[Insight-users] DWI images and GDCMSeriesFileNames

Tue Jun 5 14:29:07 EDT 2012

Hi Ale,

this is a strange case. I don't see a tag that allows differentiating 
b-images from ADC maps correctly. However, even if it is not the best 
solution, I would distinguish the files using windowing parameters. A window 
width (0028,1051) of about 4000 suggests that the second file is an ADC map. 
Can you tell us, who the vendor of your scanner is? Or where are these DICOM 
files from?

Best,
Robert

-----Ursprüngliche Nachricht----- 
From: Ale
Sent: Tuesday, June 05, 2012 4:29 PM
To: Insight User
Subject: Re: [Insight-users] DWI images and GDCMSeriesFileNames

Since I didn't know how to, I tried a simply diff over two identical files 
(or, at least, I suppose they are because they share the same 
ImagePositionPatient value)...

13c13
< (0008,0018) UI [1.2.840.113619.2.244.3596.13684772.20573.1279091044.372] # 
56, 1 SOPInstanceUID
---
> (0008,0018) UI [1.2.840.113619.2.244.3596.13684772.20573.1279091044.396] # 
> 56, 1 SOPInstanceUID
206c206
< (0020,0013) IS [1]                                      #   2, 1 
InstanceNumber
---
> (0020,0013) IS [25]                                     #   2, 1 
> InstanceNumber
282,284c282,284
< (0028,0107) xs 925                                      #   2, 1 
LargestImagePixelValue
< (0028,1050) DS [462]                                    #   4, 1 
WindowCenter
< (0028,1051) DS [925]                                    #   4, 1 
WindowWidth
---
> (0028,0107) xs 4197                                     #   2, 1 
> LargestImagePixelValue
> (0028,1050) DS [2098]                                   #   4, 1 
> WindowCenter
> (0028,1051) DS [4197]                                   #   4, 1 
> WindowWidth
304c304
< (0043,0000) UL 6866                                     #   4, 1 
PrivateGroupLength
---
> (0043,0000) UL 6864                                     #   4, 1 
> PrivateGroupLength
323c323
< (0043,1029) ?? 
01\00\00\00\91\75\2d\42\3e\00\00\00\9d\03\00\00\00\00\fe\03\e8\08... # 2068, 
1 Unknown Tag & Data
---
> (0043,1029) ?? 
> 01\00\00\00\13\36\45\43\7c\00\00\00\65\10\00\00\00\00\fe\03\2a\09... # 
> 2068, 1 Unknown Tag & Data
329c329
< (0043,1030) ?? 0f\00                                    #   2, 1 Unknown 
Tag & Data
---
> (0043,1030) ?? 0e\00                                    #   2, 1 Unknown 
> Tag & Data
337c337
< (0043,1039) ?? 36\30\30\5c\38\5c\30\5c\30\20            #  10, 1 Unknown 
Tag & Data
---
> (0043,1039) ?? 30\5c\38\5c\30\5c\30\20                  #   8, 1 Unknown 
> Tag & Data

But know I cannot understand if they are useful or not...

Il giorno 04/giu/2012, alle ore 20.06, Robert Haase ha scritto:

> Use DCMDUMP for two files where the position is equal. You should be able 
> to find out, what other tags of both files are different:
>
> http://support.dcmtk.org/docs/dcmdump.html
>
> You may also send the two DCMDUMPs to the Insight-User list. But please be 
> sure, that the files are anonymized.
>
> Best,
> Robert
>
>
>
>
> -----Ursprüngliche Nachricht----- From: Ale
> Sent: Monday, June 04, 2012 5:28 PM
> To: Insight User
> Subject: Re: [Insight-users] DWI images and GDCMSeriesFileNames
>
> Hi Robert thanks a lot but I still get a "File:  Distance: -xx.xxxx 
> position is not unique" for all the pairs of b=0, b=X files in the 
> directory... is there any chance to extract the correct sequence somehow?
>
> Thanks
>
>
> Il giorno 04/giu/2012, alle ore 10.01, Robert Haase ha scritto:
>
>> Hi Ale,
>>
>> try "Sequence Name 0018|0024". In my case (images from a Siemens Scanner) 
>> this field contains "*ep_b500t" for the b=500 image and "*ep_b50_500" for 
>> the ADC image. I hope this helps.
>>
>> Best,
>> Robert
>> -------- Original-Nachricht --------
>>> Datum: Mon, 4 Jun 2012 09:01:19 +0200
>>> Von: Ale <notinmyhead at gmail.com>
>>> An: Insight User <insight-users at itk.org>
>>> Betreff: [Insight-users] DWI images and GDCMSeriesFileNames
>>
>>> Hello,
>>>
>>> I'm wondering if someone is able to explain to me what kind of value we
>>> have to provide to the AddSeriesRestriction member of the 
>>> GDCMSeriesFileNames
>>> class in order to correctly extract the DWI series (the Beta 0 and the
>>> Beta X) from a DWI folder.
>>>
>>> Thanks,
>>> Ale
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