DEXA certification — do private practice techs actually need it or is it mainly for hospital programs?

I'm a radiologic technologist working in a small outpatient orthopedic practice and my employer is pushing me toward the DEXA certification. I'm trying to understand if this credential signals something meaningful in a private practice setting or if it's mainly valued in hospital bone health programs. About 40% of our scans are DEXA at this point so I do want to be proficient.

I started studying about 4 weeks ago, mostly using the ISCD materials and a couple of textbook chapters on bone physiology and densitometry physics. The physics section is harder than I expected — understanding DXA beam geometry, artifact recognition, and precision error calculation takes real time if you haven't had formal densitometry training.

The positioning and scan acquisition sections feel more manageable since I'm doing these scans daily. But the interpretation side — T-scores vs. Z-scores, WHO fracture risk criteria, FRAX integration — is more clinical than I'm used to thinking as a tech. My practice questions in that area are running around 65%.

Anyone know if the ISCD exam requires a certain number of documented scans before you can sit? I'm trying to figure out if my practice volume qualifies me or if there's a minimum threshold I need to hit first.