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Table 1 Patient and baseline characteristics

From: Simple calculation using anatomical features on pre-treatment verification CT for bladder volume estimation during radiation therapy for rectal cancer

 

N

%

Sex

 Female

194

42.0

 Male

268

58.0

Position

 Prone

410

88.7

 Supine

52

11.3

 

Mean ± SD

Age (yr)

59.1 ± 12.7

Vscan (mL)

236.0 ± 112.4

Vctsim (mL)

335.6 ± 147.5

 

Median (range)

Anatomic features (cm)

 Upper limit (U)

0.99 (−7.69–9.25)

 Lower limit (L)

10.03 (5.61–14.18)

 Ratio (L-U/L)

0.91 (0.19–2.08)

  1. Abbreviations: yr year, SD standard deviation, Vctsim bladder volume measurement using computed tomography simulation images