Abstract: To increase the efficiency for measuring the size ofmyocardium fibers in evaluation of myocardium hypertrophy, an analysismethod formyocardium hypertrophy imageswas proposed based onHough transform. W ith thismethod, Hough transform is performed on the image ofmyocardium fibers to detected the direction of the fibers. Lines perpendicular to the fiber direction are generated, on which the distribution of gray levels are collected. The lines are divided into low gray levels representing fiberwidths and high gray levels reprensenting the gaps between the fibers. In thisway, the numberand the averagewidth of fibers aremeasured. Thettestresults (P>0. 05) show thatthere is no significantdifference between the resultsmeasuredwith the proposedmethod and by hands.