eliminating nuclei

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eliminating nuclei

yardplanter

Hi all,

I need to determine the percent of new bone matrix in association with DBM.  I can come close by masking all else but ( all the) bone and then, because new bone has nuclei and DBM does not, I can count nuclei - at least theoretically.  This almost works but there are too many other similar specs ( H&E ) .  However, those specs are usually separated by 100s of microns or are stringy, while new bone nuclei are typically within 20-50 micron of each other.  The strings can be filtered using Particle analysis.

So, the real questions :

Is there an algorithm / macro that can select items ( nuclei) within a certain distance of each other ?

Once this is done, is there a way to select and add a specific area around each nuclei  ? e.g. add touching areas within a 50 micron radius of the nuclei.  This would give a good approximation of new bone.  "excess" area outside the bone could be masked using the original image.

Regards,
PB