Arnold-Chiari malformation MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

There are no MRI findings associated with [disease name].

OR

[Location] MRI may be helpful in the diagnosis of [disease name]. Findings on MRI suggestive of/diagnostic of [disease name] include [finding 1], [finding 2], and [finding 3].

OR

There are no MRI findings associated with [disease name]. However, a MRI may be helpful in the diagnosis of complications of [disease name], which include [complication 1], [complication 2], and [complication 3].

MRI

There are no MRI findings associated with [disease name].

OR

[Location] MRI may be helpful in the diagnosis of [disease name]. Findings on MRI suggestive of/diagnostic of [disease name] include:

• [Finding 1]
• [Finding 2]
• [Finding 3]

OR

There are no MRI findings associated with [disease name]. However, a MRI may be helpful in the diagnosis of complications of [disease name], which include:

• [Complication 1]
• [Complication 2]
• [Complication 3]

MRI

• MRI is the imaging modality of choice to evaluate for a Chiari I malformation. MRI findings:
  • Cerebellar tonsillar herniation
  • Wedge shaped tonsils
  • Syringohydromyelia
  • Small posterior fossa
  • Obstructive hydrocephalus
  • Brainstem anomalies
• Tonsillar displacement is measured from the basion-opisthion line on a sigittal image.
• Herniation is usually at least 5mm, though patients with 3-5mm herniation may also have the malformation.
• MRI CSF flow studies may prove to be helpful and are currently under investigation.

• 
  Sag T2
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  Sag T1
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  Sag T1
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  Sag T1
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  Sag T2
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  Ax T2
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  Ax T2
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  Ax T2
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  Brain: Arnold Chiari I; T1 (MRI)
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  Brain: Arnold Chiari I, with Hydromyelia of Cervical Spinal Cord; T1 (MRI)
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  Brain: Arnold Chiari II, with Towering of The Cerebellum and Wide Tentorial Incisure; T1 (MRI)
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  Brain: Arnold Chiari II, with Fenestrated Falx Cerebri and Interdigitating Gyri; T2 (MRI)
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  Brain: Arnold Chiari II, with Tectal Beaking and Large Massa Intermedia and Stenogyria; T1 (MRI)
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  Brain: Arnold Chiari Type II with Medullary Spur and Kink (MRI)
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  Brain: Arnold Chiari II, with Hypoplastic Corpus Callosum; T1 (MRI)
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  Brain: Arnold Chiari II, with Cerebellar Hemispheres that Creep Anteriorly Around the Brain Stem; T1 (MRI)
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  BRAIN: ARNOLD CHIARI II (MRI)
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  BRAIN: ARNOLD CHIARI II WITH ELONGATED FOURTH VENTRICLES AND STENOGYRIA; T1 (MRI)
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  BRAIN: ARNOLD CHIARI II WITH HYPOPLASTIC CORPUS CALLOSUM AND STENOGYRIA; T1 (MRI)
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  BRAIN: ARNOLD CHIARI II WITH REPAIRED MYELOMENINGOCELE AND TETHERED SPINAL CORD; T1 (MRI)
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  BRAIN: ARNOLD CHIARI TYPE IV; T1 (MRI)
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  BRAIN: ARNOLD CHIARI TYPE IV; T1 (MRI)
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  BRAIN: ARNOLD CHIARI MALFORMATION II; 1/2 PCMC (MRI)
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  BRAIN: ARNOLD CHIARI MALFORMATION II, HERNIATED CEREBELLAR TONSIL; 1/2 PCMC - ARROW (MRI)
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  SPINAL CORD: ARNOLD CHIARI MALFORMATION II; 2/2 PCMC (MRI)
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  SPINAL CORD: ARNOLD CHIARI MALFORMATION II; 2/2 PCMC - ARROW (MRI)
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  BRAIN: ARNOLD CHIARI MALFORMATION; 1/3 T2 (MRI)
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  BRAIN: ARNOLD CHIARI MALFORMATION; 1/3 - ARROW T2 (MRI)
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  BRAIN: ARNOLD CHIARI MALFORMATION; 2/3 T2 (MRI)

References

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