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Imaging Features on US
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Training set (n = 80)
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Testing set (n = 40)
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P*
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|---|
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HAE(n = 36)
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ICC(n = 44)
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HAE(n = 24)
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ICC(n = 16)
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|---|
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Conventional US
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Location
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Right lobe
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30 (83.3)
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24 (54.5)
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20 (83.3)
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9 (56.3)
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0.252
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Left lobe
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6 (16.7)
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20 (45.5)
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4 (16.7)
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7 (43.7)
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0.393
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Lesion size
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≤ 5.0 cm
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14 (38.9)
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17 (38.6)
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8 (33.3)
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7 (43.7)
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0.755
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> 5.0 cm
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22 (61.1)
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27 (61.4)
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16 (66.7)
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9 (56.3)
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0.145
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Echogenicity
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Hyper or Iso
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5 (13.8)
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3 (6.8)
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5 (20.8)
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4 (25.0)
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1.000
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Mixed
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25 (69.4)
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14 (31.8)
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18 (75.0)
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5 (31.3)
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0.271
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Hypo
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6 (16.7)
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27 (61.4)
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1 (4.2)
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7 (43.7)
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1.000
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Margin
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Clear
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17 (47.2)
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20 (45.5)
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11 (45.8)
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8 (50.0)
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0.573
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Unclear
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19 (52.8)
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24 (54.5)
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13 (54.2)
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8 (50.0)
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0.287
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Bile duct dilatation
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1 (2.8)
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16 (36.4)
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1 (4.2)
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5 (31.3)
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0.462
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Pseudocystic appearance
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9 (25.0)
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1 (2.3)
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5 (20.8)
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0 (0)
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1.000
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Calcification
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16 (44.4)
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0 (0)
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13 (54.2)
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0 (0)
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NA
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CEUS
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Arterial phase
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Hyper-
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23 (63.9)
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35 (79.5)
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16 (66.7)
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15 (93.8)
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0.370
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Iso-
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5 (13.9)
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8 (18.2)
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5 (20.8)
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1 (6.3)
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0.141
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Hypo- or Non-
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8 (22.2)
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1 (2.3)
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3 (12.5)
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0 (0)
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1.000
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Enhancement pattern
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Regular rim
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33 (91.7)
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4 (9.0)
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20 (8.3)
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2 (12.5)
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1.000
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Irregular rim
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2 (5.6)
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22 (50.0)
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4 (16.7)
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7 (43.8)
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0.063
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Heterogeneous
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1 (2.7)
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9 (20.5)
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0 (0)
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5 (31.2)
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1.000
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Homogeneous
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0 (0)
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9 (20.5)
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0 (0)
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2 (12.5)
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NA
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Portal phase
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Hyper-
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1 (2.8)
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0 (0)
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0 (0)
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0 (0)
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NA
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Iso-
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9 (25.0)
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0 (0)
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10 (41.7)
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1 (6.3)
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1.000
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Hypo- or Non-
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26 (72.2)
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44 (100)
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14 (58.3)
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15 (93.7)
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0.3670
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Late phase
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Hyper-
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1 (2.8)
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0 (0)
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0 (0)
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0 (0)
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NA
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Iso-
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7 (19.4)
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0 (0)
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9 (37.5)
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1 (6.3)
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1.000
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Hypo- or Non-
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28 (77.8)
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44 (100)
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15 (62.5)
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15 (93.7)
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0.380
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Enhancement duration#
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197.4 ± 138.2
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23.7 ± 16.2
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205.9 ± 137.6
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19.9 ± 5.3
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Marked wash-out
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10 (27.8)
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32 (72.7)
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5 (20.8)
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12 (75.0)
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0.745
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- Note.---Unless otherwise indicated, data are number of nodules, with percentages in parentheses
- # Data are means± standard deviations
- *Statistical analysis using χ2 or Fisher’s exact test demonstrate differences between the training set and testing set. NA Not available
- HAE Hepatic alveolar echinococcosis; ICC Intrahepatic cholangiocarcinoma; US Ultrasound; CEUS Contrast enhanced ultrasound
