Diane - I had a muga scan done before AC, then one before I started Herceptin to establish a baseline. Before AC - ejection fraction was 65%, 55% after. I get a Muga done every 3 months while on herceptin - all have been around 52-53%. I have a couple more months of herceptin and one muga to go. I accidentally scheduled a Muga for the day after the herceptin IV and had to cancel because they said it would have skewed the results. Good luck with the herceptin.
Best
Tami
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