Tumor heterogeneity in gastrointestinal stromal tumors of the small bowel: volumetric CT texture analysis as a potential biomarker for risk stratification

Table 4 The diagnostic performance for differentiating low risk from intermediate to high risk small bowel-GISTs

Parameters	Arterial phase					Venous phase
Parameters	AUC	Cut-off	Sensitivity (%)	Specificity (%)	p value	AUC	Cut-off	Sensitivity (%)	Specificity (%)	p value
Mean attenuation (HU)	0.747	78.88	66.7	79.5	< 0.001^*	0.754	81.92	72.5	74.4	< 0.001^*
10th percentile attenuation (HU)	0.778	36.96	82.4	66.7	< 0.001^*	0.766	46.18	74.5	71.8	< 0.001^*
25th percentile attenuation (HU)	0.761	57.97	74.5	76.9	< 0.001^*	0.760	60.41	82.4	69.2	< 0.001^*
50th percentile attenuation (HU)	0.746	79.90	64.7	82.1	< 0.001^*	0.746	74.71	80.4	66.7	< 0.001^*
75th percentile attenuation (HU)	0.726	104.29	58.8	84.6	< 0.001^*	0.787	104.62	68.6	87.2	< 0.001^*
90th percentile attenuation (HU)	0.712	112.57	66.7	74.4	0.001^*	0.710	116.48	72.5	79.5	0.001^*
Entropy	0.823	5.86	82.4	76.9	< 0.001^*	0.830	5.98	82.4	74.4	< 0.001^*

ISSN: 1470-7330