Related by context. Frequent words. (Click for all words.) 72 MRIs 70 brain scans 69 CT scans 69 PET scans 69 MRI scan 67 scans 66 magnetic resonance imaging 65 MRI 62 PET scan 61 biopsies 61 CT scan 60 CAT scans 60 echocardiogram 59 biopsy 58 echocardiograms 58 x rays 58 Scans 57 ultrasound 57 angiography 56 scan 56 angiogram 55 magnetic resonance 55 fMRI 55 MR imaging 55 echocardiography 54 CT scanning 53 MRI scanner 53 ultrasounds 53 positron emission tomography PET 52 Magnetic Resonance Imaging 52 radiologists 52 X rays 52 X ray 52 CAT scan 51 PET imaging 51 x ray 51 imaging fMRI 50 sonography 50 mammograms 50 surgery 50 radiologist 49 Brain scans 49 keyhole surgery 49 radiation therapy 49 functional magnetic resonance 49 imaging 49 neuroimaging 49 surgeries 49 arthroscopy 49 radiographs 49 catheterization 48 surgical procedures 48 cardiac catheterization 48 computed tomography 48 mammogram 48 Ultrasound 48 abnormalities 47 diagnoses 47 chest X rays 47 EKGs 47 diagnosis 47 mammography 47 SPECT 47 cataract surgery 46 radical prostatectomy 46 colonoscopies 46 spinal tap 46 screening mammography 46 PET CT 46 colonoscopy 46 computed tomography CT 45 ultrasound imaging 45 radiotherapy 45 prostatectomy 45 radiation treatments 45 neurologist 45 electrocardiogram 45 surgical procedure 45 mammography screening 44 lesions 44 CT scanner 44 hip replacements 44 MRI exam 44 electrical stimulation 44 amniocentesis 44 sonograms 44 tissue samples 44 dense breasts 44 invasive procedure 44 tomography 44 Radiologists 43 retinal 43 asymptomatic 43 doctors 43 angioplasty 43 X ray imaging 43 hysterectomy 43 fluoroscopy 43 cardiologists 43 prostate 43 retinopathy