Re: DICOM Better resolution

Posted by Graham Arden on Jul 31, 2009; 10:21am
URL: http://imagej.273.s1.nabble.com/DICOM-Better-resolution-tp3691554p3691558.html

Karen Orjuela wrote:
> Hello everyone !!
> I'm trying to use imagej and improve the resolution from my DICOM
> images, I need to use the best quality and resolution to do
> measurements but I can't do it. does anybody knows the best way to get
> better results?
>
> Thank you!!
>  
As Vincenzo pointed out you cant improve the actual resolution of your
DICOM images.

What you may have noticed is that often images viewed in ImageJ appear
to be poorer resolution than the same images viewed on a workstation,
but in reality they aren't.

Most processing and reporting workstations seem to apply a certain
amount of interpolation in order to upscale images to a larger matrix
size.  This seems particularly true for nuclear medicine images where
the data may be aquired as 128x128 or 64x64 pixels in some cases (eg
SPECT data).  The interpolation doesn't improve the resolution and  
measurements taken from the original data in ImageJ will still be as
accurate (if not more so!)

Graham