Ultraslim endoscopy with flexible spectral imaging color enhancement for upper gastrointestinal neoplasms

Table 1 Five-point scale for evaluation of observation with flexible spectral imaging color enhancement

Point	Evaluation of observation with FICE
1	FICE fails to visualize lesions detectable with conventional images
2	FICE is slightly inferior to conventional images
3	FICE is comparable to conventional images
4	FICE is superior to conventional images
5	FICE allows detection of lesions not easily detected with conventional images or clearer visualization of areas poorly defined with conventional images

FICE: flexible spectral imaging color enhancement.

Table 2 Results of evaluation of visibility during observation with flexible spectral imaging color enhancement

Evaluation of FICE	1	2	3	4	5	Subtotal
Superficial carcinoma of the esophagus	0	0	2	1	0	3
Gastric non neoplastic polyp	0	0	3	0	0	3
Gastric adenoma	0	0	8	11	0	19
Early gastric cancer	0	0	11	17	0	28
	0	0	24	29	0	53

FICE: flexible spectral imaging color enhancement.

Table 3 Evaluation of color hue changes and visibility of lesions with flexible spectral imaging color enhancement observation

Evaluation of FICE	1	2	3	4	5	Subtotal
Hyperemicb	0	0	8	17	0	25
Discoloreda	0	0	7	11	0	18
Normocolored	0	0	9	1	0	10
	0	0	24	29	0	53

^aP = 0.0159 vs Normocolored;

^bP = 0.0027 vs Normocolored; FICE: flexible spectral imaging color enhancement.