Detectability of regional lung ventilation with flat-panel detector-based dynamic radiography
Detectability of regional lung ventilation with flat-panel detector-based dynamic radiography
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DOI：
10.1007/s10278-007-9017-8
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发表时间：
2008-03-01
影响因子：
4.4
通讯作者：
Matsui, Osamu
中科院分区：
文献类型：
--
作者：
Tanaka, Rie;Sanada, Shigeru;Matsui, Osamu
This study was performed to investigate the ability of breathing chest radiography using flat-panel detector (FPD) to quantify relative local ventilation. Dynamic chest radiographs during respiration were obtained using a modified FPD system. Imaging was performed in three different positions, ie, standing and right and left decubitus positions, to change the distribution of local ventilation. We measured the average pixel value in the local lung area. Subsequently, the interframe differences, as well as difference values between maximum inspiratory and expiratory phases, were calculated. The results were visualized as images in the form of a color display to show more or less x-ray translucency. Temporal changes and spatial distribution of the results were then compared to lung physiology. In the results, the average pixel value in each lung was associated with respiratory phase. In all positions, respiratory changes of pixel value in the lower area were greater than those in the upper area (P
