Insurance reimbursement of digital images

[Curtis SK Chen]

Is this the article you referred to? Dr. Farman directed me to it!

Authors
  Tsang A.  Sweet D.  Wood RE.
Title
  Potential for fraudulent use of digital radiography [see comments].
Comments
  Comment in: J Am Dent Assoc 1999 Nov;130(11):1566, 1568, Comment in: J Am
  Dent Assoc 1999 Nov;130(11):1568, Comment in: J Am Dent Assoc 1999
  Nov;130(11):1568-9, Comment in: J Am Dent Assoc 2000 Jan;131(1):18, 20,
  Comment in: J Am Dent Assoc 2000 Mar;131(3):290

Source
  Journal of the American
  Dental Association.  130(9):1325-9, 1999
  Sep.

Sincerely,

Curtis


----- Original Message -----
From: "Leif Kullman" <lkullman at KSU.EDU.SA>
To: <ORADLIST at listserv.ucla.edu>
Sent: Monday, February 12, 2001 5:11 PM
Subject: Re: Insurance reimbursement of digital images


> Yes, I agree this was a very simple case, that easily could be unveiled.
My friend
> made it as a joke more or less, just to give us an idea how easy it is to
> manipulate.
>
> But I still we need to be aware of these things. Some time ago I saw an
article
> where GP's were tested in manipulated radiographs and some of them had
some
> problem with some of the radiographs. Unfortunately I have forgotten the
name of
> the authors and the title. Perhaps someone else can remember?
>
> Best regards Leif Kullman
>
> PF. vd. Stelt wrote:
>
> > There are a few reasons why the example of the manipulated radiograph is
not
> > very convincing, and should easily be recognized as being tampered with.
To
> > mention just a few clues:
> >
> > 1. the outline of the rubber dam clamp is completely different from what
you
> > expect in a radiographic projection.
> > 2. the shape of the clamp is probably not what is should be.
> > 3. the center of the radiolucency shows "scratches', which are the
result of
> > the drawing and pasting of darker pixels.
> > 4. the contrast and density of the radiolucency is more than one would
expect,
> > taking the general texture of the surrounding bone into account.
> >
> > It took only a couple of minutes to manipulate the radiograph, but it
also
> > took little time to find the suspicious features.
> >
> > I assume, when digital will become more wide spread, the experience in
> > recognizing wrong images will also increase (as happened with
conventional
> > analog images as well).
> >
> > Paul van der Stelt
> > ==============================================================
> > Paul F. van der Stelt, DDS, PhD
> > professor Oral and Maxillofacial Radiology
> > dept. of Oral and Maxillofacial Radiology, ACTA
> > Louwesweg 1
> > 1066 EA Amsterdam
> > phone +31-20-5188262
> > fax +31-20-5188 480
> > email: p.vdstelt at acta.nl
> > ==============================================================
> >
> > - - - - - - - - - - - - - - Original Message - - - - - - - - - - - - - -
> > On Sat Feb 10 11:22:54 2001,
> > "Leif Kullman" <lkullman at KSU.EDU.SA> wrote:
> > >Hallo Curtis
> > >Unfortunately I cannot supply you with any information about how
insurance
> > >companies reimburse DDX, but I can understand that the authorities are
> > >worried.
> > >According to my opinion, it will be very easy to cheat in the future.
> > >I attach two images from a dental colleague in Sweden. He used a very
common
> > >software (I think it was PaintShop Pro) and changed the original
radiograph
> > >(original.jpg)to a manipulated version (fejk.jpg)with an ongoing endo
> > >treatment.
> > >It took him only a couple of minutes!
> > >
> > >Best regards Leif
> > >
> > >
> > >Curtis SK Chen wrote:
> > >
> > >> Dear colleagues,
> > >>
> > >> The National Health Insurance System here is finally looking into
> > >> reimbursement of digital dental x-ray images. The decision makers are
very
> > >> converned about the possibility of "modification" of digital images.
Please
> > >> kindly provide me with info on how your insurance company reimburse
DDX,
> > >and
> > >> how to prevent this possible fraud. Many thanks in advance!
> > >>
> > >> Sincerely,
> > >>
> > >> Curtis
> > >>
> > >> -------------------------------------------------
> > >> Curtis SK Chen DDS MSD PhD
> > >> Dentistry, NTU Hospital
> > >> No. 1, Chang-Te Street, Taipei, Taiwan
> > >> Tel: 886-2-23123456 ext 7696
> > >> Fax: 886-2-23831346
> > >> Email: cskchen at ccms.ntu.edu.tw
> > >> -------------------------------------------------
> > >
> > >--
> >
>---------------------------------------------------------------------------
--
> > >----------------------------------------------------
> > >
> > >Leif Kullman, DDS, PhD, Assoc. Professor
> > >Head, Division of Maxillofacial Radiology
> > >MDS Departm., College of Dentistry
> > >P.O. Box 60169, 115 45 Riyadh
> > >Kingdom of Saudi Arabia
> > >
> > >
> > >
> >
> > - - - - - - - - - - - - End of Original Message - - - - - - - - - - - -
> >
>
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> >
> >                         Name: felk8-edge.bmp
> >    felk8-edge.bmp       Type: Bitmap Image (image/bmp)
> >                     Encoding: base64
>
> --
> --------------------------------------------------------------------------
-------------------------------------------------------
>
> Leif Kullman, DDS, PhD, Assoc. Professor
> Head, Division of Maxillofacial Radiology
> MDS Departm., College of Dentistry
> P.O. Box 60169, 115 45 Riyadh
> Kingdom of Saudi Arabia
>