[Oradlist] Multiple white spot on film

[E. Platin]

Hi Suchaya,

I do not think the film is causing your problem, I think it is your
intensifying screen.  I would check all of my 8x10 intensifying screens.
You can do this visually and also by making exposures using a mannequin of
sorts.  I suspect the screens are old and have seen better days.


Best regards,


E. Platin






On 5/14/09 10:25 PM, "dtspr at mahidol.ac.th" <dtspr at mahidol.ac.th> wrote:

> Dear Oradlisters,
> 
> Please help me find out what causes the multiple white spots on Kodak T-Mat
> G/RA film (8x10 in).
> The attached images are from a new opening box of Kodak T-Mat G/RA, expiration
> date 2010/04.
> This artifact happens again although we changed to other new box of film.
> One strange thing is that the white artifact does not occur on other films of
> the same box, as in attached file.
> To my experience, the mold causes diffused black artifact.
> However, this white artifact does not occur with panoramic film.
> 
> Best Regards,
> Suchaya Pornprasertsuk-Damrongsri
> Assistant Professor, Dept. of Radiology
> Faculty of Dentistry, Mahidol university
> 6 Yothi street, Phayathai
> Bangkok 10400, Thailand
> 
> 
> 
> 
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