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Table 1 Patient demographics

From: Correlation of positron emission tomography ventilation-perfusion matching with CT densitometry in severe emphysema

Patient characteristics (n = 14) Mean Median Range
Age (years) 72 70 56 – 83
Male: female 11:3   
FEV1
Litres
% predicted
0.94
34
0.9
35.5
0.5–1.42
19–47
FEV1/FVC (%) 31 31 19–44
DLCO (% predicted) 40 37 28–64
Residual volume
 Litres
 % predicted
5.0
197
4.8
184
3.8–7.6
164–271
6MWD (m) 284 280 130–440
mMRC dyspnea score 3 3 2–3
Destruction scores*
 Upper lobes (%)
 Lower lobes (%)
 Most severely affected lobe (%)
  LUL 36% (5)
  RUL 21% (3)
  RML 7% (1)
  LLL 14% (2)
  RLL 14% (2)
  RUL and RML 7% (1)
56
52
69
60
52
73
4–82
19–76
50–82
  1. *Percentage of lung with density below – 910 HU
  2. FEV1 forced expiratory volume (first second), FVC forced vital capacity, DLCO diffusing capacity of lung for carbon monoxide, 6MWD 6-min walk distance, mMRC dyspnea score modified Medical Research Council dyspnea score (stratifies severity of dyspnea and associated disability), LUL left upper lobe, RUL right upper lobe, RML right middle lobe, LLL left lower lobe, RLL right lower lobe