What the reason when I run MRI_Loop_Coil.m?

How to use openEMS. Discussion on examples, tutorials etc

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xtsl
Posts: 3
Joined: Mon 21 Sep 2020, 21:33

What the reason when I run MRI_Loop_Coil.m?

Post by xtsl » Tue 22 Sep 2020, 17:47

The system gave the following message when I run MRI_Loop_Coil.m

reading raw body specs: /tmp/Ella_26y_V2_1mm.txt
Error using textscan
Invalid file identifier. Use fopen to generate a valid file identifier.

Error in Convert_VF_DiscMaterial (line 83)
material_list = textscan(fid,'%d %f %f %f %s');

Error in MRI_Loop_Coil (line 46)
Convert_VF_DiscMaterial(VF_raw_filesuffix, VF_mat_db_file, body_model_file, ...

thorsten
Posts: 1411
Joined: Mon 27 Jun 2011, 12:26

Re: What the reason when I run MRI_Loop_Coil.m?

Post by thorsten » Tue 22 Sep 2020, 19:40

You will need the human body models to run this simulation.
But openEMS cannot include them, if you have no access to them, you cannot run this simulation
Read more here: https://openems.de/index.php/Tutorial:_ ... _Coil.html
Including alternatives to the human body models.

regards
Thorsten

xtsl
Posts: 3
Joined: Mon 21 Sep 2020, 21:33

Re: What the reason when I run MRI_Loop_Coil.m?

Post by xtsl » Wed 23 Sep 2020, 17:58

Hi Thorsten,
How to include the human body models to this simulation?

Thank you,

Qiang

xtsl
Posts: 3
Joined: Mon 21 Sep 2020, 21:33

Re: What the reason when I run MRI_Loop_Coil.m?

Post by xtsl » Wed 23 Sep 2020, 18:01

Hi Thorsten,
I read the following:
setup of a MRI Loop Coil for 7T
Converting and including a Virtual Family Body Model (I don't know how to do this!!!)
adding two SAR dump box planes
calculate the S-Parameter and input-impedance of the loop coil
calculate and plot B_1^+ and B_1^-
calculate and plot the SAR distribution

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