Hi , I want to extract brain from other tissue and skull in MRI Images by BET(Brain Extraction Tool) , but I cant download it as software or use it as code, I cant find any type of these.
As far as I know, BET is a part of FSL package. If you have installed FSL, you should be able to use BET either through the terminal or through the FSL pop-up menu. Here's a link to the site from which you can download FSL with instructions on how to follow with the installation:
If you are very new to this field. I would suggest you to try built-in linux virtual machines like NeuroDebian or Lin4neuro. These systems could be freely downloaded and directly loaded to virtual machine. Tools like fsl could easyily installed and used.