1 In the preoperative assessment of liver function reserve, which grading system do you use?
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2 Do you evaluate the FLR volume by CT volumetry?
a. Yes, only before hemihepatectomy
b. Yes, before segmentectomy or hemihepatectomy
c. No
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3 Do you perform preoperative PVE before hepatectomy?
a. Yes, based on the balance between the hepatic function and the FRL volume calculated by CT volumetry
b. Yes, only before right hemihepatectomy or trisectoriectomy (trisegmentectomy)
c. No
d. Others, please describe
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4 Which percentage of FRL volume do you accept without PVE in patients with normal liver function?
a. 20%
b. 25%
c. 30%
d. 35%
e. 40%
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5 Which percentage of FRL volume do you accept without PVE in patients with impaired liver function?
a. 30% or less
b. 35%
c. 40%
d. 45%
e. 50% or more
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