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Table 4 Correlation between systematic error (mean of prostate shift) and patients’ anatomical characteristics

From: Correlation between patients’ anatomical characteristics and interfractional internal prostate motion during intensity modulated radiation therapy for prostate cancer

 

Lateral

Craniocaudal

Anteroposterior

Age (years old)

p = 0.75

p = 0.78

p = 0.93

BMI (kg/m2)

p = 0.0008†

p = 0.42

p = 0.028††

Prostate volume (cc)

p = 0.96

p = 0.29

p = 0.68

Bladder volume (cc)

p = 0.45

p = 0.21

p = 0.17

Rectal volume (cc)

p = 0.28

p = 0.90

p = 0.68

Rectal mean area (cm2)

p = 0.55

p = 0.73

p = 0.93

  1. †Significant positive correlation, i.e. systematic error tends to be left/cranial/anterior as parameters rise, ††significant negative correlation, i.e. systematic error tends to be right/caudal/posterior as parameters rise
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