1. MR Driving license course Day 2 – Buttonology
Stefan Skare
MR-Centrum, KS

2. Recommended literature
These handouts
To be ed to you
Basics of MRI
ladybird:/usr/local/info/education/basics_of_mri.tar
EPI
ladybird:/usr/local/info/education/EPI_APPS.PDF

3. Contents The scanner Overview of the interface
Stepping through a few relevant pulse sequences
Sending the exam away
TPS reset, reboot

4. MR scanner specs MRC1 MRC2 Strength Speed (Slew rate) 8 RF channels
33 mT/m over 45 FOV
Speed (Slew rate)
120 T/m/s
8 RF channels
MRC2
Zoom mode
40 mT/m over 35 FOV
150 T/m/s
Whole body mode
23 mT/m over 45 FOV
75 T/m/s
8 RF channels

5. Dock & undock the bed

8. Move table all the way out
Align on
Table in/out
Fast or slow
Set landmark
(define origin = [0,0,0])
Advance to scan
(move table to the center of tunnel)
Stop table
Back to Landmark
(hold 2 secs)
Move table all the way out
(hold 2 secs)

9. Emergency buttons

12. RF coils for head imaging
Standard head coil
8 channel head coil
“8HRBRAIN”

13. RF coils for head imaging
Standard head coil
8 channel head coil
“8HRBRAIN”

15. Where to find the RF coils

16. fMRI equipment

17. Contents The scanner Overview of the interface
Stepping through a few relevant pulse sequences
Sending the exam away
TPS reset, reboot

18. Choose the correct coil !
3-plane
Axial
Sagittal
Coronal
Oblique
Choose the correct coil !
Select 2D,
unless 3D-SPGR
MRC2 ONLY !
Choose gradient mode
(Whole or Zoom)
Always Zoom for EPI
Choose pulse sequence
Select imaging options

19. Contents The scanner Overview of the interface
Stepping through a few relevant pulse sequences
Sending the exam away
TPS reset, reboot

20. Pulse sequences
Localizer
3D SPGR
GE-EPI (fMRI)
DW-EPI

21. (not necessary for first series)
Localizer
Localizer
Select FOV of cm
Slice thickness e.g. 5 mm
0.0 1
Press
Prepare to Scan
(not necessary for first series)
Press
Save Series
Select iso-center
1 slice per axis
Press
Scan

22. 3D-SPGR
q3dgrass2

23. First prep for scan if manual sync with paradigm
GE-EPI
First prep for scan if manual sync with paradigm

24. Image allocation 1024 images / scan
# slices x # volumes < 1024
That’s why we use Brainwave (20,000 images)
For diffusion tensor imaging there is also need for > 1024 images
E.g. 50 slices x 55 diffusion directions  3,000 images
We’ve now have a solution to run DTI via Brainwave (not product)

25. # diffusion directions #RR = #slices/2 or maybe “/3”
DW-EPI
> 1024 images
# diffusion directions
Choose
#RR = #slices/2 or maybe “/3”
(Depending on heart rate)

26. Contents The scanner Overview of the interface
Stepping through a few relevant pulse sequences
Sending the exam away
TPS reset, reboot

28. Contents The scanner Overview of the interface
Stepping through a few relevant pulse sequences
Sending the exam away
TPS reset, reboot

29. Symptoms & Solutions MR system hangs Step1 - Hope that TPS reset works
Takes about 2 minutes
You’ll need to make a “New Patient” afterwards. Type “mr” instead of patient ID to pick up the last exam. No new landmark is required. New Localizer is however necessary.

30. Symptoms & Solutions MR system hangs Step 2 - Reboot
Open a terminal window andtype “reboot”
Step 3 – Hardware shutdown
Instead of “reboot”, type “poweroff”
When system is down, go in to the system cabinet in computer room and switch off and on
OFF: 12, 11, 10…1
ON: 1,2…12
If you forget to “poweroff” before doing this, I’ll personally kill you with a spoon

31. 1 2

33. This position is “ON”