TABLE 2.

Per quadrant analysis (only quadrants with all four segments examined were included in this analysis. Additional segments were imaged in the study but not included in the quadrant breakdown) SC inlet valve-like structures (SIV).

Quadrant	Segment	SIV	SIV w/microsphere
SN	74	92	10
IN	101	124	20
IT	96	120	24
ST	68	89	7
Total	339	425	61

Quadrant	SIV/segment	% of SIV w/microsphere
SN	1.24	10
IN	1.23	16
IT	1.25	20
ST	1.31	8
Average	1.25 ± 0.04	13.50 ± 5.50