TABLE 2

Comparison of Quantification Values on Perfusion Studies

Site	Planar	SPECT/CT	Absolute difference	P
Total right lung	54.8	55.1	1.2 (0–3.4)	0.15
Total left lung	45.2	44.9	1.2 (0–3.4)	0.15
Right upper lobe	11.9	22.2	10.7 (2.1–22.8)	<0.001
Right middle lobe	29.4	8.7	20.7 (11.1–36.0)	<0.001
Right lower lobe	13.5	24.6	11.1 (0.3–23.6)	<0.001
Left upper lobe	22.7	23.9	3.2 (0–10.6)	0.63
Left lower lobe	21.5	21.3	3.7 (0–10.8)	0.31

Data are mean, with range in parentheses.