Multi Z-axis profile

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LAG
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Multi Z-axis profile

LAG
Hello, ImageJ'ers!
I have a large number of particles in my field of view, that I image as a function of time, thus creating a stack. The particles do not move in X Y, but their intensity is changing from slice to slice. I am detecting them (threshold, then analyze particles) on a Z-projection of all slices, and am adding all of them to the ROI manager. Now, coming back to the stack, I would like to have all of their intensities as a function of time. At the moment I am "Z-axis profile" for each one of them, one at a time, but this is very tedious (many hundreds of particles). The question is whether you are aware of some method to have the time profiles (Z-axis profile) of all the ROIs registered in the ROI manager?

Thank you very much! LG
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Re: Multi Z-axis profile

Krs5
Dear LG,

I am not aware of an option/plugin in ImageJ to make multiple profiles in this way but there is the option to do Multi Measure in the ROI Manager (More >> Multi Measure). If you select in the pop-op menu both 'Measure all slices' and 'One row per slice' you get a table with the data for each particle in a column.  Save this and you can open it in excel to make the profiles. Under Analyze > Set Measurements... you can select the parameter you want to analyse, most likely 'Integrated density'.

Best wishes

Kees

________________________________________
From: ImageJ Interest Group [[hidden email]] on behalf of LAG [[hidden email]]
Sent: 23 December 2014 18:40
To: [hidden email]
Subject: Multi Z-axis profile

Hello, ImageJ'ers!
I have a large number of particles in my field of view, that I image as a
function of time, thus creating a stack. The particles do not move in X Y,
but their intensity is changing from slice to slice. I am detecting them
(threshold, then analyze particles) on a Z-projection of all slices, and am
adding all of them to the ROI manager. Now, coming back to the stack, I
would like to have all of their intensities as a function of time. At the
moment I am "Z-axis profile" for each one of them, one at a time, but this
is very tedious (many hundreds of particles). The question is whether you
are aware of some method to have the time profiles (Z-axis profile) of all
the ROIs registered in the ROI manager?

Thank you very much! LG



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LAG
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Re: Multi Z-axis profile

LAG
Dear Kees,

Thank you very much for the tip! It is indeed what I was looking for! It allows me to get the intensity profiles of all detected particles!

Best regards, and a happy new year!

LG