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Re: DicomDir Started by vidula_joshi at 10-21-2008 1:23. Topic has 12 replies. LEAD Support Fo... » Developer » DICOM/Medical I... » Re: DicomDir

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10-21-2008, 1:23 vidula_joshi Joined on 11-20-2007 Posts 16 DicomDir Hi I want to create dicom directory for the structure which I am going to write on CD without creating same directory structure on local drive is it possible??? eg. structure on the local drive is like all file under patientid folder  C:\PatientID\*.dic  and On CD patientid folder it's study folder as CDDrive:\PatientID\Study1\*.dic i.e. the structure on CD is different than the local path from which i am getting the files. I do not want to create the same structure on local drive because it is time consuming. Regards Vidula      Report

10-21-2008, 10:19 Qasem Lubani Joined on 08-13-2006 Posts 1,187 Re: DicomDir Vidula, In the DICOMDIR data set, the file names are stored without path information. This means you can create the DICOMDIR in any folder you want, then move the files to a different file structure without having to re-generate the DICOMDIR again. Does this answer your question? Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

10-22-2008, 8:22 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir I will explain you from start again. My source folder is like C:\PatientID\*.dic. and I am creating DICOM DIR on the path  C:\PatientID as C:\PatientID\DICOMDIR as, Dicomdirds.Inserticonimagesequence=false for each file in sourcefolder Dicomdirds.InsertDicomfile  C:\PatientID\filename.dic After that I write the images on CD as, CDDrive:\Images\Study1\Series1\*.dic CDDrive:\Images\Study1\Series2\*.dic and Write DICOMDIR file on the path CDDrive:\Images\Study1\DICOMDIR My problem is after opening the dicom directory from CD path it will not show the images. Whether it will do? Is it requires the same folder structure?        Report

10-24-2008, 9:51 GregR Joined on 05-31-2006 In House Posts 1,811 Re: DicomDir You will need to update the Referenced File ID element (0004:1500) for each IMAGE that you change the directory structure.  This element is relative to where the DICOMDIR file is located.  The DICOMDIR file is a dataset just like any other dicom dataset file, so you can open it and modify it and then save it back out when you've made the necessary changes to the Referenced File ID tags. Greg Ross LEADTOOLS Technical Support    Report

10-31-2008, 6:18 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir How to update the Referenced File ID. What is the naming convention of   Referenced File ID. It is created like "some char ~some char.dic" e.g. "1271D3~1.dic". so while modifying this tag how I come to know the new file id. Is this depend on the no. of files in folder to be considered while creating the DIR?      Report

11-03-2008, 9:16 GregR Joined on 05-31-2006 In House Posts 1,811 Re: DicomDir You modify the Referenced File ID tag just like any other element in a dataset.  If you need specific details regarding which functions to use, please tell me the LEADTOOLS version and interface (COM, CDLL, etc.) that you are using and I'll try to point you in the right direction. For a definition of the Referenced File ID tag and how it is supposed to be used, please refer to the Dicom specifications part 3, section F.3.2.2. The number of files in the folder has nothing to do with the Referenced File ID.  Referenced File ID is just a tag that tells you where you can find the Dicom File that the specific IMAGE key is referring to. Greg Ross LEADTOOLS Technical Support    Report

11-04-2008, 5:55 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir I am sending the sample to create DICOMDIR with instruction to use and see the result. I am using VB 6.0 and Leadtools14.0 Please see the attached file. Thanks in advance.    Report

11-04-2008, 6:02 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir Attachment: DicomDir Sample.zip Attachment      Report

11-04-2008, 10:38 GregR Joined on 05-31-2006 In House Posts 1,811 Re: DicomDir As far as I can tell, you are doing everything correctly.  However, you were a little vague in describing what the problem actually was.  Could you be more specific regarding your comment that "But this moved dicomdir doesn't work" Also, what is the file version of LTR14n.dll that you are using? Greg Ross LEADTOOLS Technical Support    Report

11-07-2008, 6:51 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir If you load the moved dicomdir it doesn't point to image(some images are got missing). i.e. the Referenced file id tag doesn't point to image so we can't able to load  it using dicomds        Report

11-07-2008, 16:40 GregR Joined on 05-31-2006 In House Posts 1,811 Re: DicomDir Which image(s) aren't loading? What is the file version of ltr14n.dll that you are using? Greg Ross LEADTOOLS Technical Support    Report

11-07-2008, 17:02 GregR Joined on 05-31-2006 In House Posts 1,811 Re: DicomDir Nevermind, I was able to discern what you meant.  Unfortunately this is not a LEADTOOLS problem but a Windows "problem".  The issue is that according to the Dicom specifications, each file and directory name in a DICOMDIR can only be 8 characters long (See the Dicom specifications part 3 section F.3.2.2 for more details).  Therefore, since your files have long file names, we have to change the name internally to the DICOMDIR dataset to the DOS format (******~*).  This is not a problem normally, but when you move some of those files to another directory, the Windows DOS format name can actually change for the file name.  I confirmed this was the problem by renameing all of your files to 01, 02, 03...14 and then running your sample project.  The modified DICOMDIR worked perfectly. There is only two ways you will be able to fix this problem and still adhere to the DICOM standard: 1. Change the file names and subdirectories to adhere to the DICOM standard prior to creating the DICOMDIR. 2. Use the Windows name resolution to recalculate what the DOS format of the file name is after you have moved it. I recommend the first method for the purpose of being more in tune with DICOM and it will likely be easier.  However, if you decide to go the second route, you will need to contact Microsoft for help with how to get the correct DOS formatted name. Greg Ross LEADTOOLS Technical Support    Report

11-08-2008, 0:18 vidula_joshi Joined on 11-20-2007 Posts 16 Re: DicomDir Ok Thanks I got that porblem of short file name. Regards Vidula    Report

LEAD Support Fo... » Developer » DICOM/Medical I... » Re: DicomDir

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