X-ray film identification means专利检索-不透X射线射线不透性诊断设备和程序专利检索查询-专利查询网

X-ray film identification means

阅读：371发布：2023-07-09

专利汇可以提供X-ray film identification means专利检索，专利查询，专利分析的服务。并且Means for contrastingly projecting X-rays for identification purposes upon an X-ray film carried by a cassette include, at the front face of the cassette (the side facing the radiation source), an indicia sheet of X-ray opaque material form which a plurality of identifying characters have been punched out, and imperforate X-ray absorbent sheet material interposed between said indicia sheet and the radiation source for attenuating the radiation beam passing to said indicia sheet. The indicia sheet and the imperforate sheet material, which are arranged to be subjected to X-rays simultaneously with the imposing of such radiation upon the person or thing to be identified, may be varied in their relative opacities and in their cumulative opacity, depending upon the radiation strength and the X-ray absorption characteristic of the subject being photographed. Said indicia sheet and imperforate sheet material are advantageously separably associated with a suitable indicia carrier.，下面是X-ray film identification means专利的具体信息内容。

权利要求

1. X-ray film identification means for use in association with a cassette for latently imposing identification indicia upon a film in the cassette simultaneously with the imposition on said film of a latent image of a subject being radiographed; said identification means comprising a relatively thin indicia strip of X-ray absorbent sheet material formed with removed areas thereof constituting identifying indicia, means for supporting said indicia strip at the front face of said cassette, a plurality of selectively useable imperforate attenuation strips of sheet material all of different degrees of X-ray absorbency, and means for supporting any selected one of said attenuation strips in fixed position in interfering alignment between said indicia strip and a source of radiographic X-ray radiation of sufficient strength and duration to pass through and radiograph said subject; said indicia strip being of X-ray absorbent material of such relatively low X-ray absorbency as to be overpenetrated by said radiation being directed upon the subject being radiographed, and said selected attenuation strip being of such X-ray absorbency as to reduce the radiographic radiation reaching the indicia strip to a condition in which it is insufficient to over-penetrate the indicia strip.

2. X-ray film identification means for use in association with a cassette for latently imposing identification indicia upon a film in the cassette simultaneously with the imposition on said film of a latent image of a subject being radiographed; said identification means comprising a plurality of imperforate attenuation strips of different degrees of X-ray absorbency, a frame, non-shiftably disposable at the front face of said cassette, a relatively thin indicia strip of X-ray absorbent sheet material formed with removed areas thereof constituting identifying indicia, means for supporting said indicia strip on said frame, and means for supporting any selected one of said attenuation strips in fixed position on said frame in interfering alignment between said indicia strip and a source of X-ray radiation of sufficient strength and duration to pass through and radiograph said subject; said indicia strip being of X-ray absorbent material of such relatively light X-ray absorbency as to be over-penetrated by said radiation, and the selected attenuation strip being of such X-ray absorbency as to reduce the radiation reaching the indicia strip to a condition in which it is insufficient to over-penetrate the indicia strip.

3. Identification means according to claim 2, said indicia strip comprising a sheet of X-ray absorbent material sandwiched between sheets of paper.

4. Identification means according to claim 2, said indicia strip having X-ray absorptiveness corresponding approximately to the X-ray absorptiveness of solid tin of a thickness of about 0.15 to 0.20 millimeter, and said selected attenuation strip comprising sheet material having X-ray absorptiveness corresponding approximately to the X-ray absorptiveness of a subject to be radiographed.

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