@njx58 Glad you started this discussion. I've just had my first Echolight scan also but I got the opposite of what is so commonly reported. My bone density / t-scores were much worse than my DXA scans.
Each vertebrae ranged from .8 to 1.2 t-score points less. So L1 went from -1.4 to a -2.6 t-score. And of course the actual density numbers were much worse also.
Paradoxically my fragility score for my spine was better than my TBS score from my DXA.
My femur neck was also worse but pretty close.

I find it very difficult to know what to think from this one Echolight test. More than one standard deviation off between the Echolight and DXA in my T-score is a lot of deviation.
With the DXAs I have 7 scans over 5-6 years. The scans were consistent overall. My scores didn't stay the same but each DXA showed further loss than the previous one up until I did Evenity and I had two after Evenity and they both were close. I had TBS 3-4 times and those were consistent to and I also had TBS improvement from the Evenity. If I was rich I'd go have another Echolight right away to see if the results of that were consistent.

The only reason for such a variance I can think of is that I have slight to moderate scoliosis. Could scoliosis make my DXA t-scores higher? Echolight claims scoliosis and arthritis do not effect the Echolight reading? But why would my L4 at the base of my spine before the scoliosis curve starts have the same variance as the other 3 vertebrae that are more in the scoliosis curve?

It's quite frustrating. I'll try to research beyond the marketing materials when I have more time. For now I'm going to base my decisions on my DXA scores which I have proven are consistent. I wish an objective third party would do a good comparison of these two approaches. I'm interested to see what else gets posted in this discussion.