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Summary of CT scans to 3D models

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  • Summary of CT scans to 3D models

    Dear Biomecher's
    Thanks to everyone who took the time to reply to my question:

    For the purpose of improving our patient care, we investigating methods of
    making 3D models of long bones from our patients CT scans.

    I have looked at the SurfDriver software, but find the method of
    highlighting the areas of interest, to be slow and error prone
    .
    Hence I was wondering if anyone could suggest or recommend:

    1)A program that can 'atomatically' process CT scans.

    2) An alternative to the surfdriver.

    The informative and helpful replys are listed below:
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    I am sure the software you are looking for is called Voxar. I am
    testing it at the moment and it looks promising. You need to get in touch
    with Ms Alison Sinclair at 44-131-4724792 (Edinburgh, Scotland) or
    visit www.voxar.com.

    good luck.
    Yours sincerely,

    Dr Rami J Abboud, BEng, MSc, PhD
    e-mail:rjabboud@its.dundee.ac.uk
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    --------------------------------------------------
    You may want to try Fraunhofer. It is a non-for-profit organisation that
    has
    lots of knowledge in this area.

    The contact that I have is Paul Wehner at pwehner @ fraunhofer.bu.edu .

    He is located at Boston University. I do know that Fraunhofer has may labs
    around the world. Paul may beable to direct you to one closer to you.

    Regards,

    Patti Turnbull
    Email patti.turnbull@reebok.com
    ----------------------------------------------------------------------------
    ------------------------------------------------
    You may wish to contact Dr. Joyce Keyak (keyak@ortho.ucicom.uci.edu),
    who has had an algorithm in the literature for automated finite
    element model generation from quantitative CT scans since about
    1990. How useful it is might depend on exactly what you plan on
    doing with these models.
    Cliff Les, DVM, PhD
    Email cliff@equus.ucdavis.edu
    There is a program called Med-link that runs in Ideas that takes CT
    data and creates 3-d models from it. You also do stress, thermo, etc..
    analyses also. http://www.primenet.com/~dcr_inc/
    Brian G.
    Email Engeniero@aol.com
    ----------------------------------------------------------------------------
    -----------------------------------------------
    We are actively engaged in this issue. I agree
    with you that you must calibrate your segmentation
    and isosurface building routines in order to
    produce accurate models via STL. We are actively
    engaged in this work. Did you attend the recent
    meeting in Erlangen:

    http://www.imp.uni-erlangen.de/rpt97.htm

    I would be happy to discuss this further.

    Sincerely,

    |David Dean, Ph.D.
    E-mail: dxd35@po.cwru.edu |
    ----------------------------------------------------------------------------
    ------------------------------------------------
    An alternative to surfdriver is http://www.materialise.com
    Richard
    email Richard.BASTIEN@DECATHLON.FR
    ----------------------------------------------------------------------------
    -------------------------------------------------
    I can strongly recommend you the software of Materialise, a company here in
    Leuven (Belgium) that is specialised in software for the processing of
    medical images (CT, MRI). They have recently developped a software
    programme called MedCAD, that presents a direct link between medical images
    and CAD. With this programme you can easily convert anatomical structures
    (like e.g. long bones) to a surface description of the outline of the
    anatomical structure. You can read in medical images that comes from
    almost any kind of scanner (Siemens, General Electric...). MedCAD then
    works as follows : first you have to apply a certain grey value threshold
    to segment your images. MedCAD then automatically calculates the contours
    that outline your segmentation object for each images slice. With these
    contour data a spline surface is automatically calculated. MedCAD exports
    this surface data in an IGES format, so you can import the surface in a CAD
    programme. I have experimented with the programme myself and I must say
    that the results are really great. You can get a high accuracy to
    approximate even very thiny irregularities of the anatomical structure. A
    colleague of mine has used MedCAD for the construction of a 3D surface
    model of a CT-scanned tibia and she was able to reconstruct the geometry
    very accurately with only one spline surface. I use MedCAD for the
    reconstruction of 3D models of the upper and lower jaw from CT. For these
    complex geometries I end up with a number of splines which I can unite in
    a CAD programme.
    If you want additional information you can visit Materialise's website at
    www.materialise.be. I don't know whether you can get a demo version for
    evaluation purposes nor what the prices are for the MedCAD software.

    With friendly greatings,

    Hans Van Oosterwyck
    e-mail: hans.vanoosterwyck@mech.kuleuven.ac.be
    ----------------------------------------------------------------------------
    --------------------------------------------------
    a few weeks ago, a summary concerning 3D analysis software has been
    posted. Perhaps this might help you.

    I am working on the modelling of lower human extremity, so I have to
    build the model (from the visible human data set), including bones,
    muscles and ligaments. I have ordered a licence for the SURFDriver
    software, because the demo version seemed to me quit good. Perhaps you
    can tell me more about the experience you have made with this software.
    If you get further replies, perhaps you can send them to me, too.

    Regards

    Martin
    email pohl@pollux.medizin.uni-ulm.de
    ----------------------------------------------------------------------------
    --------------------------------------------------

    Thanks to everyone.

    Julie
    --------------------------------------------------------------------------
    Julie Matthews. M.Sc Bioengineer
    The Institute for Applied Biotechnology
    Medicinaregatan 8B
    413 46 Göteborg, Sweden
    Phone 46 (0)31-416337 or 411241
    Fax 46 (0)31-414560
    email Bioteknologen@swipnet.se

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