digital x-ray cassette includes a digital sensor and wherein said digital x-ray cassette further includes a means for maintaining said digital sensor positioned to receive said x-rays through said aperture.

15. A direct capture digital x-ray system for capturing digital x-ray images, said system comprising:

an x-ray machine having a standard sized x-ray cassette holder;

a direct capture digital x-ray cassette positioned in said x-ray cassette holder;

a computer system coupled to communicate with said direct capture digital x-ray cassette, said computer system coupled to receive digital images from said direct capture digital x-ray cassette; and

wherein, images received from said direct capture digital x-ray cassette are associated with an identifier that identifies the digital images as being associated with said direct capture digital x-ray cassette.

16. The direct capture digital x-ray system of claim 15 wherein said computer system associates, with each image received from said digital capture x-ray cassette, tag information, wherein said tag information is used to authenticate said image.

17. The direct capture digital x-ray system of claim 16 wherein said tag information is encoded into a digital signature that is associated with each image.

18. The direct capture digital x-ray system of claim 15 wherein said computer system includes a image receiving stand and wherein said direct capture digital x-ray cassette is adapted to be positioned on said image receiving stand, and wherein said direct capture digital x-ray cassette is for communicating said digital images to said computer system when said direct capture digital x-ray cassette is positioned on said image.

19. The direct capture digital x-ray system of claim 15 wherein said direct capture digital x-ray cassette includes a power source and wherein said image receiving stand includes a recharger for recharging said power source when said direct capture digital x-ray cassette is positioned on said image receiving stand.