Human anatomy 75 Diagnostic imaging 33 Motor vehicles Recreational use 33 Magnetic resonance imaging 30 Forest roads 29 Dermatology 26 Human beings 24 Skin Diseases 24 Children 21 Roads 21 Histology 20 Tomography 20 Infants 19 Outdoor recreation 19 Geology 18 Surgery, Plastic 18 Anatomy 17 Brain Anatomy 17 Historical geography 17 Radiology 16 Frozen tissue sections 14 Pathology 13 Tomography, Emission 13 Surgery, Operative 12 Ultrastructure (Biology) 12 Anatomy, Comparative 11 Boats and boating 11 Bridger National Forest (Wyo.) 11 Surgery 11 Teton National Forest (Wyo.) 11 Diagnosis, Differential 10 Ultrasonic imaging 10 Hematology 9 Phytogeography Climatic factors 9 Stars 9 Cytodiagnosis 8 Fuelwood cutting 8 Geography, Ancient 8 Geology, Structural 8 Laparoscopic surgery 8 Optical coherence tomography 8 Radiography 8 United States 8 Automobile driving 7 Blood Diseases 7 Brain 7 Cartography History 7 Endoscopy 7 Medicine 7 Neuroanatomy 7 Nursing 7 Retina Diseases 7 Angiography 6 Atlases 6 Automobiles Recreational use 6 Benthos Habitat 6 Brain Magnetic resonance imaging 6 Cancer Imaging 6 Cardiology 6 Cats Diseases 6 Conifers Geographical distribution Climatic factors 6 Constellations 6 Dogs Diseases 6 Eye Diseases 6 Human physiology 6 Microsurgery 6 Pain Treatment 6 Physical diagnosis 6 Physiology, Pathological 6 Surgical robots 6 Woody plants Geographical distribution Climatic factors 6 Astronomy 5 Autopsy 5 Conduction anesthesia 5 Coral reefs and islands 5 Diagnostic ultrasonic imaging 5 Extremities (Anatomy) Surgery 5 Gastrointestinal system Surgery 5 Geology, Stratigraphic 5 Groundwater 5 Head Surgery 5 Heart Tomography 5 Kisatchie National Forest (La.) 5 Laparoscopy 5 Lungs Diseases 5 Lungs Endoscopic surgery 5 Mice Anatomy 5 Nervous system Diseases 5 Nervous system Surgery 5 Newborn infants 5 Off-road vehicle trails 5 Orthopedic surgery 5 Pain 5 Physical geography 5 Plants 5 Skin Diseases Diagnosis 5 Skin Histopathology 5 Skull base Surgery 5 Spine Imaging 5 Spine Surgery 5