al-affan I A, Haque A K
Physical Sciences and Scientific Computing, South Bank Polytechnic, London, UK.
Phys Med Biol. 1989 Jan;34(1):97-105. doi: 10.1088/0031-9155/34/1/010.
An analytical method has been developed to calculate the local energy deposited by alpha particles emitted from radon daughters deposited on the mucus surface in the lung airways. For the particular cases of 218Po (Ra A) and 214Bi (Ra C'), microdose spectra have been evaluated in test spheres of 1 micron diameter which were taken to lie within airways of diameters 18,000, 3,500 and 600 microns. In each case, the contributions of the near and far wall were computed separately. The average microdosimetric parameters yF and yD have also been calculated. For the two smaller airways, yF and yD values were found to be about 110 and 135 keV microns-1 for 218Po and about 87 and 107 keV microns-1 for 214Bi respectively. The corresponding values were about 10% higher for the largest airway.
已开发出一种分析方法，用于计算沉积在肺气道黏液表面的氡子体发射的α粒子所沉积的局部能量。对于218Po（镭A）和214Bi（镭C'）的特定情况，已在直径为1微米的测试球体中评估了微剂量谱，这些球体位于直径为18000、3500和600微米的气道内。在每种情况下，分别计算近壁和远壁的贡献。还计算了平均微剂量学参数yF和yD。对于两条较小的气道，发现218Po的yF和yD值分别约为110和135 keV·微米-1，214Bi的约为87和107 keV·微米-1。最大气道的相应值约高10%。
