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Figure 2 (Upper left panel) Selective right coronary angiogram demonstrating multiple aneurysms in a 16-year-old patient. (Upper middle and right panels) Intracoronary Doppler flow wire tracings in the posterior descending artery (PD) at rest (middle) and after adenosine triphosphate infusion (right). (Lower panels) In the same patients, transthoracic Doppler flow tracing are shown in the PD at rest and after dipyridamole infusion.