Patient identification means for x-ray cassette

Details Patient identification means for x-ray cassette Patient identification means for x-ray cassette

1996-10-31

1997-08-19

Wong, Don

X-ray or gamma ray systems or devices

Auxiliary data acquisition or recording

Patient or exposure data

378185, 378187, 378182, 2504844, H05G 128

Patent

active

056595921

ABSTRACT:
A patient identification x-ray cassette comprising: a cover having a window in the cover with predetermined transmission characteristics; a prompt emission stimulable phosphor coated substrate positioned essentially below the window having a phosphor that is selected to absorb at a first bandwidth and emit at a second bandwidth and the substrate is selected to transmit at least the first bandwidth; an image receiving element sensitive to electromagnetic radiation of the second bandwidth positioned at least below the window; and placing the phosphor coated substrate against the image receiving element. The phosphor is of the type that absorbs energy in the infrared portion of the electromagnetic spectrum and emits energy in the visible portion of the electromagnetic spectrum. The substrate upon which the coating is placed is relatively transparent to infrared wavelengths. The cassette allows for patient identification data to be written onto the x-ray film contained inside the cassette via an infrared source.

REFERENCES:
patent: 1374875 (1921-04-01), Bethke
patent: 1974174 (1934-09-01), Chamberlain
patent: 3466440 (1969-09-01), Tone et al.
patent: 3631243 (1971-12-01), Byler et al.
patent: 4095111 (1978-06-01), Katz et al.
patent: 4507797 (1985-03-01), Kato
patent: 4983021 (1991-01-01), Bollen et al.
"Phosphors for the conversion of infrared radiation into visible light", J.L. Sommerdijk and A. Bril, Philips Technical Review, vol. 34, p. 24 (1974).
"NaYF.sub.4 :Yb,Er--an efficient upconversion phosphor", N. Menyuk et al, Appl. Phys. Lett., vol. 21, No. 4, p. 159 (1972).

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