Particles as Flow Tracers

  • Stephen H. Nellis
  • Kathleen L. Carroll


Because of the inherent myocardial motion, hemodynamic variables of the coronary microcirculation have been difficult to examine in the intact, freely beating heart. However, some of these variables, such as pressure and diameter, have previously been examined using a free-motion technique (Nellis et al., 1981). With the use of a low-light-level video camera and fluorescent microscopy, we have developed a technique for using particles as flow tracers, specifically to measure the velocity of flow in vessels of the coronary microcirculation.


Vessel Segment Flow Tracer Coronary Microcirculation Flash Duration Xenon Light 
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  3. Tilles AW, Eckstein EC (1987) The near-wall excess of platelet-sized particles in blood flow: Its dependence on hematocrit and wall shear rate. Microvasc Res 33: 211–223.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag New York Inc. 1989

Authors and Affiliations

  • Stephen H. Nellis
  • Kathleen L. Carroll

There are no affiliations available

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