Re: Problems in reading Hounsfield units from a DICOM image (Fiji)

Posted by Salim Kanoun on Feb 26, 2017; 5:12pm
URL: http://imagej.273.s1.nabble.com/Problems-in-reading-Hounsfield-units-from-a-DICOM-image-Fiji-tp5018195p5018200.html

Dear Shreya,

Your dicom header is almost empty.
For example there is no "modality" tag, that should say that the
modality is CT. Usually we also find a lot of other informations like
the manifacturer name, the XRay kV used ect ect...

I don't think the problem is in Fiji.
Fiji is showing you all you can get from the file and obviously the
unit don't seems to be UH.

I think you should see the manufacturer documentation of your CT device.

I think there are two possibilities :
1) The unit are not UH and your CT might use another scale, in that
case probably that your manufacturer could give you a conversion rule
to get UH.
2) The original might been transformed by another software and some
tag have been deleted or changed leading to a wrong scale. Are you
sure that this file is the original output file from your CT device ?


Best regards,

Salim


2017-02-26 12:49 UTC+01:00, Shreyakanakiya <[hidden email]>:

> Hi Salim,
>
> I have attached a sample of the DICOM file here.
> Thanks!
>
> -Shreya
>
> Image.dcm <http://imagej.1557.x6.nabble.com/file/n5018198/Image.dcm>
>
>
>
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