Text archives Help

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Hongyu, hi,

I have not replied to your earlier email and will try to early next week ---

anyway, I don't know about these specific files but in general .pts files contain the coordinates (in Cartesian R^3) of the nodes of a geometry and .fac files contain the node numbers (as per the row number in the corresponding pts file) of the nodes of the triangles for a triangulated surface mesh. These trios are ordered so that the RH rule gives the (outward pointing, as I recall) surface normal direction ...

hope this helps ..

Dana

Hongyu Sun wrote:

On 8/23/05, Erik Jorgensen <erikj@sci.utah.edu> wrote:

Hongyu,

Here is some info for the Utah Torso model. I have added it to the
dataset in the archive. Let me know if you need more info.

Thanks.

Erik Jorgensen
SCI Media
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Description:

High resolution geometry of the Utah Torso model. The meshes are
tetrahedral volumes, with conductivity tensors stored with the elements.
There are five different conductivity values throughout the volume. The
surfaces are TriSurfs and correspond to the boundaries of the distinct
conductivity regions. For the meshes labeled {01,02,05,10,25,50}, those
numbers correspond to the percent of nodes from the full mesh that are
in those lower-resolution meshes.

Conductivities:
  0 / air          / 0.0
  1 / skin         / 0.00005
  2 / fat          / 0.0000375
  3 / muscle       / 0.000125
  4 / lung         / 0.000054
  5 / heartmuscle  / 0.000238
  6 / heartchamber / 0.00068
  7 / fatpad       / 0.00005
  8 / vessel       / 0.00068
  9 / rib          / 0.00000625
Number of nodes:  168930 (low-res =  8278)
Number of cells: 1082723 (low-res = 51419)
Bounding box: [-273.95, -124.18, 15] -- [269.41, 115.44, 575]

Hongyu Sun wrote:

Hi, where I can find the utah torso text documentation?


http://software.sci.utah.edu/cgi-bin/NCRRdatasets.pl?id=utahtorso-text


Thanks !


HS

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Hi, Erik:

Thank you. One thing I got a bit confused is that "five different
conductivity values", while the listed conductivity values has about
10 values.

Also I found the text format of the data is ready. But I am not quite
sure about the format of the .fac, .pts files for tissues? What do
they mean? For example, utahtorso-fat.ts.pts and utahtorso-fat.ts.fac?
Since all the meshes' geometry and conductivity are given, what is the
use of the tissue information?

Many thanks,

HS

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• [SCIRUN-USERS] utah torso document, Hongyu Sun, 08/21/2005
  • Re: [SCIRUN-USERS] utah torso document, Erik Jorgensen, 08/23/2005
    • Re: [SCIRUN-USERS] utah torso document, Hongyu Sun, 08/25/2005
      • Re: [SCIRUN-USERS] utah torso document, Dana Brooks, 08/25/2005

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