TABLE 5

Stress Studies: Comparison of SPECT ^99mTc-MIBI Uptake with ¹³N-Ammonia PET Uptake (Smoothed Images) (n = 23)

Segment	PET, %	SPECT NC					SPECT AC
Segment	PET, %			%	MD*	P*	%	MD^†	P^†
Anteroapical	80.4 ± 5.6	88.7 ± 10.5	10.0	0.0003	80.6 ± 8.8	1.6	NS
Inferoapical	82.5 ± 5.5	83.3 ± 9.8	1.7	NS	81.8 ± 7.8	−0.1	NS
Apical anterolateral	82.0 ± 9.8	94.0 ± 6.0	11.9	<0.0001	89.2 ± 8.9	7.7	<0.0001
Apical anterior	84.8 ± 6.8	90.5 ± 9.4	7.2	0.0031	81.8 ± 9.5	−1.4	NS
Apical anteroseptal	90.8 ± 4.9	88.6 ± 8.1	−1.5	NS	87.6 ± 9.3	−2.2	NS
Apical inferoseptal	94.2 ± 3.5	89.0 ± 9.7	−4.5	NS	95.0 ± 7.5	1.6	NS
Apical inferior	94.0 ± 6.1	78.9 ± 11.0	−13.4	0.0001	87.7 ± 8.4	−5.2	0.0014
Apical inferolateral	86.5 ± 7.8	83.2 ± 8.2	−1.9	NS	86.4 ± 8.2	1.2	NS
Mid anterolateral	82.0 ± 11.0	92.4 ± 9.9	9.3	0.0001	90.1 ± 10.9	7.9	0.0003
Mid anterior	89.6 ± 7.4	88.3 ± 6.7	−0.7	NS	85.7 ± 8.8	−2.6	NS
Mid anteroseptal	95.4 ± 5.3	84.9 ± 9.0	−9.5	NS	88.9 ± 8.5	−5.1	0.0028
Mid inferoseptal	96.0 ± 3.8	79.7 ± 10.1	−16.4	0.0010	90.4 ± 8.3	−5.6	0.0075
Mid inferior	95.0 ± 6.7	72.7 ± 12.0	−22.0	0.0005	86.9 ± 10.7	−10.0	0.0054
Mid inferolateral	86.0 ± 8.4	78.6 ± 10.7	−7.6	0.0136	86.2 ± 11.7	0.8	NS
Basal anterolateral	76.1 ± 8.7	81.7 ± 10.5	4.8	NS	82.4 ± 10.2	6.1	0.0046
Basal anterior	84.9 ± 5.7	77.1 ± 8.5	−7.1	0.0058	79.4 ± 7.6	−4.7	0.0158
Basal anteroseptal	78.7 ± 8.7	62.6 ± 11.3	−15.6	<0.0001	65.8 ± 10.2	−12.4	<0.0001
Basal inferoseptal	81.4 ± 7.3	57.8 ± 10.1	−23.6	<0.0001	68.1 ± 9.7	−13.0	<0.0001
Basal inferior	91.1 ± 7.6	64.0 ± 11.7	−24.6	<0.0001	79.0 ± 12.0	−10.2	0.0003
Basal inferolateral	82.5 ± 5.5	71.2 ± 12.7	−9.3	0.0077	79.1 ± 12.9	−0.5	NS

↵* Comparison of PET and NC.
↵^† Comparison of PET and AC.
PET = uptake, smoothed to SPECT resolution (frames 15–20); % = studies normalized to segment with maximum uptake (PET and SPECT); MD = mean difference; NS = not significant.
Data are given as mean of 23 studies ± SD.