Hi Adam,

I've created a new version of mri_convert which should hangle multi-frame GE dicom data properly. You can get it from here:

ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_convert

Run it as you would ordinarily, but add -dicomread2 to the cmd line.

I want to stress that this is experimental and that you are practically alpha testing it. Do you have other data sets that you can test it on?

It should really be tested on several acquisitions collected with various orientations. The volumes should have fiducials to make sure that we are getting right right, but it might take me a while to drum up such data sets.

doug




Thomas, Adam (NIH/NIMH) [E] wrote:
Looks like the machine I was running it on before was still running a
dev version from February, but I just tried it again with the latest
stable version (see below) and got the same thing.

I've uploaded a tar file with all of the dicom files. It also includes a
script of how afni does the conversion and the nifti output from it.

Thanks,
-Adam

PS. I like your filedrop utility. Is it freeware or something you wrote
in house?


[adamt@master ~]$ mri_convert --all-info
mri_convert --all-info
ProgramName: mri_convert ProgramArguments: --all-info ProgramVersion:
$Name: stable3 $ TimeStamp: 06/07/06-17:12:35-GMT CVS: $Id:
mri_convert.c,v 1.121 2006/02/22 05:39:36 greve Exp $ User: adamt
Machine: master Platform: Linux PlatformVersion:
2.6.12-1.1387_FC4.rootsmp CompilerName: GCC CompilerVersion: 30400



-----Original Message-----
From: Doug Greve [mailto:greve@nmr.mgh.harvard.edu] 
Sent: Thursday, July 06, 2006 12:41 PM
To: Thomas, Adam (NIH/NIMH) [E]
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] mri_convert: dicom to nifti 4D

I'm not sure what's going on with this -- I don't have too much 
experience with GE functionals. Can you tar it up and put it somewhere I

can get or send it thru our file drop system? The file drop is at: 
https://www.nmr.mgh.harvard.edu/facility/filedrop/index.html.

Also, what version of mri_convert are you using? You can check with 
mri_convet --all-info

doug

Thomas, Adam (NIH/NIMH) [E] wrote:

  
I seem to be having some trouble converting a 4D time series from dicom
to nifti format using mri_convert. Rather than outputting 144 frames of
38 slices each, it creates a volume with a single frame of 5472 slices
(see below). Is there an argument I should be using to specify number
    
of
  
frames?

I think there was a post on this back in April
(http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg02656.ht
    
m
  
l), but I can't seem to find an answer in the archives.

Thanks,
-Adam


[adamt@master 004]$ mri_convert axialepi-00001.dcm test.nii
mri_convert axialepi-00001.dcm test.nii
reading from axialepi-00001.dcm...
5472 DICOM 3.0 files in list
Found 5472 DICOM Files
WARNING: NumberOfFrames 0 != Found Count of slices 5472.
reading DICOM image...
-------------------------------------------------
DICOM meta-header

file name
/misc/radium0/adamt/mirrorTracking/XX/2006-02-11-S2/XXXXXXXX/2006_02_11
    
-
  
15667/004/axialepi-00001.dcm
Date and time
       study date              20060211
       study time              170403
       series time             172558
       acquisition time        172558
Identification
       patient name            XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
       manufacturer            GE MEDICAL SYSTEMS
Dimensions
       number of rows          64
       number of columns       64
       number of frames        5472
       pixel width             3.28125
       pixel height            3.28125
       slice thickness         3.2
       field of view           210
       image number            1 (might be not reliable)
       transfer syntax UID     1.2.840.10008.1.2.1
Acquisition parameters
       echo time               30
       repetition time         2500
       inversion time          0
       echo number             1
       flip angle              1.5708
       bits allocated          16
Spatial information
       first image position    -103.359 -132.14 75.59
       last image position     -103.359 -132.14 -42.81
       image orientation       1 -0 0 -0 1 0
-------------------------------------------------

TR=2500.00, TE=30.00, TI=0.00, flip angle=90.00
i_ras = (-1, 0, 0)
j_ras = (0, -1, 0)
k_ras = (0, 0, -1)
writing to test.nii...
[adamt@master 004]$




---
Adam Thomas             adamt@nih.gov
Functional MRI Facility, NIMH/NIH/DHHS
10 Center Dr, Room B1D708A
Bethesda MD. 20892-1148
Phone:301-402-6351    Fax:  301-402-1370


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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
Phone Number: 617-724-2358 
Fax: 617-726-7422

In order to help us help you, please follow the steps in:
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