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Electromagnetic tracking (GPS)
Pros:
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Continuous real time measurements (10Hz)
➢
Intra fraction monitoring is used for others sites as well
•
Non ionizing
Cons:
•
Limited number of indications
➢
Mostly prostate
➢
Lung
➢
Breast (PBI)
➢
Pancreas
•
No anatomical information
•
Invasive pre imaging procedure