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Table 3 Differences between mean CT volumes and mean intraoperative volumes as well as mean absolute and relative disagreements between CT volumes and intraoperative volumes

From: Semi-automated computed tomography Volumetry can predict hemihepatectomy specimens’ volumes in patients with hepatic malignancy

 

Differences between mean CT volumes and mean intraoperative volumes

Mean absolute and relative disagreements of CT volumes (with and without conversion factors) and intraoperative volumes

without conversion factor

with correction by general conversion factor

with correction by operation-specific conversion factor

All patients

(n = 24)

106 cm3*

112 cm3/13.1%

57 cm3/6.3%

41 cm3/4.6%

Patients with left hemihept-ectomy (n = 6)

29 cm3

32 cm3/13.2%

16 cm3/6.6%

16 cm3/6.5%

Patients with right hemihepat-ectomy (n = 11)

152 cm3*

152 cm3/16.9%

52 cm3/6.0%

19 cm3/2.5%

Patients with extended right hemihepat-ectomy (n = 7)

99 cm3

116 cm3/7.2%

99 cm3/6.3%

95 cm3/6.1%

  1. Differences between CT volumes and intraoperative volumes that are statistically significant (using a two-tailed Wilcoxon signed-rank test) are marked with*