Table 3:

Diagnostic confidence per reader for evaluation of ventricular size

	100% Dose	25% Dose		10% Dose
	J30	J30	H30	J30	H30
Reader 1	5.0 ± 0.0	5.0 ± 0.0	5.0 ± 0.2	4.7 ± 0.5	4.6 ± 0.5
Reader 2	5.0 ± 0.2	4.8 ± 0.5	4.6 ± 0.6	3.9 ± 0.9	3.3 ± 1.2
Reader 3	5.0 ± 0.0	5.0 ± 0.0	5.0 ± 0.0	4.9 ± 0.5	4.7 ± 0.6

Note:—5-point scale: 1 indicates nondiagnostic, cannot identify or rule out ventricular enlargement and shunt tube tip location; 2, will potentially miss mild ventricular enlargement and shunt tube tip location; 3, will probably not miss ventricular enlargement and shunt tube tip location; 4, most likely will identify all abnormalities with respect to ventricular enlargement and shunt tube tip; 5, can detect ventricular enlargement and shunt tube tip without diagnostic compromise.