Pedantically, I think you could call muon tomography an antimatter imaging method. It doesnt explicitly use antimatter as a probe, but you do often measure products of antimatter decay or decay products that are antimatter themselves when doing it (depending on how much fidelity you need on the structure being imaged). I say pedantically because I assume you meant medical imaging methods and muon tomography doesnt have medical applications afaik
Are there other antimatter imaging methods?
Pedantically, I think you could call muon tomography an antimatter imaging method. It doesnt explicitly use antimatter as a probe, but you do often measure products of antimatter decay or decay products that are antimatter themselves when doing it (depending on how much fidelity you need on the structure being imaged). I say pedantically because I assume you meant medical imaging methods and muon tomography doesnt have medical applications afaik
https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2013.00037/full (I didn’t read the article, I just remembered that this was under consideration)