Admittedly I hsvent bern to US for s while due to Covid but on my last trip I dont remember bring body scanned at every airport. I would be surprised if all US airports bodyscan all passengers.
Bodydlscanners are increasingly common in Europe.
Increasingly dual view and computed tomography x-rays have explosives detection capability and these are becoming more widespread.
Nearly all airports also use explosive trace detection too.
In its most recent update to Annex 17, ICAO obliges contracting to states to ensure screening points have ecplosive detection capsbility. The older single view x-rays were harder to spot explosives with and regulators in Europe are increasingly phasing them out and requiring some form of combination of dual view or computed tomography x-ay often with explosive detection capsbility coupled with explosive trace detectors or body scanners.