CT/99mTc-GSA SPECT fusion images demonstrate functional differences between the liver lobes

Table 1 Clinical characteristics of the patients

Clinical characteristics	Statistics
Age, yr, (median)	37-87 (69)
Sex (male:female)	17:13
Hepatitis virus
Hepatitis B	1
Hepatitis C	5
Serum liver function test: median (range)
Albumin level, g/dL	4.2 (3.8-4.7)
Bilirubin level, mg/dL	0.6 (0.3-1)
Platelet count, × 104/mL	19.9 (14.9-41.4)
Prothrombin time, s	11.8 (10.1-12.8)
CT attenuation value of the liver on non-enhanced CT: median (range)
Right lobe, HU	56.3 (35.0-70.5)
Left lobe, HU	57.5 (39.5-73.0)
Diameter of portal vein: median (range)
Right portal vein, mm	10.2 (6.6-13.6)b
Left portal vein, mm	8.4 (4.5-10.8)b
LPV-to-RPV diameter ratio: median (range)	0.78 (0.5-1.26)
Disease
Criterion 1: Patients with extrahepatic tumors (n)	15
Early gallbladder cancer without liver invasion	11
Gastric gastrointestinal stromal tumor	1
Peritoneal dissemination of ovarian cancer	1
Intra-abdominal recurrence of gastric cancer	1
Extrahepatic bile duct cancer without bile duct dilatation	1
Criterion 2: Patients with intrahepatic small tumors (n)	15
Hepatocellular carcinoma	4
Liver metastasis	9
Intrahepatic cholangiocarcinoma	2
Tumor location in patients within criterion 2 (n)
Segment 1/segment 2/segment 3/segment 4/segment 6/segment 8	3/1/1/2/4/4

HU: Hounsfield units; CT: Computed tomography; LPV: Left portal vein; RPV: Right portal vein.

^bP < 0.001.