If you look at the contracts table in the 10-K filed in March, you'll see the current 5 contracts in process at the end of December. The "Billings in execss of Revenues" column provides the backlogs for each and total, e.g. the total backlog at end of December was $657,673. At completion of the contract (install and accept by client), the backlog for the contract in billing becomes booked revenue (top line). They bill at progress points: 60% at order, 20% at delivery, and 20% at install complete. That method was stated in the 10-Q for Q3 last year with following quote (which I assume is still being used folks in lack of any update I can find):
"Clients will be invoiced 60% of the contracts at signing, 20% upon delivery of components, and the final 20% upon completion of installation and start-up."
If you're asking about new contracts in Q1, we're waiting to see, as there haven't been any direct announcements (per prior board discussion). Obviously, a contract could have a very broad range from that $78K contract line in the 10-K to multi-millons for large projects with multiple big systems for a single site and/or maybe across a hospital group or other. That's why the contracts section is important to understand (in big part) for what's happened during the quarter.
I'm just trying to gives folks a few helpful hints on how to look at the Q1 10-Q after it's filed.