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Identify on a-p head x-ray: 1. frontal sinus 2. ethmoid air cells 3. maxillary sinus 4. nasal septum 5. crista galli 6. inferior nasal concha 7. coronoid process of mandible 8. condylar process of mandible 9. superior orbital margin 10. floor of anterior cranial fossa 11. superior orbital fissure 12. sagittal suture 12 Key to a-p head x-ray: 9 1 1 1 10 5 2 2 11 1. frontal sinus 2. ethmoid air cells 3. maxillary sinus 4. nasal septum 5. crista galli 6. inferior nasal concha 7. coronoid process of mandible 8. condylar process of mandible 9. superior orbital margin 4 6 3 7 8 10. floor of anterior cranial fossa 11. superior orbital fissure 12. sagittal suture This person had air injected into the ventricles of the brain. That is an old thing to do. Identify on lateral head x-ray: 1. coronal suture 2. lambdoid suture 3. sphenoid sinus 4. maxillary sinus 5. frontal sinus 6. sella turcica 7. bony palate 8. external auditory meatus 9. dens of axis 10. mastoid air cells 11. 3rd ventricle 12. posterior horn of lateral ventricle 13. anterior horn of lateral ventricle 14. inferior horn of lateral ventricle 15. interventricular foramen Key to lateral head x-ray: 1 13 15 2 12 5 11 14 6 8 3 1. coronal suture 2. lambdoid suture 3. sphenoid sinus 4. maxillary sinus 5. frontal sinus 6. sella turcica 7. bony palate 8. external auditory meatus 9. dens of axis 10. mastoid air cells 11. 3rd ventricle 10 4 9 7 12. posterior horn of lateral ventricle 13. anterior horn of lateral ventricle 14. inferior horn of lateral ventricle 15. interventricular foramen Identify on open mouth view: 1. dens of axis 2. body of axis 3. atlas 4. 3rd molar Key to open mouth view: 3 1 3 2 4 1. dens of axis 2. body of axis 3. atlas 4. 3rd molar Identify on angiogram of circle of Willis: 1. internal carotid a. 2. vertebral a. 3. basilar a. 4. anterior cerebral a. 5. middle cerebral a. 6. posterior cerebral a. 7. anterior communicating a. 8. posterior communicating a. 9. posterior inferior cerebellar a. Key to circle of Willis: 4 7 5 8 6 1. internal carotid a. 2. vertebral a. 3. basilar a. 4. anterior cerebral a. 5. middle cerebral a. 6. posterior cerebral a. 7. anterior communicating a. 8. posterior communicating a. 9. posterior inferior cerebellar a. 3 1 2 9 Identify on MRI: 1. anterior horn of lateral ventricle 2. posterior horn of lateral ventricle 3. septum pellucidum 4. head of caudate nucleus 5. internal capsule 6. lentiform nucleus 7. thalamus 8. 3rd ventricle 9. longitudinal fissure 10. corpus callosum 11. superior sagittal sinus Key to MRI: 1. anterior horn of lateral ventricle 2. posterior horn of lateral ventricle 3. septum pellucidum 4. head of caudate nucleus 5. internal capsule 6. lentiform nucleus 7. thalamus 8. 3rd ventricle 9. longitudinal fissure 9 5 10 3 6 1 4 7 8 10 2 10. corpus callosum 9 11 11. superior sagittal sinus Identify on MRI: 1. genu 2. body 3. splenium 4. thalamus 5. head of caudate nucleus 6. cerebellum 7. pons 8. midbrain 9. pituitary of corpus callosum 10. optic chiasm 11. 4th ventricle 12. cerebellomedullary cistern 13. spinal chord 14. sphenoid sinus 15. frontal sinus 16. ethmoid air cells 17. clivus 18. dens of axis Key to MRI: 2 3 1 5 4 8 9 7 16 16 genu 2. body 3. splenium 4. thalamus 5. head of caudate nucleus 6. cerebellum 7. pons 8. midbrain 9. pituitary of corpus callosum 10. optic chiasm 10 15 1. 6 11 11. 4th ventricle 12. cerebellomedullary cistern 14 13. spinal chord 17 12 14. sphenoid sinus 15. frontal sinus 16. ethmoid air cells 18 13 17. clivus 18. dens of axis Identify on MRI: 1. optic nerve 2. medial rectus m. 3. lateral rectus m. 4. cerebral peduncles 5. cerebral aqueduct 6. (superior) colliculi 7. temporal lobe Key to MRI: 2 1 3 7 4 6 6 5 4 1. optic nerve 2. medial rectus m. 3. lateral rectus m. 4. cerebral peduncles 5. cerebral aqueduct 6. (superior) colliculi 7. temporal lobe