Related by context. Frequent words. (Click for all words.) 63 CT scans 61 PET scans 59 MRI scans 56 CT scanning 55 CAT scans 53 PET scan 52 brain scans 52 CT scan 52 MRIs 52 angiograms 52 biopsies 51 electrocardiograms 51 chest X rays 51 EKGs 50 scans 50 PET imaging 50 imaging 50 magnetic resonance imaging 49 biopsy 49 noninvasive 49 computed tomography CT 49 echocardiogram 49 computed tomography 48 ultrasound imaging 48 Magnetic resonance imaging 48 CAT scan 47 X ray 47 X ray imaging 47 CT colonography 47 positron emission tomography PET 47 x rays 46 MRI scanners 46 fecal occult blood 46 prostate specific antigen 46 fMRI 45 X rays 45 colonoscopy 45 spinal tap 45 Pap smear 45 echocardiograms 45 ultrasound 45 chest x ray 45 needle biopsy 44 positron emission tomography 44 x ray 44 ECGs 44 fluoroscopy 44 radiation therapy 44 minimally invasive procedures 43 dense breasts 43 invasive procedures 43 echocardiography 43 electrocardiogram 43 virtual colonoscopy 43 MRI 43 SPECT 43 Brain scans 43 colon cancer screening 43 Pap test 43 imaging fMRI 43 biopsied 43 Colonoscopy 43 MR imaging 43 MRI scan 43 invasive procedure 43 non invasive 43 EKG 42 androgen deprivation therapy 42 mammography 42 angiography 42 tomography 42 unnecessary biopsies 42 CT scanner 42 neuroimaging 41 screening mammography 41 abnormalities 41 colonoscopies 41 migraine sufferers 41 tumors 41 Botox injections 41 chest X ray 41 radiologic 41 diagnoses 41 angiogram 41 cardiac catheterization 41 breast tumors 41 endoscopes 41 CT scanners 41 diagnostic tests 41 radiation treatments 41 mammograms 40 Scans 40 imaging modalities 40 breast tissue 40 Ultrasound 40 ultrasounds 40 hormone therapy 40 Radiologists 40 adenomas 40 thallium 40 MRI scanner