Related by context. Frequent words. (Click for all words.) 62 CT colonography 60 virtual colonoscopy 56 colonoscopies 55 mammograms 55 CT scans 54 colon cancer screening 54 colonoscopy 51 Colonoscopy 50 biopsies 50 mammography 50 mammogram 50 unnecessary biopsies 49 Mammograms 49 ultrasounds 49 Pap smear 49 MRIs 48 PET scans 48 screening mammography 48 angiograms 48 CT scanning 48 invasive procedures 47 cardiac catheterization 47 dense breasts 47 infertility treatments 47 minimally invasive procedure 47 colorectal cancer screening 47 noninvasive 47 MRI scans 47 routine mammograms 46 mammography screening 46 trimester abortions 46 cervical cancer screening 46 CAT scans 46 amniocentesis 46 USPSTF 46 cardiologists 46 screening mammograms 46 nonsurgical 46 oncologists 45 Pap smears 45 invasive procedure 45 biopsy 45 diagnostic tests 45 imaging scans 45 IMRT 45 Radiologists 45 radiologists 45 echocardiograms 45 doctors 45 Pap test 45 PET imaging 45 PET scan 44 proton therapy 44 prostate specific antigen 44 catheter ablation 44 physicians 44 comparative effectiveness 44 ultrasound 44 PET CT 44 scans 44 Medicare recipients 44 Oncologists 44 CT scan 44 Pap tests 44 radiation oncologists 44 pap smears 43 MRI scanners 43 Cardiologists 43 HSAs 43 electrocardiograms 43 angioplasties 43 digital mammography 43 procedure 43 imaging 43 radiation therapy 43 breast exams 43 pap smear 43 bypass surgeries 43 urologists 43 ultrasonography 43 Mammography 43 gynecologists 43 minimally invasive 43 endoscopes 43 obstetricians 42 bioethicists 42 minimally invasive procedures 42 gastroenterologists 42 radiologic 42 gene expression profiling 42 insurers 42 dentists 42 computed tomography CT 42 radiology 42 Medicare 42 EHRs 42 surgical procedures 42 x rays 42 lumpectomy 42 Medicare reimbursement 42 medically necessary