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Thread: X-ray Film example and comparison.

  1. #381
    Cor's Avatar
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    Re: X-ray Film example and comparison.

    Quote Originally Posted by tgtaylor View Post
    From what I have been able to determine, practically all x-ray film manufactured in the past 30 years is on a polyester base and not acetate.

    Here is a quote from the reference that I ran across yesterday regarding fading - actually fogging:

    "X-ray film will fog slowly with time, the extent depending markedly on how well it is stored. This fogging, along with the optical density of the film base, will generate a low density in the toe section of the Characteristic Curve." See http://www.e-radiography.net/radtech/f/film.htm.

    Finally, here is a link to the Kodak Data sheet that I found: http://www.taldent.ee/est/med/filmid/mxg.pdf

    Thomas
    It's true that Xray film builds up B+F slowly before exposure (seen it happen at the lab when we used a lot of it for autoradiography), but after processing there is no reason that the negative is as stable as normally processed negatives..maybe the grain size is smaller than standard film..

    I guess fading after processing is due to sloppy processing (running the developing machine too long with exhausted fixer, washing too short etc..)


    best,

    Cor

  2. #382

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    Re: X-ray Film example and comparison.

    That word they are using on the film section"
    "supercoat"
    I don't think it means what they think it means.
    How about overcoat or last, soft, coat

  3. #383
    よろしくお願いします! Andrew O'Neill's Avatar
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    Re: X-ray Film example and comparison.

    I'm sure I can get plenty of contrast and Density Range one side of X-Ray film for carbon printing by developing in 510-Pyro.
    That's good to know. I'll have to try some single sided xray film. Thanks Jay.

    andrew

  4. #384
    tgtaylor's Avatar
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    Re: X-ray Film example and comparison.

    My doorbell just rang and UPS forked them over:


  5. #385

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    Re: X-ray Film example and comparison.

    Joe, I think the 24x24 is cm not inches. I think you have three options:
    1. buy 14x36 and cut down to 12x20; leaves a piece of 11x14 as well
    2. use two sheets of 12x10 side by side; yes, use clear tape if needed to hold into place
    3. cut 14x17 down to 12x17 and tape down one end to center in your 12x20 holder

    Quote Originally Posted by Joe Forks View Post
    I wish xray were available in 12x20, but it is not, that I am aware of.
    It is available in 24x24 and 10x12 though, which gives me two options.

    1) splice two sheets of 10x12 together - emulsion on both sides though, how do I keep them in place? A small piece of tape or two on the backside at the splice?

    2) cut down 24x24 - I've heard it over and over this stuff scratches easily.

    Are either of these viable options if I want to play with cheap film? Or am I SOL? I mean for the chump change they are asking I might play anyway, just thought I'd get some feedback first before I place an order.

  6. #386
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    Re: X-ray Film example and comparison.

    [/QUOTE]

    FWIW, the above Kodak ClinicSelect Green X-ray film was until recently named KODAK Medical X-ray Film / 5156 / MXG and the data sheet that I linked to in my earlier post is for this film. Incidentally the films current manufacturer, Carestream Health HQ'd in Rochester, was formerly Eastman Kodak Company's Health Group.

    Thomas

  7. #387

    Re: X-ray Film example and comparison.

    Quote Originally Posted by tgtaylor View Post
    FWIW, the above Kodak ClinicSelect Green X-ray film was until recently named KODAK Medical X-ray Film / 5156 / MXG and the data sheet that I linked to in my earlier post is for this film. Incidentally the films current manufacturer, Carestream Health HQ'd in Rochester, was formerly Eastman Kodak Company's Health Group.

    Thomas[/QUOTE]

    And this is single sided coating or double sided coating? I looked at the website link and either I'm a dummy or it didn't say.

    MB

  8. #388

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    Re: X-ray Film example and comparison.

    I have a box of the Kodak High Speed Green X-ray film in 8X10. I believe it's the same stuff, except the emulsion is faster. Mine is double sided. Mamography film is single sided, but comes in weird sizes. I think most 8X10 medical X-ray films are double sided.

  9. #389
    Scott --'s Avatar
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    Re: X-ray Film example and comparison.

    Question: How finicky are holders for nominal film sizes? Mammo film is available in 24x30cm, but not 10x12". How close is close enough?
    It's much better to be a spectacular failure than an apologetic one...

    http://scottperryphoto.wordpress.com/
    @ScottPerryPhoto

  10. #390

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    Re: X-ray Film example and comparison.

    Gotta do your own homework on that one, probly. Close enough for hand grenades surely.
    But 10x12in is 25.4x30.48 cm so it doesn't sound all that close to us former engineers.
    Now if there is about that much extra space in a 10x12 holder, you might just have a serendipity, by not having to sliiiiiide the film in, but tape it at the edges under the safelight. no wait, set it under the thingy on one side and get more tape room , less tape on the other. [ that's my fantasy plan for a 14x36 inch holder -did I say fantasy?]

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