Fig. 2.

Distributions of relative deposition densities for two different IDMIs and two different radioactive microspheres in the ventricular myocardium of an open-chest sheep. The mean for each distribution is, by definition, one. For clarity of presentation, the histograms are presented by polygons joining the midpoints of the classes. The standard deviations of the distributions for the IDMIs were 0.169 and 0.173 and for the microspheres were 0.277 and 0.276. Piece sizes were 250 mg; with smaller piece sizes these distributions would be broader (Figure reproduced from Ref. [67] with permission from the American Heart Association.)