To summarize the research, the idea is to use X-rays like ultrasound: visualizing the elastic properties of the target instead of the density, but at higher resolution than ultrasound. They were able to create a 2-D image of particles in a gel in the lab.

Keep in mind that this is physic research, not medical research. They show that this imaging is possible. There are a bunch of difficult steps to making this medically useful. First, it is currently 2-D, not 3-D. It also needs to move from creating an image in the lab to a repeatable process, and then turned into a medical equipment product.

TL;DR: This is a lab demonstration of a new imaging technique in a physics journal. The title is entirely speculative. Abstract and paywalled paper here: https://iopscience.iop.org/article/10.35848/1882-0786/ab7e06...