localization-imaging-lecture-2.pdf interpretation
- 1. Intro to Head CT Renee B. Van Stavern, MD Neurology
- 2. Normal head CT Back Front Slice thickness Bone Muscle Hemorrhage Contrast Brain Grey matter White matter Edema CSF Fat Air Attenuation
- 4. CT Contrast
- 5. CT Contrast Kindergarten Kop – It’s NOT a tuma. B. Mendelson
- 6. CT Advantages Fast Available (Relatively) inexpensive Sensitive for intracranial hemorrhage
- 7. CT Limitations There is radiation Bone artifact obscures visualization, especially posterior fossa and spinal cord Not very sensitive to intraparenchymal lesions or brain edema Noncontrast CT misses many abnormalities Risk of allergic reaction to iodinated contrast media
- 8. http://www.radiology.wisc.edu/Med_Students/neuroradiology/NeuroRad/NeuroRad.htm Cingulate gyrus Brain Anatomy Review The anatomic origin of the foot fetish. K. Clark
- 9. Major brainstem divisions 1 2 3 4 5 6
- 15. 2 4 3 1
- 16. Note Brainstem Orientation! CT Neuroanatomy Class WU Neuroscience Tutorial http://thalamus.wustl.edu/course/ Dorsal Ventral Ventral Dorsal
- 18. 1 2 3 4 5 6 7
- 19. 1 2 3 4 5 6 7
- 21. 1 2 3 4 5 6 7 8
- 22. 1 2 4 3 Creepy two eyes and a smiling face – C. Sumey
- 24. 1 2 3 4 5 6 7
- 26. 1 2 3 A calcified, ciliated, CSF-producing mucosal structure. C. Hou
- 28. 1 2 3 4 7 5 6
- 29. Arteries
- 30. 1 2 3 4 5 6 7 8 9 10 11
- 31. Abnormal head CT
- 32. An order for reading scans Patient, type of scan, indication, level Quality of scan Cranial and extracranial structures (White spaces) Ventricles, cisterns, and sulci (Black spaces) Brain parenchyma Hemorrhage Lesions
- 33. Describe lesions Location Density Margins Effects Associated findings Temporal progression Differential diagnosis
- 34. Increased CT brain attenuation Hemorrhage (acute) Calcium Contrast Metal Decreased CT brain attenuation Ischemia Infection Neoplasm Trauma Edema Hemorrhage (old)