Table 2:

Clip orientation and diagnostic quality at the clip site

Position of Clip to Scan Plane	Completely Diagnostic	Clinically Useful	Not Diagnostic
In plane	3 (6.3%)	25 (52%)	20 (42%)
(24 clips, 48 evaluations*)
Diagonal	6 (15%)	25 (63%)	9 (23%)
(20 clips, 40 evaluations)
Perpendicular	3 (25%)	8 (67%)	1 (8.3%)
(6 clips, 12 evaluations)
Total (all positions)	12 (12%)	58 (58%)	30 (30%)
(50 clips, 100 evaluations)

^*A double reading per clip site results in twice as many evaluations as clip sites.