Table 1.

Comparison of image quality among three endoscopic modalities

item	mode	Score of image quality				total score
		1	2	3	4
	conventional endoscopy	26	33	63	0	281
morphology	magnifying NBI	0	0	12	110	476
	magnifying chromoendoscopy	8	19	45	50	381
	conventional endoscopy	26	62	34	0	190
pit pattern	magnifying NBI	0	0	25	97	463
	magnifying chromoendoscopy	0	0	40	82	448
	conventional endoscopy	40	59	23	0	227
blood capillary form	magnifying NBI	0	0	37	85	451
	magnifying chromoendoscopy	38	57	27	0	233