Related by context. Frequent words. (Click for all words.) 75 Ultrasound 73 ultrasounds 71 ultrasound imaging 67 sonogram 64 echocardiogram 63 X ray 62 x ray 61 MRI 60 magnetic resonance imaging 60 sonography 58 angiography 58 echocardiography 58 magnetic resonance 57 imaging 57 MRIs 57 MRI scans 57 endoscope 56 CT scan 56 MRI scanner 56 computed tomography 55 endoscopes 55 endoscopy 55 x rays 55 biopsy 54 CT scans 54 breast biopsy 54 CT scanner 54 CT scanning 54 PET scan 54 mammography 53 CAT scan 52 non invasive 52 MRI scan 52 endoscopic 51 noninvasive 51 diagnostic 51 mammogram 51 invasive procedure 50 CT scanners 50 Magnetic Resonance Imaging 50 ultrasonic 50 biopsies 50 positron emission tomography PET 50 digital mammography 50 angiogram 50 laparoscopy 50 PET CT 50 EKG 50 radiation therapy 50 diagnostic imaging 49 ECG 49 radiographs 49 catheterization 49 CAT scans 49 transducer 49 radiographic 49 SPECT 48 radiography 48 electrocardiogram 48 radiologists 48 Doppler 48 X ray machine 48 minimally invasive surgery 48 Imaging 48 amniocentesis 48 radiologist 48 Fetal 48 X rays 48 minimally invasive 48 mammograms 48 arthroscopy 47 scans 47 fetal 47 implant 46 PET scans 46 microscopes 46 invasive procedures 46 ablation 46 surgical procedures 46 HIFU 46 laparoscopic 46 electrical stimulation 46 surgeons 45 cardiac catheterization 45 imager 45 retinal 45 radiology 45 imaging modalities 45 surgical instruments 45 radiotherapy 45 brain scans 45 virtual colonoscopy 45 laparoscopic surgery 45 minimally invasive procedure 45 interventional 45 Hologic 44 keyhole surgery 44 pre natal 44 non invasively 44 chest X ray 44 surgical procedure