Request for demo data or script for data structure for Philips dicom

[sunpengmri]

Dear Dr. Julio Sotelo,

Thanks a lot for kindly sharing this useful tool for 4D-Flow. May I request some demo data to try this code? Or if you have some scripts to prepare the "data.mat" structure for Philips 4D-flow Dicom. I appreciate a lot for your help!

Best,
Peng

[JulioSoteloParraguez]

Dear Peng,

I hope that you are doing very well.

You can copy and paste the code that is between the lines 11094 and 11282 (in the GUIDE_4D_FLOW.m file) in a new file and adapt to your data, this code is the part that reads the data from philps, unfortunately these codes are not standard because it all depends on how the data was acquired, it can be acquired in enhanced or nonenhanced data, and also some anomizations can remove some vital information inside the dicom.

If you want you can share with me one anonimized 4D flow MRI example (to my email julio.sotelo@usm.cl), and I can write you a code that convert the data to data.mat format.

Best

[sunpengmri]

Woo, thanks a lot for your quick reply and very kind help. I can try it by myself. If I cannot make it, I will request your help. I have another question. From the "USER-GUIDE-4D-FLOW-APP-GITHUB.pdf", I need generate "data.mat" before loading the data. Since there are some codes processing dicom in the "GUIDE_4D_FLOW.m" file, if I can use it to process dicom data directly (don't generate "data.mat" manually).

Best!

[JulioSoteloParraguez]

Originally, I thought to leave it that way that I could read directly the DICOM files, but the problem is that with each update of the MR scanner (Philips, Siemens or GE), they change some details of the DICOM header (especially in SIEMENS), also if they anonymize with commercial software such as singovia, gyrotools, or other tools can also modify some elements of the DICOM header. Since it was too much work to have to update every time the reading process through the app, for each user who had images from different equipment, I decided to just load the data as a standardized structure, and leave the reading process of the DICOM data in the hands of the researcher.

However if you are using Philips and you want to save your data in PAR-REC format (from the scanner), you can read them without any problem, you have to leave in the reading folder, one magnitude image and three phase images, and it should read it without any problem.

Best