Evaluation of vascular ingrowth into Dacron® velour was performed to compare methods and to determine the amount of vascular ingrowth. Microcasting and direct measurement were compared based on their ability to quantify ingrowth, the type of information obtainable, and the time required for data acquisition. Microcasting did not produce results indicative of the actual vascular ingrowth; however, direct measurement of histological slides gave quantifiable data for comparing vascular ingrowth. © 1991, Sage Publications. All rights reserved.