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Table 2 Statistics of online match readings and individual target shifts

From: Geometric and dosimetric consequences of intra-fractional movement in single isocenter non-coplanar stereotactic radiosurgery

 

Online match readings

Individual target shifts

 

Lat (mm)

Vrt (mm)

Lng (mm)

Yaw (°)

Pitch (°)

Roll (°)

Δx (mm)

Δy (mm)

Δz (mm)

\({\Delta }_{\mathrm{tot}}\)(mm)

Mean

 − 0.2

 − 0.1

0.0

0.0

0.1

0.0

0.2

0.1

0.0

0.6

SD

0.3

0.2

0.4

0.4

0.4

0.3

0.3

0.3

0.4

0.3

Mean (abs)

0.3

0.2

0.3

0.2

0.2

0.2

0.3

0.2

0.3

0.6

SD (abs)

0.2

0.2

0.3

0.3

0.3

0.2

0.3

0.3

0.4

0.3

Max (abs)

1.1

0.8

1.9

1.3

2.3

1.0

1.1

0.8

2.0

2.2

90th percentile (abs)

0.6

0.4

0.8

0.6

0.6

0.5

0.7

0.4

0.7

1.0

95th percentile (abs)

0.7

0.5

1.0

0.8

0.6

0.7

0.7

0.6

0.9

1.2

  1. Online match readings were obtained by registering the post-treatment CBCT to the planning CT. Individual target shifts were calculated based on the acquired readings which quantified the intra-fractional movement during Hyperarc™ treatments. Here, abs and SD stand for the abbreviations for absolute values and standard deviations respectively