Digitising intraoral radiographs

[Timo Luostarinen]

Re: Digitising intraoral radiographsAnd a good feature with Epson ist that
you can save scanning parameters so it is possible to scan all images you
want with same settings. If the optical densities are equal on film, the
pixel values will be equal too.

Timo Luostarinen
  -----Original Message-----
  From: Oral Radiology Discussion Group
[mailto:ORADLIST at listserv.ucla.edu]On Behalf Of Stuart C. White
  Sent: 27. syyskuuta 2001 18:37
  To: ORADLIST at listserv.ucla.edu
  Subject: Re: Digitising intraoral radiographs


  Keith,


  We use an Epson Expression 1600 flatbed scanner at 600 dpi and are quite
pleased with the results. It is useful to use their software Highlight and
Shadow tools to get a broad range of pixel intensities over the region of
interest on the image.


  Stu






    Can anyone advise on what they think is the best (in terms of image
quality)
    method of digitising conventional intraoral radiographs? A colleague of
mine
    is doing some subtraction studies using intraoral film-based images
    (conventional 3 x 4cm films)  and is getting what he says is 'too much
    noise' on the digitised images.
    He is currently using a 'Minolta Dimage Scan Dual'. He also said that he
has
    seen some images scanned with the  DSR-EMS Scanner which are 'usable but
not
    brilliant'.

    Can anyone advise on what they think is best? (he works with
    Colgate-Palmolive so he can afford the more expensive options!)


    Dr. Keith Horner,
    Senior Lecturer in Dental and Maxillofacial Radiology,
    University of Manchester, UK
    Tel: +44 (0)161 275 6690
    Fax: +44 (0)161 275 6840
    e-mail: keith.horner at man.ac.uk


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