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Table 1 Paddick’s conformity index PCI for investigated constellations

From: Finer leaf resolution and steeper beam edges using a virtual isocentre in concurrence to PTV-shaped collimators in standard distance – a planning study

PCI

  

Circular Collimator

MLC 0.5 cm (isocentric)

  

SID or SVID [cm]

100

70

50

100

70

50

∅ [cm]

Prescription

       

1.0

D80%

 

0.87

0.92

0.92

0.79

0.88

0.94

1.3

D70%

 

0.88

0.92

0.93

0.85

0.89

0.93

1.3

D80%

 

0.87

0.89

0.90

0.82

0.88

0.90

1.3

D90%

 

0.85

0.83

0.84

0.85

0.86

0.86

1.7

D80%

 

0.91

0.92

0.93

0.85

0.92

0.92

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Radiation Oncology

ISSN: 1748-717X

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