Table 4.

Mean elimination half-life in the whole organ and in the peripheral zone of each lung after administration of ^99mTc-Nanocoll and ^99mTc-DTPA, respectively, using the Pari nebulizer

	Elimination half-life (min)
	99mTc-Nanocoll	99mTc-DTPA	Difference	SEM	95% CI
Right lung, whole	513	99	414	53	(311, 517)
Left lung, whole	537	108	429	49	(332, 526)
Right lung, peripheral	715	94	621	140	(347, 894)
Left lung, peripheral	603	111	492	83	(329, 654)