MR evaluation of Chiari I malformations at 0.15 T

Spinos, Efstathios; Laster, Dan W; Moody, Dixon M.; Ball, M. R.; Witcofski, Richard L.; Kelly, David L.

doi:10.2214/ajr.144.6.1143

Cited by 34 publications

(19 citation statements)

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“…Chiari I malformation by definition is not associated with my elomeningocele, and is not generally included in the dysraphic conditions [22], Less severe spinal deformities do occur in Chiari I, however, including Klippel-Feil, spina bifida occulta, and rarely lipomyelomeningocele [4,9]. The Chiari II malformation is always associated with myelomeningocele [16,21].…”

Section: Discussionmentioning

confidence: 99%

“…Variable elongation of the hindbrain is present in the Chiari malformations with downward herniation of tonsils, vermis, and 4th ventricle; herniation is more severe in Chiari II and III malformation [21]. Because of downward displacement of the posterior fossa structures, kinking of the brain stem at the cervicomedullary j unction is a frequent find ing in the Chiari malformation [4,16]. Tethered cord is invariably present, adherent to the neural placode at birth, and most often remaining tethered in spite of sur gical repair [20].…”

Section: Discussionmentioning

confidence: 99%

“…Tethered cord is invariably present, adherent to the neural placode at birth, and most often remaining tethered in spite of sur gical repair [20]. Syringohydromyelia is common in both the Chiari I and Chiari II malformations with an incidence of approximately 50% [4,17,19]. Diastematomyelia, split cord, and dermal sinus tracts are occa sionally identified in patients with all forms of dys raphism [10,11,14,19].…”

Section: Discussionmentioning

confidence: 99%

“…Clinical experience with mag netic resonance (MR) imaging of the spine is rapidly acumulating [1][2][3]. Reports have already appeared describing the efficacy of MR in the diagnosis of syrinx, tonsillar herniation, and diastematomyelia [4][5][6][7][8]. MR permits a unique evaluation of spinal dysraphism by taking advantage of its triplanar capability and by its ability to directly image and characterize the intraspinal contents without bony artifacts.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Resonance Evaluation of Pediatric Spinal Dysraphism

1985

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Magnetic resonance (MR) scans of 22 children with spinal dysraphism were reviewed. MR scans of the cervicothoracic spine in 12 cases revealed 10 Chiari II malformations, 1 Chiari III malformations, and 4 syringohydromyelias. Twelve MR scans of the lumbosacral region were performed demonstrating 11 tethered cords, 6 myelomeningoceles, 4 lipomyeloschises, 2 diastematomyelias, 2 syringohydromyelias, and 2 dermal sinus tracts. MR is effective in defining the relationship of the cerebellar tonsils and brainstem to the upper cervical spinal canal and in evaluating the extent ofsyringohydromyelia and the degree of cord expansion. The ability to image the spinal cord and associated paraspinal lesions directly in the sagittal and coronal planes with excellent tissue characterization allows MR to accurately diagnose and define the myriad abnormalities associated with pediatric dysraphism.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Magnetic Resonance Evaluation of Pediatric Spinal Dysraphism

1985

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“…All patients were referred with MRIs characteristic of Chiari I malformation: tonsillar herniation below a line drawn between the inferior margin of the basion, and the opisthion, or by noting a peg-like tonsillar conformation [15,16]. No patient underwent treatment prior to the surgical procedure performed by the senior authors (J.H.W., F.J.E.).…”

Section: Designmentioning

confidence: 99%

Headache and Chiari I Malformation in the Pediatric Population

et al. 1998

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There has been disagreement regarding surgical intervention in treating pediatric patients with Chiari I malformation with headache as sole complaint. Therefore, we retrospectively reviewed our experience over a 6-year period, with patients less than 5 years of age (mean = 34.8 months) with radiographically confirmed Chiari I malformation. We identified 7 patients who presented with headaches as their only complaint. The headaches varied in location and severity. All patients were treated with posterior fossa decompression and syringosubarachnoid shunt when indicated. At follow-up, all patients were noted to have rapid clinical improvement (mean = 11.6 weeks) and remain asymptomatic. Our data suggest that patients less than 5 years of age with Chiari I malformation benefit from surgical decompression when presenting with a chief complaint of headache.

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Clinical Utility of Magnetic Resonance Imaging in Pediatrics

Cohen

1986

Arch Pediatr Adolesc Med

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MR evaluation of Chiari I malformations at 0.15 T

Cited by 34 publications

References 0 publications

Magnetic Resonance Evaluation of Pediatric Spinal Dysraphism

Magnetic Resonance Evaluation of Pediatric Spinal Dysraphism

Headache and Chiari I Malformation in the Pediatric Population

Clinical Utility of Magnetic Resonance Imaging in Pediatrics

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