TABLE 1

Patient Characteristics

Patient (n = 30)	Age (y)	Sex	Primary tumor site	Underlying lung disease	Central deposition of Technegas
1	79	M	LUL	Severe emphysema	Present
2	80	F	LUL	None	Absent
3	61	M	LLL	None	Absent
4	79	F	LUL	None	Present
5	62	F	RLL	Moderate emphysema	Absent
6	53	F	RML	Severe emphysema	Present
7	73	M	LUL	Severe emphysema	Present
8	70	M	RLL	Severe emphysema	Present
9	74	M	RUL	Severe emphysema	Absent
10	79	F	LUL	None	Absent
11	52	F	Mediastinum	None	Absent
12	65	M	LUL	Severe emphysema	Absent
13	63	M	RLL	Moderate emphysema	Absent
14	75	F	RUL	None	Absent
15	60	F	RUL	None	Absent
16	70	M	RLL	Severe emphysema	Absent
17	69	M	LLL	Severe emphysema	Present
18	69	M	LUL	Moderate emphysema	Absent
19	56	M	RUL	Severe emphysema	Present
20	75	M	LUL	Multifocal infiltrates	Absent
21	69	M	LUL	Severe emphysema	Present
22	69	F	RLL	None	Absent
23	65	F	RUL and RLL	None	Absent
24	80	M	LUL	Moderate emphysema	Absent
25	74	M	RLL	Moderate emphysema	Absent
26	70	M	LLL	Severe emphysema	Present
27	64	F	RLL	Moderate emphysema	Present
28	56	F	RLL	None	Absent
29^*	55	F	LUL	Severe emphysema	Present
30	67	F	LUL	None	Present

↵* Excluded patient.
LUL = left upper lobe; LLL = left lower lobe; RLL = right lower lobe; RML = right middle lobe; RUL = right upper lobe.