TABLE 3

Comparison of Quantification Values on Ventilation Studies

			All patients (n = 29)		No central deposition (n = 18)		Central deposition (n = 11)
Site	Planar	SPECT/CT	Absolute difference	P	Absolute difference	P	Absolute difference	P
Total right lung	54.6	56.0	2.0 (0–8.8)	0.01	1.9 (0.1–8.8)	0.13	2.2 (0.4–6.0)	0.02
Total left lung	45.4	44.0	2.0 (0–8.8)	0.01	1.9 (0.1–8.8)	0.13	2.2 (0.4–6.0)	0.02
Right upper lobe	11.8	20.6	8.8 (0.2–19.2)	<0.001	9.1 (0.2–19.2)	<0.001	8.3 (4.9–13.6)	<0.001
Right middle lobe	27.3	9.3	18.0 (10.6–29.7)	<0.001	17.9 (12.5–27.0)	<0.001	18.2 (10.6–29.7)	<0.001
Right lower lobe	15.5	26.1	10.9 (0.2–12.0)	<0.001	10.4 (0.2–17.3)	<0.001	11.8 (2.4–27.3)	<0.001
Left upper lobe	21.7	22.3	3.6 (0–12.0)	0.82	3.2 (0–12.0)	0.87	4.3 (0.1–11.5)	0.63
Left lower lobe	22.4	22.0	3.5 (0–11.1)	0.22	3.4 (0–11.1)	0.27	3.6 (0.1–9.8)	0.57

Data are mean, with range in parentheses. Subgroup analyses were performed for patients with and without central deposition of Technegas.