Lung sound analysis with time-dependent fractal dimensions

被引：2
|
作者：
De Oliveira, LPL [1 ]
Roque, WL
Custódio, RF
机构：
[1] Univ Vale Rio Sinos, Ctr Ciencias Exatas, BR-93022000 Sao Leopoldo, RS, Brazil
[2] Univ Fed Rio Grande Sul, Inst Matemat, BR-91501970 Porto Alegre, RS, Brazil
[3] Univ Fed Rio Grande Sul, Inst Informat, BR-91501970 Porto Alegre, RS, Brazil
来源：
CHAOS SOLITONS & FRACTALS | 1999年 / 10卷 / 09期
关键词：
D O I：
10.1016/S0960-0779(98)00101-5
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We investigate the time-dependent fractal dimension associated to the time series obtained by the aulscultation of human lung sound during inspiration and expiration, following a standard clinical procedure. It has been verified that the dimension remains constant about 1.49 for normal samples, despite of the physical characteristic of the individuals. In contrast, it has a nonconstant behavior for abnormal cases, when adventitious sounds are present. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1419 / 1423
页数：5
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