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Table 2 Results of the measurement of relaxation and of randomization energy, Er

From: Motion and twisting of magnetic particles ingested by alveolar macrophages in the human lung: effect of smoking and disease

  Healthy SAR FIB COB
N 17 15 12 19
Ar_s 0.76 +/- 0.04 0.79 +/- 0.03 (**) 0.79 +/- 0.07 (ns) 0.75 +/- 0.06 (ns)
Tr_f, s 20.6 +/- 7.0 14.5 +/- 3.8 (**) 14.2 +/- 5.6 (**) 16.9 +/- 5.4 (ns)
Tr_s 259 +/- 61 257 +/- 39 (ns) 221 +/- 47 (ns) 239 +/- 57 (ns)
Tr_a, s 66.1 +/- 16.3 57.5 +/- 9.1 (ns) 50.2 +/- 12.5 (**) 55.7 +/- 14.5 (*)
b1 0.61 +/- 0.05 0.63 +/- 0.02 (ns) 0.60 +/- 0.04 (ns) 0.59 +/- 0.07 (ns)
b5 0.23 +/- 0.07 0.24 +/- 0.04 (ns) 0.20 +/- 0.06 (ns) 0.21 +/- 0.07 (ns)
Er, 10-18 J 6.0 +/- 2.1 4.6 +/- 1.5 (*) 5.2 +/- 2.6 (ns) 5.4 +/- 3.1 (ns)
  1. Data are presented as mean +/- SD; SAR: patients with sarcoidosis, IPF: patients with idiopathic pulmonary fibrosis, COB: patients with chronic obstructive bronchitis, N: number of subjects, parameters of the two-term exponential relaxation model: Ar_s: fraction of slow decay, Tr_f: time constant of fast decay, Tr_s: time constant of slow decay, Tr_a: time constant of initial decay; b1: normalized decay after 1 min.; b5: normalized decay after 5 min.; Er: cell energy; ns: not significant; *: p < 0.05, **: p < 0.01).