Magnetic resonance imaging of Chiari malformations.
The authors describe the features of magnetic resonance (MR) images of Chiari type I and II malformations and present four illustrative cases. Downward displacement of the posterior fossa was more pronounced with type II than type I. A variety of intracranial anomalies were associated with the Chiari type II malformation, whereas type I was mainly associated with syringomyelia and craniovertebral changes. MR imaging is useful in the diagnosis of intracranial anomalies and those situated at the craniovertebral junction, including Chiari malformations.
Yamanaka
M
M
Department of Neurosurgery, Hiroshima University School of Medicine.
Uozumi
T
T
Sakoda
K
K
Kuwabara
S
S
Mikami
T
T
Sumida
M
M
Hasada
J
J
Hatayama
T
T
Kanazawa
J
J
Kajima
T
T
D000328:Adult; D001139:Arnold-Chiari Malformation / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013595:Syringomyelia / Q000175:diagnosis / Q000209:etiology