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Table 3 Residual errors (mm) of different landmarks after the daily online match

From: Determination of the optimal matching position for setup images and minimal setup margins in adjuvant radiotherapy of breast and lymph nodes treated in voluntary deep inhalation breath-hold

  Systematic error Σ Random error σ
Object AP SI LAT AP SI LAT
MID_V1 3.2 4.1 1.4 2.4 3.4 1.4
UPPER_ST1 1.1 1.6 - 1.5 2.3 -
MID_R1 - 2.8 0.7 - 3.0 1.2
Setup corrections1 3.4 4.1 2.4 3.3 4.4 2.7
  1. 1includes interobserver variation in image matching.