Re: convert MRI to CT by changing dicom header
Thank you guys. We would like to use MRI geometry rather than CT's for the treatment purpose, so we try to modify the MRI dicom headers (to make it CT header-alike) instead of mapping the pixels from MR to CT.
Dose accuracy based on MRI will be an issue, but not a major concern for the time being. Thanks.
From: Jothy <jothybasu-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Scott Johnson <Scott.Johnson-0WFb6YI7bt9BDgjK7y7TUQ@public.gmane.org>
Cc: Bryant Chanowitz <bchanowitz <at> yahoo.com>; "insight-users-RyaoCGfWeh4@public.gmane.org" <insight-users-RyaoCGfWeh4@public.gmane.org>
Sent: Wednesday, June 27, 2012 3:59 AM
Subject: Re: [Insight-users] convert MRI to CT by changing dicom header
One way to tackle this is to assign HU of water or set in homogeneity correction off. Of course you need to compromise the accuracy!
Sent from my Phone
I’m sure that you can take the image pixels from an MR image and pack it into a CT image, but it would be an extremely bad idea.
The planning system is going to believe that those pixels represent HU values and they don’t. The computed dose will have no bearing on reality.
We would like to import MRI images for radiation treatment planning but the planning system only takes CT images. Is there a way to fool the system by changing MRI dicom headers into CT headers? Any suggestions would be highly appreciated.
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