For babies born very early and very small, doctors use two different brain scans to check for injury—but these scans don’t seem to agree with each other when it comes to spotting brain damage.

The study looked at brain scans of very premature babies and found that the chemical measurements from those scans didn’t predict how the babies would develop later. This suggests those measurements also probably don’t match up with signs of brain damage seen on MRI scans, which is what the claim says.