Observational Study
Copyright ©The Author(s) 2024.
World J Gastrointest Surg. Sep 27, 2024; 16(9): 2942-2952
Published online Sep 27, 2024. doi: 10.4240/wjgs.v16.i9.2942
Table 1 Clinical and pathological data of the low-risk group and the high-risk group, n (%)
    
Low-risk group (n = 80)
High-risk group (n = 52)
P value
Age (years)    58.2 ± 13.1    68.6 ± 10.0< 0.001
Gender        0.482
    Female    44 (55.0)    24 (46.2)    
    Male    36 (45.0)    28 (53.8)    
Maximal longitudinal diameter (cm)    5.8 ± 2.5    10.2 ± 2.8< 0.001
The position of the tumor        0.270
    Stomach    48 (60.0)    24 (46.2)    
    Gastric extracorporeal    32 (40.0)    28 (53.8)    
Mitotic figures in pathology
(50/HPF)
        < 0.001
    ≤ 5    72 (90.0)    10 (23.8)
    > 5    8 (10.0)    42 (76.2)
Table 2 The optimal radiomic feature set selected through dimensionality reduction of partial sequences
Sequence screening
Imaging omics features
DWI (3)[['original_shape_Sphericity']
'wavelet-HHH_glszm_ZoneEntropy']
['wavelet-LHH_firstorder_Kurtosis']
T1WI + CE-T1WI fs (5)[['lbp-3D-k_firstorder_Minimum']
['lbp-3D-m2_firstorder_Mean']
['wavelet-HHL_glcm_ClusterShade']
['wavelet-HLL_firstorder_Skewness']
['wavelet-LHH_glszm_SizeZoneNonUniformityNormalized']
T1WI + T2WI + DWI +; CE-T1WI fs (5)['wavelet-HHL_firstorder_Skewness']
['wavelet-HLL_firstorder_Skewness']
['wavelet-HLL_firstorder_Kurtosis']
['original_shape_Maximum2DDiameterSlice']
['wavelet-LHL_firstorder_Skewness']
Table 3 Result of a single sequence prediction model
    
Test group
Training group
AUC (95%CI)
Sensitivity
(%)
Specificity
(%)
AUC (95%CI)
Sensitivity
(%)
Specificity
(%)
DWI0.960 (0.840-1.000)80.0100.00.889 (0.736-1.000)88.966.7
T1WI0.812 (0.467-1.000)    75.0100.00.864 (0.677-1.000)66.7100.0
T2WI fs0.710 (0.495-0.894)    60.060.00.828 (0.727-0.917)82.665.2
Table 4 Multi-sequence prediction model results
    
Test group
Training group
AUC (95%CI)
Sensitivity (%)
Specificity (%)
AUC (95%CI)
Sensitivity
(%)
Specificity
(%)
TIWI + CE-T1WI fs0.834 (0.736-0.922)70.485.20.917 (0.825-0.984)77.888.9
T2WIfs + CE-T1WI fs0.783 (0.661-0.893)73.973.00.866 (0.769-0.949)73.991.3
DWI + CE-T1WI fs0.796 (0.684-0.899)70.477.80.825 (0.714-0.917)70.879.2
T1WI + T2WIfs + DWI + CE-T1WI fs0.818 (0.727-0.897)60.077.10.770 (0.567-0.938)70.080.0