Posted by
Herbie on
Apr 08, 2019; 10:06am
URL: http://imagej.273.s1.nabble.com/Negative-values-tp5022009p5022013.html
Your images are in DICOM-format and have been converted to 32bit (ImageJ
can't display negative integers) in order to display them according to
the DICOM metadata. I guess the images are CT-scans in Hounsfield units.
See: <
https://en.wikipedia.org/wiki/Hounsfield_scale>
The "Display range: -654 - 1846" appears strange because Hounsfield
units start at about -1000 which stands for air.
I strongly recommend to consult the person who is responsible for the
image acquisition.
Regards
Herbie
:::::::::::::::::::::::::::::::::::::
Am 08.04.19 um 11:52 schrieb sergi64:
> Images are on 16-bits. Archives: ".dcm"
> I am Using FIJI 1.52n
>
> And it is a requirement that the images do not change so I do not know if
> passing them to 32 bits would be in breach of that rule.
>
>
> Info on "show info":
>
> Title: XXXX.dcm
> Width: 200.2000 mm (1001)
> Height: 200.2000 mm (1001)
> Size: 1.9MB
> Resolution: 5 pixels per mm
> Pixel size: 0.2x0.2 mm^2
> ID: -4
> Bits per pixel: 16 (unsigned)
> Display range: -654 - 1846
> No threshold
> Magnification: 0.75
> ScaleToFit: false
>
> Calibration function: y = a+bx
> a: -1000.000000
> b: 1.000000
> Unit: "Gray Value"
> Path: C:/xxx/xxxx/xxxxxxxxxx.dcm
> Screen location: 2069,156 (1920x1080)
> No overlay
>
>
>
>
> --
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http://imagej.1557.x6.nabble.com/>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>
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