Re: Intensity calculations

Posted by Michael Doube-4 on Jun 24, 2014; 3:49pm
URL: http://imagej.273.s1.nabble.com/Intensity-calculations-tp5008357p5008401.html

Hi Framezani,

> my project is about determining the bone mineral density of the lumbar spine
> , to do that I took x-ray images

With what kind of source? Are they plain radiographs or X-ray microtomography reconstructions?

> and now I need to analyse them with imageJ
> to extract to BMD at the end.

You will need to make a calibration curve, using phantoms of known BMD-equivalence, which will result in a function that relates pixel values to BMD values. Use ImageJ's built in calibration function to do that, once you have the image of the phantoms. Some of the commercial XMT manufacturers have a streamlined way to do this, so talk to your local expert / sales rep / service engineer.

Michael

<http://www.rvc.ac.uk>

This message, together with any attachments, is intended for the stated addressee(s) only and may contain privileged or confidential information. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Royal Veterinary College.

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html