| 摘要 |
<p>A system (B) introduces an enhancement agent into a fluid. The agent concentration in the fluid is monitored and the characteristics of the absorption curve representing the projected increase of concentration of the agent in the fluid are determined (34). A look-up table array (60) includes a plurality of look-up tables, each look-up table corresponding to one of a plurality of preselected absorption curves. A look-up table selection circuit (36) selects the look-up table which most closely corresponds to the projected absorption curve. An imaging means (A) generates a plurality of image representations at preselected intervals after commencement of enhancement agent introduction, which images are stored in an image memory array (144). Enhancement agent concentration values from corresponding pixels of each image representation are utilized to address the look-up table corresponding most closely to the fluid's absorption curve in order to retrieve precalculated partition coefficient, fluid flow rate, and confidence values. The retrieved values may be interpolated (80, 82) to compensate for the fluid's absorption curve falling among a plurality of curves or the measured enhancement agent concentration values falling between the preselected addressable values of the look-up tables. A display (96) displays images indicative of the partition coefficient, the fluid flow rate, and the confidence value.</p> |
