GE Medical Systems
TiP Training Choices
Auto mA Quick Steps
What you select Why you selected it
Select Select New Patient and enter the appropriate
patient data. Select a protocol and perform a
Scout .
New A Single Scout (the last scout) will automatically
patient set mA for the acquisition based on a user
selected Noise Index
Enter patient data (AP scout recommended last on body imaging,
Perform the Scout(s) Lateral scout recommended last on spine and
Prescribe Axial or Helical series neck imaging)
Prescribe the desired Axial or Helical Series
scan parameters
slice locations
Select This will open the mA control box.
mA
Select This will provide a fixed mA value throughout
Manual the entire image group.
mA Enter the desired mA value.
Select
Auto mA will allow the system to automatically
Auto mA
adjust the mA values throughout the entire
image group.
mA Range:
Selects the range over which the system is
allowed to change the mA
Minimum mA is the lowest value in the range
Min
Max Maximum mA is the highest value in the range
GE Medical Systems
TiP Applications
A Soderman
2/2004 Rev. 0
What you select Why you selected it
The Reference Noise Index is the default or
Reference Noise Index baseline for the given protocol. This value can
only be prescribed while in Protocol
2.80 Reset Management
Reset will return the Reference Noise Index to
the GE target. This can only be done in Protocol
Management
Dose Steps Noise Index The relative dose arrows increase or decrease the
+ 0.00 relative dose by 1 relative dose unit (a 5% noise
2.80 index change)
•Dose steps adjust the noise index by steps of
5%
• + values increase required mA and dose but
decreases image noise
• - values decrease required mA and dose but
increases image noise
• A Dose step value of 0 indicates that the
prescribed Noise Index is equal to the Reference
Noise Index.
• Changing the relative dose by 1 click results in
a 10% mA change.
Type in the desired Noise Index
2.80 The Noise Index default for the anatomical area
and slice thickness chosen in the protocol is the
only way to reproduce the same scan at a later
time.
This is only active in protocol management.
GE Medical Systems
TiP Applications
A Soderman
2/2004 Rev. 0