Yeah, I was surprised too when the project was pitched to me. At the time we did the article, a working group had proposed a revision to the Macdonald criter

Yeah, I was surprised too when the project was pitched to me. At the time we did the article, a working group had proposed a revision to the Macdonald criteria that still included bidimensional products, and this paper was in part a response to the revision. I think that's why our article was interesting enough for publication. This area is really neat to me because it seems at first to be easy: just take a couple of pictures, compare them, and there's the answer, right? But then you start thinking about differences in imaging modalities, contrast agents, calibration, signal processing, measurement axis, etc. and the problem becomes so hard I want to find something easier to work on.