ASMR

Bladder IGRT

• 24 patients • Very large shifts observed • Required margin: 13 mm

Average translation (mm)

Systematic error Σ (mm)

Random error σ (mm)

0.8

1.5 5.3 3.9

2.4 4.4 4.4

Left-Right

-1.7 -0.4

Cranial-Caudal Anterior-Posterior

Range (mm) 0.6 - 32.7

7.8

3D-vector