TABLE 2

Attenuation-Corrected Studies With and Without Correction for Misalignment Compared With Non–Attenuation-Corrected Studies

Segment	IRNC	IRAC	MD*	P*	IRAC-MC	MD^†	P^†
Anteroapical	85.1 ± 6.9	73.3 ± 6.3	−11.8	<0.001	79.2 ± 4.9	−5.9	<0.001
Inferoapical	83.3 ± 6.5	75.7 ± 6.4	−7.6	<0.001	80.9 ± 5.3	−2.4	0.034
Apical anterolateral	92.8 ± 3.4	83.0 ± 5.5	−9.8	<0.001	86.6 ± 5.4	−6.2	<0.001
Apical anterior	86.6 ± 5.6	73.8 ± 5.2	−12.8	<0.001	79.4 ± 4.5	−7.2	<0.001
Apical anteroseptal	84.9 ± 6.6	77.5 ± 7.5	−7.4	<0.001	85.1 ± 5.3	0.2	NS
Apical inferoseptal	84.4 ± 6.7	84.0 ± 6.7	−0.4	NS	89.8 ± 5.8	5.4	<0.001
Apical inferior	78.8 ± 6.6	82.2 ± 5.4	3.4	0.021	84.6 ± 5.5	5.8	<0.001
Apical inferolateral	86.8 ± 5.6	86.5 ± 6.5	−0.3	NS	87.9 ± 6.7	1.1	NS
Mid-anterolateral	94.9 ± 2.6	91.4 ± 3.7	−3.5	<0.001	90.6 ± 3.8	−4.3	<0.001
Mid-anterior	86.8 ± 4.1	81.3 ± 4.7	−5.5	<0.001	84.2 ± 4.7	−2.6	0.008
Mid-anteroseptal	81.1 ± 7.0	81.6 ± 7.1	0.5	NS	84.9 ± 5.9	3.8	0.001
Mid-inferoseptal	77.2 ± 7.0	85.5 ± 6.4	8.3	<0.001	87.0 ± 5.2	9.8	<0.001
Mid-inferior	72.4 ± 8.8	85.5 ± 6.6	13.1	<0.001	85.3 ± 7.8	12.9	<0.001
Mid-inferolateral	83.8 ± 6.1	91.5 ± 5.8	7.7	<0.001	88.6 ± 6.1	4.8	<0.001
Basal anterolateral	82.3 ± 5.7	82.0 ± 4.6	−0.3	NS	77.6 ± 4.9	−4.7	0.003
Basal anterior	74.7 ± 4.9	72.6 ± 5.2	−2.1	NS	71.8 ± 6.9	−2.9	NS
Basal anteroseptal	57.4 ± 7.1	57.5 ± 9.0	0.1	NS	56.2 ± 8.8	−1.2	NS
Basal inferoseptal	56.9 ± 7.2	61.9 ± 10.0	5.0	0.006	59.9 ± 10.2	3.0	NS
Basal inferior	63.6 ± 8.8	77.2 ± 8.2	13.6	<0.001	73.6 ± 9.3	10.0	<0.001
Basal inferolateral	73.9 ± 8.5	82.3 ± 7.7	8.4	<0.001	76.8 ± 8.6	2.9	NS

↵* Comparison of IRNC and IRAC.
↵^† Comparison of IRNC and IRAC-MC.
IRNC = iteratively reconstructed non–attenuation-corrected stress study; IRAC = iteratively reconstructed attenuation-corrected stress study; MD = mean difference; IRAC-MC = iteratively reconstructed attenuation-corrected stress study after correction for misalignment; NS = not significant.
Data are given as mean ± SD.