Results of a feasibility study indicate that measures of trans-stenotic pressure gradients can be safely and effectively obtained in intracranial large arteries through the use of a guidewire. Use of ...

However, when V 1 is greater than 1 m/s, which may be seen in concomitant AR or a high output state, it should be included in the formula. The mean pressure gradient is derived from the average ...

Journal of Experimental Botany, Vol. 43, No. 255 (October 1992), pp. 1325-1331 (7 pages) The magnitude of gradients of water potential in growing tissues will reflect processes which limit growth rate ...