Related by context. Frequent words. (Click for all words.) 67 X ray machine 62 scanners 60 baggage screening 57 metal detectors 53 body scanners 53 X ray 51 x ray 50 metal detector 47 radiation detectors 47 sniffer dogs 47 scanner 46 detectors 45 Scanners 45 screeners 44 CT scanner 44 screening 44 microscopes 43 CT scans 43 bomb sniffing dogs 43 surgical instruments 43 airports 43 imaging 43 scanning 42 pat downs 42 digital mammography 41 cargo containers 41 machines 41 conveyor belts 41 diagnostic 41 x rays 41 scans 40 equipment 39 mammography 39 computerized 39 radiography 39 fingerprinting 39 wands 39 checked baggage 39 Magnetic Resonance Imaging 39 checkpoints 38 equipments 38 wheelchairs 38 digital cameras 38 surveillance cameras 38 X rays 38 liquid explosives 38 MRIs 38 Screeners 37 turnstiles 37 TSA 37 explosives 37 shipping containers 37 diagnostic imaging 37 luggage 37 ultrasound 37 thermal imaging 37 seaports 37 CAT scans 37 scan 37 OSI Systems 37 microchips 37 Screening 37 oxygen tanks 36 stretchers 36 computed tomography 36 kiosks 36 laptop computers 36 hi tech 36 Mammography 36 magnetic resonance imaging 36 baggage handling 36 thermal imaging cameras 36 X rayed 35 endoscope 35 scanned 35 frisking 35 water purification 35 drug sniffing dogs 35 printer cartridges 35 ambulances 35 magnetic resonance 35 checked luggage 35 detector 35 diagnostic tests 35 CT scan 34 conveyors 34 copiers 34 plasma televisions 34 suitcases 34 trolleys 34 frisked 34 defibrillators 34 generators 34 microwaves 34 surveillance 34 digital imaging 34 virtual colonoscopy 34 laboratories 34 biometrics 34 fingerprint 34 endoscopy