imr-framework / mrf Goto Github PK

I noticed that you reconstruct the images by using 48 or partial trajectory data,but the Nature paper "MRF" said the reconstruction only need a single trajectory data,so what's the reason of your solutions?

Could you tell me where to put the 'irt' folder? I put it in the mrf/Image_reconstruction folder,and call setup.m, but when I call the MRF_recon_demo.m it runs error.

Describe the bug
Running the code "demo_MRF.m" directly will report an error as follows.
Screenshots

Describe the bug
On Siemens interpret, running the .seq generated from the demo code will report an error in the sixth block (ADC), indicating that the time calculation is wrong.
I have checked this reason and found that it was because the time of this block in pulseq was shorter than the ADC duration calculated. Even if I set the adcleadtime to 10us in the Pulseq code at the beginning, it was useless.
Screenshots

Desktop (please complete the following information):

• OS: Windows 11
• Browser: chrome
• Version: 22H2

Additional context
I hope the author can help me check the reasons for the above two problems.Thank you.

Describe the bug
When I ran MRF_dict_matching_demo.m under mrf/Dictionary_Matching using T1 array slice data, the script generates incorrect T1 and T2 maps.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'mrf/Dictionary_Matching/Data'.
2. Load 'dict_example.mat'.
3. Download T1 array slice data from here, T2 array slice data from here
4. Load 'T1_plane.mat'.
5. Run the demo code in 'mrf/Dictionary_Matching/MRF_dict_matching_demo.m'.
6. The code generates incorrect parameter maps.

Expected behavior
The script should be able to produce T1 and T2 maps whose values agree with the true values reported by NIST. The true values can be found on NIST websites

Screenshots
These are the incorrect results given by the script.

Desktop

• OS: [Windows]

Describe the bug
The download of the raw data ("T1_plane_raw_data.dat") essential for the reconstruction process is currently unavailable, as are the "T1 array slice data" and "T2 array slice data."

To Reproduce
Steps to reproduce the behavior:

1. Go to 'mrf/Image_Reconstruction/Data'
2. When attempting to download using Git LFS, it shows: batch response: This repository is over its data quota.
3. The download of 'T1_plane_raw_data.dat' is currently not possible.

Expected behavior
Hope you could update the cloud drive for us to access and download the raw data. Thank you very much!

Describe the bug
Why the real part of all atoms in a dictionary generated by EPG_DICT_Sim toolbox are zero? Normal? Looking forward to your reply, thanks!

In a prior commit, the sequence design code was removed and not put back, so the demo script does not run, due to the function design_spiral_pulseq() not being present, among others.

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'E:\MRF\mrf-master\mrf'
2. Click on 'Run'
3. See error :
   undefined variable "mr" or class"mr.opts"。

error: gen_MRF_sequence_pulseq (line 27)
system = mr.opts('MaxGrad',Gmax,'GradUnit','mT/m',...

error: demo_MRF (line 7)
[kshot, dcf, ind, TR_all, FA_all, TE_all] = gen_MRF_sequence_pulseq();

where can I find the declaration of the class "mr"