New Morphological Features for Grading Pancreatic Ductal Adenocarcinomas

Table 8

Evaluation results for distinguishing Normal and PDAC to each feature set.

Object	Feature set	TN	FP	FN	TP	SN (%)	SP (%)	PPV (%)	NPV (%)	ACC (%)
NEN	CNF	26.50	6.30	5.50	25.70	82.82	80.32	81.07	82.50	81.56
		(1.58)	(2.11)	(1.58)	(2.11)	(4.94)	(6.60)	(5.17)	(4.22)	(3.95)
	CLF	27.30	12.30	4.70	19.70	85.32	61.57	69.38	81.72	73.44
		(2.21)	(3.27)	(2.21)	(3.27)	(6.92)	(10.21)	(4.22)	(6.25)	(3.13)
Lumen	PLF	29.30	2.70	2.70	29.30	91.57	91.57	91.99	91.88	91.56
		(1.77)	(2.00)	(1.77)	(2.00)	(5.52)	(6.26)	(5.45)	(4.70)	(3.14)
	ALF	27.50	3.60	4.50	28.40	85.94	88.75	88.96	86.36	87.35
		(0.85)	(2.46)	(0.85)	(2.46)	(2.66)	(7.68)	(6.92)	(2.12)	(3.57)
	CEF	25.10	10.60	6.90	21.40	78.44	66.88	70.72	75.75	72.66
		(1.66)	(2.84)	(1.66)	(2.84)	(5.20)	(8.86)	(4.97)	(3.99)	(3.84)
EN	PEF	27.50	3.50	4.50	28.50	85.94	89.07	89.52	86.67	87.50
		(1.51)	(2.95)	(1.51)	(2.95)	(4.72)	(9.23)	(6.80)	(3.25)	(3.21)
	AEF	27.00	3.00	5.00	29.00	84.38	90.63	90.55	85.73	87.50
		(2.05)	(1.89)	(2.05)	(1.89)	(6.42)	(5.89)	(5.01)	(4.53)	(1.47)
	CDF	27.30	12.30	4.70	19.70	85.32	61.57	69.38	81.72	73.44
		(2.21)	(3.27)	(2.21)	(3.27)	(6.92)	(10.21)	(4.22)	(6.25)	(3.13)
Duct	PDF	29.80	1.40	2.20	30.60	93.13	95.63	95.78	93.50	94.38
		(1.40)	(1.51)	(1.40)	(1.51)	(4.37)	(4.71)	(4.34)	(3.80)	(2.35)
	ADF	27.50	3.60	4.50	28.40	85.94	88.75	88.96	86.36	87.35
		(0.85)	(2.46)	(0.85)	(2.46)	(2.66)	(7.68)	(6.92)	(2.12)	(3.57)
	CTF	26.90	11.70	5.10	20.30	84.06	63.44	70.34	80.92	73.75
		(2.28)	(3.74)	(2.28)	(3.74)	(7.13)	(11.70)	(5.32)	(6.11)	(3.44)
Tissue	PTF	29.80	2.50	2.20	29.50	93.13	92.19	92.74	93.26	92.66
		(1.32)	(2.22)	(1.32)	(2.22)	(4.11)	(6.95)	(6.15)	(3.76)	(3.21)
	ATF	27.50	3.60	4.50	28.40	85.94	88.75	88.96	86.36	87.35
		(0.85)	(2.46)	(0.85)	(2.46)	(2.66)	(7.68)	(6.92)	(2.12)	(3.57)

TP (true positive): the number of PDACs that are correctly classified as PDACs.
FP (false positive): the number of Normals that are incorrectly classified as PDACs.
FN (false negative): the number of PDACs that are incorrectly classified as Normals.
TN (true negative): the number of Normals that are correctly classified as Normals.