In rural Rwanda, in 2008, for the duration of the study you linked after jumping at the first cherry picked example that your Google search found, they were the most frequently made examination.
But even according to that article, out of the 345 examinations only 102 were pregnancy scans, making them a minority of all scans made.
>clearly not what you were implying by saying it is a minority of scans.
It is exactly what I was saying. And I say this because I work in a hospital with several non-preggo ultrasound labs that are booked overtime. To achieve the same load of pregnancy scans the hospital would need to hire more OB-staff for scanning and the region would need a TFR of 25.
https://www.researchgate.net/figure/Ultrasound-scan-types-Th...