Magnetic resonance imaging of the brain
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(Redirected from MRI of brain and brain stem)
| MRI of brain and brain stem | |
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| Intervention | |
 Brain MRI |
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| ICD-10-PCS | B030ZZZ |
| ICD-9-CM | 88.91 |
| OPS-301 code: | 3-800, 3-820 |
Magnetic resonance imaging (MRI) of the brain and brain stem uses magnetic fields and radio waves to produce high quality two- or three-dimensional images of brain structures without use of ionizing radiation (X-rays) or radioactive tracers.
One advantage of MRI of the brain over computed tomography of the head is better tissue contrast,[1] and it has fewer artifacts than CT when viewing the brainstem. MRI is also superior for pituitary imaging.[2] It may however be less effective at identifying early cerebritis.[3]
In analysis of the fetal brain, MRI provides more information about gyration than ultrasound.[4]
A number of different imaging modes can be used with imaging the brain:
- T1: Cerebrospinal fluid is dark. T1 weighting is useful for visualizing normal anatomy.
- T2: CSF is light, but fat (and thus white matter) is darker than with T1. T2 is useful for visualizing pathology.[5]
- PD (proton density): CSF has a relatively high level of protons, making CSF appear bright. Gray matter is brighter than white matter.[6]
- FLAIR: useful for evaluation of white matter plaques near the ventricles.[7] It is useful in identifying demyelination.[8]
Gallery [edit]
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T1 (note CSF is dark)
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T2 tse sag 4mm rst flowrec bionerd.jpg
T2 (note CSF is light)
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Wikimedia Commons has media related to: Category:Magnetic resonance imaging of the brain |
References [edit]
- ^ Ebel, Klaus-Dietrich; Benz-Bohm, Gabriele (1999). Differential diagnosis in pediatric radiology. Thieme. pp. 538–. ISBN 978-3-13-108131-5. Retrieved 18 July 2011.
- ^ Bradley, William G.; Brant-Zawadzki, Michael; Cambray-Forker, Jane (2001-01-15). MRI of the brain. Surendra Kumar. ISBN 978-0-7817-2568-2. Retrieved 24 July 2011.
- ^ Roos, Karen L.; Tunkel, Allan R. (2010). Bacterial infections of the central nervous system. Elsevier Health Sciences. pp. 69–. ISBN 978-0-444-52015-9. Retrieved 18 July 2011.
- ^ Garel, Cathérine (2004). MRI of the fetal brain: normal development and cerebral pathologies. Springer. ISBN 978-3-540-40747-8. Retrieved 24 July 2011.
- ^ Butler, Paul; Mitchell, Adam W. M.; Ellis, Harold (2007-11-19). Applied Radiological Anatomy for Medical Students. Cambridge University Press. pp. 12–. ISBN 978-0-521-81939-8. Retrieved 18 July 2011.
- ^ Tofts, Paul (2005-09-01). Quantitative MRI of the Brain: Measuring Changes Caused by Disease. John Wiley and Sons. pp. 86–. ISBN 978-0-470-86949-9. Retrieved 18 July 2011.
- ^ Chowdhury, Rajat; Wilson, Iain; Rofe, Christopher; Graham Lloyd-Jones (2010-04-19). Radiology at a Glance. John Wiley and Sons. pp. 95–. ISBN 978-1-4051-9220-0. Retrieved 18 July 2011.
- ^ Granacher, Robert P. (2007-12-20). Traumatic brain injury: methods for clinical and forensic neuropsychiatric assessment. CRC Press. pp. 247–. ISBN 978-0-8493-8138-6. Retrieved 18 July 2011.
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