Re: Moment of Inertia of bone cross-sections

Posted by Girish Ramaswamy on Apr 25, 2008; 7:23pm
URL: http://imagej.273.s1.nabble.com/Moment-of-Inertia-of-bone-cross-sections-tp3696426p3696430.html

     Hey Debby,

                I downloaded ImageJ recently from the website and I think it
is 1.39u. How do you say that your values are not exact? What do
you validate your MOI values against?

               Further, I am measuring tibiae which do not have a uniform
cross-section. But please do send me the zip file. I'll try running that.

          Thanks,
           Girish


On 4/25/08, Debra K Schneider <[hidden email]> wrote:

>
> Hi Girish Ramaswamy
> We have obtain a wonderful macro from Robert Day from the Royal Perth
> Hospital to do just the measurements you want.  The only problem is that you
> must use an older version of ImageJ. I use version 1.35q.  If you use
> anything newer, I don't get the same calculated values especially in bone
> area. Similar but not exact values for MOI and "C"
> If you are interested I can send you the zip file from Dr Day.
> Debby Schneider
>
>
> ----- Original Message -----
> From: Girish Ramaswamy <[hidden email]>
> Date: Friday, April 25, 2008 12:38 pm
> Subject: Moment of Inertia of bone cross-sections
> To: [hidden email]
>
>
> > Hello ImageJ users,
> >
> >          I am trying to use ImageJ to calculate the geometric
> > properties
> >  specifically the moments of inertia and radii of bone cross-sections
> > about
> >  the X and Y axes.
> >
> >          The "Moment_Calculator.class" plugin doesnt seem to work when
> > I
> >  run. If anyone has used ImageJ for this purpose, I would appreciate
> > any
> >  thoghts on this. Is there any other macro that would best fit this
> >  purpose?
> >
> >          I have 8-bit grey scale images obtained from micro-CT of the
> >
> >  bones.
> >
> >    Thanks.
> >
>