| measurements |
Sep 27, 2012 03:37 PM
by george
by george
i use radiant dicom viewer for re-examine cardiac ultrasound studies.
I am a new user...
When i click to measure i.e. a distance, the result is in px (what does it mean?). How can i measure in cm instead?
thank you
I am a new user...
When i click to measure i.e. a distance, the result is in px (what does it mean?). How can i measure in cm instead?
thank you
Sep 27, 2012 04:47 PM
by
by
Dear George,
When you open the DICOM file without pixel spacing data (which is the case with your ultrasound study) you will only get measurements in pixels.
Currently there is no way to manually calibrate such image.
The workaround:
1) measure the ruler included in your US image
2) divide the ruler length (in centimeters) by the value of measurement (in pixels)
3) measure your object of interest and multiply the value in pixels by the ratio you got in the second step
Greetings,
Maciej
When you open the DICOM file without pixel spacing data (which is the case with your ultrasound study) you will only get measurements in pixels.
Currently there is no way to manually calibrate such image.
The workaround:
1) measure the ruler included in your US image
2) divide the ruler length (in centimeters) by the value of measurement (in pixels)
3) measure your object of interest and multiply the value in pixels by the ratio you got in the second step
Greetings,
Maciej
Sep 28, 2012 07:33 AM
by Guest
by Guest
ok, thanks Maciej.
it seems it works ok
Regards
it seems it works ok
Regards
Jul 7, 2014 12:04 PM
by Diogo Moutinho
by Diogo Moutinho
I'm using Radiant (CD\DVD VERSION 0.40.2.1523).
Some images, from some manufacturers, use a different tag for pixel spacing. This version uses: 0028,0030 pixel spacing.
We have a client that is trying to measure images that are using a different tag for pixel spacing.(0018,1164) ImagerPixelSpacing.
Is there support for this? On this version?
Thanks.
Some images, from some manufacturers, use a different tag for pixel spacing. This version uses: 0028,0030 pixel spacing.
We have a client that is trying to measure images that are using a different tag for pixel spacing.(0018,1164) ImagerPixelSpacing.
Is there support for this? On this version?
Thanks.
Jul 7, 2014 06:36 PM
by
by
Dear Diogo,
Support for measurements with imager pixel spacing attribute was introduced in version 1.9.4.7257
You can check the complete version history here: http://www.radiantviewer.com/versionhistory.php
And here is the manual page about length measurements: http://www.radiantviewer.com/dicom-viewer-manual/length.htm
Kind regards,
Maciej
Support for measurements with imager pixel spacing attribute was introduced in version 1.9.4.7257
You can check the complete version history here: http://www.radiantviewer.com/versionhistory.php
And here is the manual page about length measurements: http://www.radiantviewer.com/dicom-viewer-manual/length.htm
Kind regards,
Maciej
Jul 24, 2014 05:48 PM
by Rami
by Rami
I am trying to measure surface area of an irregular object on MRI images, is this possible. The ellipse tool is not appropriate and the pencil tool doesn't give area.
Thanks,
Rami
Thanks,
Rami
Aug 12, 2014 07:12 AM
by Luke
by Luke
Hi,
I'd like to add special annotation and measurement tools, for example, for chiropractic imaging. Is it possible to develop and add plugins to the RadiAAnt image viewer?
I'd like to add special annotation and measurement tools, for example, for chiropractic imaging. Is it possible to develop and add plugins to the RadiAAnt image viewer?
Aug 13, 2014 08:49 AM
by
by
@Rami
Currently only measurements from the ellipse area are possible.
@Luke
I'm afraid that the plugin architecture in RadiAnt won't be available anytime soon...
Currently only measurements from the ellipse area are possible.
@Luke
I'm afraid that the plugin architecture in RadiAnt won't be available anytime soon...
Sep 19, 2015 06:15 PM
by Gustavo
by Gustavo
Hi,
There is possible to measure area in Dicom Viewer?
There is possible to measure area in Dicom Viewer?
Sep 19, 2015 06:23 PM
by Gustavo
by Gustavo
Sorry, the answer is above...
There is another software that do this?
There is another software that do this?
Sep 21, 2015 06:18 PM
by Guest
by Guest
You could use Osirix, but it's for Mac computers only...
Sep 30, 2015 05:20 AM
by umesh
by umesh
there is a ellipse tool what does it measure acctually as i found more value on opaque part and less value on lucent part
Sep 30, 2015 02:40 PM
by
by
It depends on the modality of the image that you measure. For CT this would be Hounsfield units. For CR this could be the optical density. PET images usually have Becquerels/milliliter or counts.
Oct 1, 2015 03:34 AM
by umesh
by umesh
what about the dx is it possible to measure bone density in hounsfield unit for DX file with ellipse tool
Oct 2, 2015 10:08 AM
by
by
I don't think so. Hounsfield units are specific for the CT modality.
Aug 14, 2018 08:53 PM
by sam
by sam
hi
i was just wondering how to find out the vauxhall size/ how much each pixel is in each image
i was just wondering how to find out the vauxhall size/ how much each pixel is in each image
Aug 21, 2018 08:31 PM
by
by
To find out the size of the pixel in your image, press Ctrl+Alt+T to show the DICOM tags window and find the pixel spacing element. It shows the dimensions of a pixel in milimeters, e.g.:
(0028,0030) DS 0.388672\0.388672 # 2, 18 Pixel Spacing
(0028,0030) DS 0.388672\0.388672 # 2, 18 Pixel Spacing