Related by context. Frequent words. (Click for all words.) 57 OSI Systems 39 baggage screening 39 imaging 38 X ray machines 38 scanners 34 biometrics 34 X ray 34 scanning 33 detectors 32 scanner 32 Scanners 31 cargo containers 31 X ray machine 31 digital imaging 31 thermal imaging 31 x ray 31 radiation detectors 30 diagnostic 30 body scanners 29 magnetic resonance 29 thermal imaging cameras 29 scan 28 computed tomography 28 scans 28 Screening 28 diagnostic imaging 28 ultrasound 27 mammography 27 digital mammography 27 detector 27 virtual colonoscopy 26 screeners 26 baggage handling 25 screening 25 equipments 25 surveillance 25 microscopes 25 seaports 25 shipping containers 25 fingerprint 25 hi tech 24 microchips 24 surgical instruments 24 diagnostic tests 24 endoscope 24 airports 24 liquid explosives 24 CT scans 23 printer cartridges 23 checked baggage 23 water purification 22 endoscopy 22 MRIs 22 TSA 22 metal detector 22 sniffer dogs 22 drug sniffing dogs 22 laboratories 22 CAT scans 21 Mammography 21 radiography 21 metal detectors 21 CT scan 21 defibrillators 21 CT scanner 21 digital cameras 21 pat downs 20 Magnetic Resonance Imaging 20 scanned 20 computerized 20 equipment 20 checkpoints 20 fingerprinting 20 bomb sniffing dogs 19 x rays 19 magnetic resonance imaging 19 machines 19 X rayed 19 oxygen tanks 19 luggage 19 checked luggage 18 conveyors 18 wands 18 explosives 18 laptop computers 18 copiers 17 X rays 17 ambulances 17 conveyor belts 17 surveillance cameras 16 frisking 16 kiosks 15 microwaves 15 frisked 15 stretchers 14 generators 13 suitcases 13 plasma televisions 12 wheelchairs 7 trolleys 6 turnstiles