Multiparameter Analysis Using ¹⁸F-FDG PET/CT in the Differential Diagnosis of Pancreatic Cystic Neoplasms

Table 1

The differences in baseline characteristics and PET/CT parameters between serous cystic neoplasm (SCN) and mucinous cystic neoplasm (MCN) patients.

	Serous cystic neoplasms (n = 27)	Mucinous cystic neoplasms (n = 14)
Baseline characteristics
Age (years)	56.67 ± 12.24	43.50 ± 13.27
Female sex, n (%)	20 (74.07%)	12 (85.71%)
Diameter (cm)	3.97 ± 1.88	4.34 ± 1.87
Conventional metabolic parameters of PET/CT
SUVmax	1.82 ± 0.50	1.75 ± 0.86	0.763
SUVmean	1.33 ± 0.43	0.99 ± 0.33	0.014
MTV	49.03 ± 59.59	58.50 ± 49.54	0.613
TLG	61.52 ± 79.29	64.01 ± 74.97	0.923
Advanced metabolic parameters of PET/CT
SURmax (T/P)	1.43 ± 0.80	1.42 ± 1.09	0.980
SURmean (T/P)	1.13 ± 0.48	0.99 ± 0.67	0.449
MTV (T/P)	14.23 ± 19.84	13.79 ± 17.51	0.945
TLG (T/P)	19.22 ± 30.53	21.31 ± 40.67	0.854
SURmax (T/A)	1.15 ± 0.57	1.39 ± 1.23	0.596
SURmean (T/A)	0.92 ± 0.33	0.96 ± 0.79	0.214
MTV (T/A)	18.22 ± 27.46	13.21 ± 14.02	0.527
TLG (T/A)	20.54 ± 37.20	18.19 ± 30.83	0.841
Texture parameters of PET/CT
SD	0.29 ± 0.12	0.40 ± 0.29	0.194
Median	1.33 ± 0.45	0.94 ± 0.33	0.006
Percentile 5th	0.88 ± 0.38	0.47 ± 0.23	＜0.001
Percentile 95th	1.82 ± 0.50	1.75 ± 0.86	0.763
Skewness	0.21 ± 0.57	0.78 ± 0.45	0.002
Kurtosis	0.01 ± 0.85	0.69 ± 1.96	0.124
Diffentropy	0.26 ± 0.16	0.26 ± 0.16	0.903
Diffvariance	0.04 ± 0.04	0.05 ± 0.04	0.801
Contrast	0.07 ± 0.06	0.08 ± 0.07	0.507
Entropy	0.36 ± 0.30	0.42 ± 0.33	0.549

SUV : standardized uptake value; MTV : metabolic tissue volume; TLG : total lesion glycolysis; SUR: standardized uptake ratio; T/P : tumor/normal pancreas; T/A : tumor/aorta; SD : standard deviation.