Search found 33 matches

by JL
Tue, 2016-11-29, 17:30
Forum: DCMTK - General
Topic: Unable to open DCM file
Replies: 9
Views: 5177

Re: Unable to open DCM file

More info. I am using the Philips Dicom viewer to look at the dcm files in this study. The viewer is able to display the Dicom header (of individual images within the study) but when I clicked on Dicom Image, it said: Error, PixelData Missing. The average size of individual image is about 26MB. It i...
by JL
Tue, 2016-11-29, 16:36
Forum: DCMTK - General
Topic: Unable to open DCM file
Replies: 9
Views: 5177

Unable to open DCM file

Hello All, I am trying to access a dicom study. But the app that I use cannot access the image data. I used dcmdump to try to look into the header of an extracted image study. It returned the following: E: DcmElement: PixelData (7fe0,0010) larger (27262976) than remaining bytes in file E: dcmdump: I...
by JL
Thu, 2012-05-24, 22:41
Forum: DCMTK - General
Topic: Pixel Data
Replies: 1
Views: 2105

Pixel Data

Hello all, I came across a set of DICOM ECG waveform samples and none of my viewers can display these files except the viewer "GinkgoCADx". When I imported these DICOM samples to a PACS, the PACS server accepted the files but cannot display the images. I used dcmftest to test one of the sample which...
by JL
Wed, 2011-10-05, 15:59
Forum: DCMTK - General
Topic: Copy and paste Dicom tag segments
Replies: 4
Views: 4252

[quote="J. Riesmeier"] write a small C++ program based on the DCMTK".[/quote]

Thank you. Will do.
John
by JL
Tue, 2011-10-04, 21:17
Forum: DCMTK - General
Topic: Copy and paste Dicom tag segments
Replies: 4
Views: 4252

[quote="J. Riesmeier"]Most of your related questions do not really make sense to me since the "groups", e.g. (0028,xxxx), have no special meaning in DICOM.[/quote] More than likely, I used the wrong terminology. Please correct me for the use of proper name. For pixel data, for example, I want to cop...
by JL
Tue, 2011-10-04, 19:55
Forum: DCMTK - General
Topic: Copy and paste Dicom tag segments
Replies: 4
Views: 4252

Copy and paste Dicom tag segments

Hello All, I am doing a test. I want copy a segment of dicom tag from one file and insert and replace the same segment in another dicom file. I want to do the following: 1/ copy the tags from pixel data section and tags from private tag section from a Dicom file. 2/ Insert and replace the existing t...
by JL
Thu, 2011-09-22, 16:02
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

[quote="J. Riesmeier"]Maybe, it's too obvious but images of the SOP Class DigitalMammographyXRayImageStorage[b]ForProcessing[/b] are not meant to be displayed. [/quote] Would you be so kind as to explain what does the image with SOP class "DigitalMammographyXRayImageStorageForProcessing" used for? I...
by JL
Thu, 2011-09-22, 15:48
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

[quote="Chung-Yueh Lien"] You can also check whether the configuration of SOP Classes is changed on the GE workstation( or modality) or not. It is possible to create a series of transformation modles for the type of [/quote] Unfortunately, we don't have the GE MG workstation and the associated Sieme...
by JL
Thu, 2011-09-22, 15:37
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

[quote="Michael Onken"] If you want us to look at the image, you may send a sample to dicom at offis dot de. Michael[/quote] I would be much appreciated if your group can take a look at the image study. What exactly is the proper address? The one you quoted seems to be missing something "offis.de". ...
by JL
Thu, 2011-09-22, 05:59
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

[quote="Michael Onken"] Now, play with some [url=http://support.dcmtk.org/docs/dcm2pnm.html]options of dcm2pnm[/url], i.e. especially try the options given under " modality LUT transformation" and "VOI LUT transformation", ... ... Then, look at the output file each time and find out whether the milk...
by JL
Mon, 2011-09-19, 19:21
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

Re: Noise removal

[quote="Chung-Yueh Lien"] You can also try to display image by other DICOM Viewers. if all of them are seen clear, this is not a critical problem. [/quote] Umm... Sorry to confuse you. In the patient study, there were 5 priors. One generated by Hologic (from last week). The remaining 4 prior studies...
by JL
Sun, 2011-09-18, 16:36
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

Re: Noise removal

[quote="Chung-Yueh Lien"] The point is that images are created by Hologic and then sent to GE Workstation. Perhaps this the main reason why you get the "Milky mask" over the image. That is the meaning of "caused by the pixel data" written by J. Riesmeier.[/quote] OK. I got that now. Thank you. Actua...
by JL
Sun, 2011-09-18, 05:51
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

Re: Noise removal

[quote="Chung-Yueh Lien"] A single histogram for line-segment cross the region can help you to find the problem where caused from (pixel itself or transformation module). Maybe it is not the real noise.[/quote] Hello Chung-Yueh, Thanks for the feedback. I used KPAC to exact the images (in bmp format...
by JL
Fri, 2011-09-16, 17:44
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

[quote="J. Riesmeier"]This depends on whether the problem is caused by the pixel data itself [/quote] I am not too familiar with this terminology. Would you be able to explain a bit more what you mean "caused by the pixel data itself"? Thanks!! Do you mean that if the milky mask is created by the MG...
by JL
Fri, 2011-09-16, 06:24
Forum: DCMTK - General
Topic: Noise removal
Replies: 19
Views: 15163

Noise removal

Hello All, I have a series of studies for a person. Most of the image studies were generated by a GE MG workstation. We had terminated the lease of this workstation from GE early this year and have switched to lease another MG workstation from Hologic. Yesterday, I noticed that some of the studies g...