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Appareil et procédé pour déterminer les caractéristiques fonctionnelles des poumons
专利权人:
Drägerwerk AG & Co. KGaA
发明人:
申请号:
EP09003376.2
公开号:
EP2228009B1
申请日:
2009.03.09
申请国别(地区):
EP
年份:
2018
代理人:
摘要:
An apparatus for determining functional lung characteristics of a patient comprising an electrical impedance tomography (EIT) imaging device adapted to record the impedance distribution within a plane of the thorax of the patient, the EIT imaging device including a control and analysis unit for performing the impedance measurement and deriving the impedance distribution within the plane of the thorax, characterised in that the control and analysis unit is further arranged to automatically perform the following steps: - determining a global impedance change, defined as the impedance change with respect to an earlier measured reference impedance distribution integrated over the electrode plane, and recording the global impedance change curve as a function of time, - performing breath detection in order to identify a breathing cycle, - subdividing each breathing cycle to define a plurality of intratidal intervals, - subdividing an EIT image from each interval into a plurality of regions of interest and calculating for each region of interest the ratio of the integrated impedance change within this region of interest to the global impedance change of this EIT image, - for each intratidal interval presenting indications of the ratios determined for the regions of interest to provide an intratidal gas distribution representation for each interval.
来源网站:
中国工程科技知识中心
来源网址:
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