Low-dose spectral insufflation computed tomography protocol preoperatively optimized for T stage esophageal cancer - preliminary research experience

Table 2 Comparison between esophageal squamous cell carcinoma-enhanced features and pathological T stage

Group	Enhancement feature	Medullary type		Ulcerative type		Mushroom type		Total
		T1/2	T3	T1/2	T3	T1/2	T3
A	Layered	3	2	2	0	1	0	8
	Unlayered	6	8	6	4	4	3	31
Total		9	10	8	4	5	3	39
B	Layered	5	2	0	0	0	0	7
	Unlayered	4	8	2	5	4	3	26
Total		9	10	2	5	4	3	33
C	Layered	6	1	1	1	3	0	12
	Unlayered	2	8	2	4	2	2	20
Total		8	9	3	5	5	2	22