- Architosh Staff ([email protected])
- 4 Sep 2001
reader Q: More help on Medical 3D on Mac
Architosh received yet another request on assistance for medical
3D imaging on the Macintosh platform, an area we profess to have
very little knowledge of. In our first
story a fellow Mac user wrote in with a suggestion on an application.
We thank such readers for helping other Mac users stay on the platform.
Hopefully someone can help Dr. Lars Frich, MD who recently wrote
saw you recently used your experience in 3D to help a doctor who
uses Mac for scientific work (Mac3D
Science Q: Mac medical scientist needs your 3D help!). I hope
you will pardon me for addressing you directly, but I have a similar,
if less complex problem. The following was posted in the Community
today. Hopefully this is an easy one for you..
Dr Lars Frich's Request
have no experience in the world of 3D modeling.
an ongoing medical research project I would like to be able to
calculate an area based on a circumference.
more details: Having made a lesion in tissue we would like to
slice the tissue in slices with predefined thickness, take a photo
of the surface of each the slices and trace the circumference
of the lesion / the border between normal and abnormal tissue.
We would further like to be able to calculate the area within
the part of the slice that is abnormal. Afterwards we would like
to be able to build a 3D model of the abnormal tissue based on
the area of the separate slices.
simpler version of the same problem - how do you calculate the
area of the yellow part of a sliced boiled egg, given that you
know the scale of the image that you process? And how do you build
a 3D model of the yellow part of the boiled egg from the slices
of the egg and calculate the volume?
possible, please consider that we would not like to buy a full
(expensive) software package to make these quite simple operations
if a simpler software package will do the job.
This problem sounds completely within the capabilities of a solids
modeling program used for industrial design purposes, wherein area
and volumes of negative cavities (or what's left over subtractions,
etc.) are often determined for various purposes.
Since we assume the lesions and tissue areas are not of simple
geometric form a program would need to be able to trace and form
shapes with bezier curves. The control points of which might greatly
assist the doctors in controlling the precise shape of the abnormal
tissue. The problem sounds pretty exciting when you think about
We think FormZ from Autodessys
Inc., or Cobalt
from Ashlar Inc, with its advanced associative Class-A NURBS
surface modeling may do the trick. And again solidThinking by GESTEL,
Maya by Alias/Wavefront and others maybe work as well. One last
app that may be suitable is Neoform
by Formation Design Systems.
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