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Is there a better IGRT protocol?
Feature
EPI
X-ray
kV CT
MV
CT
US
MRI
No radiation exposure
for image acquisition
---
-
---
---
+
+
Soft tissue imaging
-
-
++
+
+
+++
No need for implanted
markers
-
-
+
+
+
+
Integrated and fast;
suitable for daily use
+
+
+
+
+
+
No organ displacement
due to image acquisition
+
+
+
+
-
+
Deals with intrafraction
motion
-
+
-
-
-
++