comp.lang.idl-pvwave archive: archive » Re: Reading DICOM images

Home » Public Forums » archive » Re: Reading DICOM images

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Reading DICOM images [message #47098]

Wed, 25 January 2006 06:36

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

holgi0251@lycos.de writes:

> I am trying to process DICOM-images of human lung tissue from a Siemens
> Multidetector CT-scanner. The gray-levels should range from -1000 HU to
> something like +2000. When I read the image slices ("im =3D
> read_dicom(filename, image_index=3D1) the grey levels are compressed to
> the range 0 ... 255. The situation slightly improves, when I predefine
> the variable by "im =3D fltarr(512,512)". But I still don=B4t get negative
> graylevels.

Here is an article on how I convert CT values in DICOM files to
Hounsfield units:

http://www.dfanning.com/fileio_tips/hounsfield.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

Report message to a moderator

Previous Topic:	New IDL book for beginning programmers
Next Topic:	Re: IDL Quiz and Essay Contest

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 19:21:56 PDT 2025

Total time taken to generate the page: 0.00426 seconds