GE Revolution CT User Manual page 9

3.4 Set up a pediatric or small patient exam............................................................................ 128
3.5 Adjust pediatric and small patient scan parameters........................................................... 129
3.5.1 Adjust the parameters by size, age, weight, height, and indications......................... 129
3.5.2 Consider decreasing the kV.......................................................................................130
3.5.3 Center the patient properly when using SmartmA..................................................... 131
3.5.4 Increase the pitch...................................................................................................... 131
3.5.5 Use Small SFOV Filters.............................................................................................131
Chapter 6 LARGE PATIENT................................................................................................................ 133
1 Overview......................................................................................................................................133
2 Large Patients............................................................................................................................. 134
2.1 Scanning large patients...................................................................................................... 134
2.1.1 Perform only necessary CT examinations................................................................. 134
2.1.2 Patient weight and patient size.................................................................................. 134
2.1.3 Properly position large patients in the gantry.............................................................134
2.2 Guidelines for adjusting individual exposure parameters by patient.................................. 135
2.2.1 Adjust parameters......................................................................................................135
2.2.2 High kV...................................................................................................................... 135
2.2.3 mA adjustment...........................................................................................................135
2.2.4 Lower pitch / slow rotation time................................................................................. 135
2.2.5 Scan Type..................................................................................................................135
2.2.6 Increase slice thickness.............................................................................................136
2.3 Radiation exposure and dose reporting..............................................................................136
Chapter 7 DOSE CHECK.....................................................................................................................137
1 Overview......................................................................................................................................137
1.1 Introduction.........................................................................................................................137
1.2 Protocol Considerations..................................................................................................... 138
1.3 Terminology........................................................................................................................138
1.3.1 Notification Value (NV).............................................................................................. 138
1.3.2 Alert Value (AV)......................................................................................................... 138
1.3.3 Dose Check Administrator......................................................................................... 138
Table of Contents
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
9