3D NLS with many caution as below:

1) All metal and jewelry accessories is not allow

2) Do not touch phone and similar communication equipment

3) Reviver ( tea, wine, coffe etc. ) is not allow within 2 hours around testing.

4) Organ resection can be tested but should inform in advance so that choose the testing item at the beginning.

5)  Don't take drugs if want to testing by 3D NLS after 2 hours later

6) Testing environment keep quiet,  onlookers is not good for testing.

7) Keep relax when testing by the machine and do not talk with any body

8) Sitting or lying down are allow, activity is forbidden. patient sitting or lying within the USB line length distant circle to keep the machine working well.