Hello,
Could you please confirm with your Xenon program vendor, how their
program colorizes the JPEG output?
I'm just wondering if your detector collects separate channels of data
and then combines them into a colored image, or if the color is only
added in for visualization purposes (and thus the color contains no
real information).
HTH,
Pariksheet
On Mon, Dec 22, 2008 at 5:34 AM, Matthew Crocker
<
[hidden email]> wrote:
> Dear All,
>
> I'm totally new to imagej and need some help. I am trying to analyse some
> colour scale brain blood flow maps as generated by a xenon enhanced CT
> technique. The output from the Xenon program is as JPEGs with a colour scale
> from 0 to 160 ml/100mg/min. But defining an ROI in imagej results in
> incorrect information being generated as the colour scale is being read as a
> grayscale which is then nonlinear. Does anyone know of a way of
> recalibrating the scale, I can define the scale as an ROI next to the blood
> flow map but then would want to use that ROI as the new colour scale. I have
> tried splitting the colour image into separate red, green and blue
> grayscale images and adding them but it didn't work.
>
> Any help fantastically appreciated
>
> Thanks all
>
> Matthew
>
> --
> Matthew Crocker
> McKissock Lecturer in Neurosurgery
>
> Academic Neurosurgery Unit
> St George's University of London
> Cranmer Terrace
> London SW17 0QT
>
> 0208 725 5138
> 0777 564 5441
>
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