| 摘要 |
<p>Apparatus for providing a measure of extravascular lung water of a subject using a single thermal indicator, including means (16) for providing an injection of the thermal indicator into the bloodstream of the subject at a position proximal to or in the right heart (10), means (26) for detecting a first time-temperature concentration curve of the bloodstream at a position in the pulmonary artery, means (104) responsive to the first time-temperature concentration curve detected in the pulmonary artery for calculating a characteristic time for the first time-temperature concentration curve, means (28) for detecting a second time-temperature concentration curve of the bloodstream at a position in a systemic artery, means (104) responsive to the second time-temperature concentration curve detected in the systemic artery for calculating a characteristic time for the second time-temperature concentration curve, means (104) for calculating the now of blood through the heart and lungs, and means (104) for calculating a measure of extravascular lung water in accordance with the difference between the products of the blood flow times the first characteristic time and the blood now times the second characteristic time. </p> |
