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Figure 1 Changes in acoustic intensity (AI) values from the left anterior descending coronary artery (LAD) and left circumflex coronary artery (LCx) beds (denoted on the images) after the injection of BR14 during maximal hyperemia. The LAD had a non-critical stenosis, whereas the LCx bed was normal. Although a flow mismatch is seen early after injection, the AI in both beds is similar at a later point in time, indicating redistribution. See text for details.