DICOM Better resolution

[karendianne]

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!!

--
Karen Dianne Orjuela Traslaviña M.D

[Vincenzo Della Mea-2]

you cannot improve the resolution of an image over the acquisition  
resolution. You might obtain an apparently better image, but there  
will not be more information than in the original one (typically, less).
Regards,
Vincezo

Il giorno 31/lug/09, alle ore 02:31, Karen Orjuela ha scritto:

> 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!!
>
> --
> Karen Dianne Orjuela Traslaviña M.D

* Vincenzo Della Mea
* Medical Informatics, Telemedicine and Ehealth Lab
* University of Udine, Italy
* http://www.dimi.uniud.it/dellamea/ - http://mitel.dimi.uniud.it/  -  http://www.eslide.net
* WHO Italian Collaborating Centre for the Family of International  
Classifications

[Graham Arden]

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

[Bruce Kendall]

I have a 3MP microscope camera that will solve your resolution issues for
$470. Let me know if you interested.


Bruce Kendall
XL Imaging, LLC
PH: 214-334-6488
Fax: [phone]
www.xlimaging.us
 
Representatives for 'The Imaging Source' Digital Imaging Cameras

-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of Karen
Orjuela
Sent: Thursday, July 30, 2009 7:32 PM
To: [hidden email]
Subject: DICOM Better resolution

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!!

--
Karen Dianne Orjuela Traslaviña M.D

[Graham Arden]

Bruce Kendall wrote:
> I have a 3MP microscope camera that will solve your resolution issues for
> $470. Let me know if you interested.
>
>
> Bruce Kendall
> XL Imaging, LLC
>  
Exactly how would a camera of any sort increase the resolution of any
existing DICOM image?  Karen didn't even mention microscopy images in
her original message and, although a DICOM Object definition for visible
light microscopy exists, as far as I'm aware DICOM isn't a standard
generally used in microscopy.  (I may be wrong, microscopy not being my
field)

This looks suspiciously like marketing to me!

Graham

[Vincenzo Della Mea-2]

Il giorno 31/lug/09, alle ore 15:58, Graham Arden ha scritto:

> Bruce Kendall wrote:
>> I have a 3MP microscope camera that will solve your resolution  
>> issues for
>> $470. Let me know if you interested.
>>
>> Bruce Kendall
>> XL Imaging, LLC
>>
> Exactly how would a camera of any sort increase the resolution of  
> any existing DICOM image?  Karen didn't even mention microscopy  
> images in her original message and, although a DICOM Object  
> definition for visible light microscopy exists, as far as I'm aware  
> DICOM isn't a standard generally used in microscopy.  (I may be  
> wrong, microscopy not being my field)
>
> This looks suspiciously like marketing to me!

I agree with your suspects, however I should tell since a couple of  
years a working group (WG26) has been established for adapting DICOM  
to Pathology images (slightly offtopic, but for some this will be  
useful info).

Regards,
Vincenzo