Kari,
The format of files matching the following patterns are commonly:*.dcm - DICOM
I.* - Signa5 (ADW)
*.img - Volume, Float, Analyze 7.5, or Analyze 7.5 SPM
*.bxh - BXH
The formats store the image data and other information in different ways. DICOM and Signa5 store one slice in each file while Volume, Float, and Analyze7.5 store one 3D volume in each file. The BXH format supports data stored in a variety ways. All of these formats can be read by readmr.
The old system of retrieving data from the ADW used the Signa5 format. Someone must have converted your images into an *.img format already. The new system transfers the data as DICOM files (and also creates a BXH header for reading the data). You can convert these to Volume format by typing the following in MATLAB
anat = readmr;
In the GUI, choose one of the *.dcm files from the image series you want to convert and choose the "DICOM_Volume" format from the File Type drop down menu. Then type: writemr('T:\BIAC\Example.01\Data\Anat\20030101_12345\series002\anat.img',anat,'Volume');where 'T:\BIAC\Example.01\Data\Anat\20030101_12345\series002\anat.img is the name and location of your ouput image.
You can also use the new BXH format tools that avoid many of the issues with image format compatibility. See http://www.biac.duke.edu/research/bxh/ and http://www.biac.duke.edu/forums/topic.asp?TOPIC_ID=122 for more information. Using the BXH tools you would type the following in MATLAB:
anat = readmr;
In the GUI, choose one of the *.bxh file for the image series you want to convert. Then type: writemr(anat,'T:\BIAC\Example.01\Data\Anat\20030101_12345\series002\anat.img','Volume');
where 'T:\BIAC\Example.01\Data\Anat\20030101_12345\series002\anat.img is the name and location of your ouput image.
Enjoy,
Chuck
*.dcm vs *.img files
Posted - Aug 14 2003 : 4:30:05 PM
