FIGURE 2.

Diffraction patterns from various parts of an equatorial section of a rat heart. The heart moved by 0.21 mm in each frame so that the x-ray beam path is shifted from the epicardium (1) to the center (30). The central dark disk is the backstop with a central scatter around it. The inner arc/ring is the equatorial (1,0) reflection, the outer one the (1,1) reflection. In these images, the diffraction patterns are viewed from the downstream toward the upstream. In the last frame (30), the sectors that were used in the analysis of the diffraction pattern are shown. The number in each sector indicates the angle of the sector.