Nuclear Magnetic Resonance (NMR) Imaging of Arnold–Chiari Type I Malformation with Hydromyelia

DeLaPaz, Robert L.; Brady, Thomas J.; Buonanno, Ferdinando S.; New, Paul F. J.; Kistler, J P; McGinnis, B. D.; Pykett, I L; Taveras, J M

doi:10.1097/00004728-198302000-00022

Cited by 42 publications

(3 citation statements)

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“…MR imaging has proven to be an excellent technique for visualizing the spinal cord . It is considered the procedure of choice for the diagnosis of syringohydromyelia and the Chiari malformation [11][12][13][14][15][16][17], and has proven valuable in the diagnosis of multiple sclerosis involving the spinal cord [18][19][20], spinal canal stenosis [21][22][23] , tumors of the spinal cord and spinal canal [1 9, 21, 22, 24-26], spinal dysraphism [24 , 27] , and vertebral osteomyelitis [28] . Some authors consider MR to be equal or superior to CT or myelography for the diagnosis of disk herniation [29][30][31] , although others do not share this view [32 , 33].…”

mentioning

confidence: 99%

The role of MR imaging in evaluating metastatic spinal disease

Smoker

Godersky

Knutzon

et al. 1987

American Journal of Roentgenology

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mentioning

confidence: 99%

The role of MR imaging in evaluating metastatic spinal disease

Smoker

Godersky

Knutzon

et al. 1987

American Journal of Roentgenology

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“…Since its debut as a diagnostic tool in the mid-1980s, MRI rapidly replaced myelography and became the most widely used neuroimaging technique in neurology and neurosurgery. To our knowledge, the first studies on MRI scanning in patients with CMs were published in the 1980s [42,47,48] and used low-strength magnets (0.15-0.5 T). These studies also revealed that some asymptomatic patients or healthy people may have a mild degree of TH [47,49,50].…”

Section: Mri: the Breakthrough For The Diagnosis Of Chiari Malformationsmentioning

confidence: 99%

A Critical Update of the Classification of Chiari and Chiari-like Malformations

Sahuquillo,

Moncho,

Ferré

et al. 2023

JCM

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Chiari malformations are a group of craniovertebral junction anomalies characterized by the herniation of cerebellar tonsils below the foramen magnum, often accompanied by brainstem descent. The existing classification systems for Chiari malformations have expanded from the original four categories to nine, leading to debates about the need for a more descriptive and etiopathogenic terminology. This review aims to examine the various classification approaches employed and proposes a simplified scheme to differentiate between different types of tonsillar herniations. Furthermore, it explores the most appropriate terminology for acquired herniation of cerebellar tonsils and other secondary Chiari-like malformations. Recent advances in magnetic resonance imaging (MRI) have revealed a higher prevalence and incidence of Chiari malformation Type 1 (CM1) and identified similar cerebellar herniations in individuals unrelated to the classic phenotypes described by Chiari. As we reassess the existing classifications, it becomes crucial to establish a terminology that accurately reflects the diverse presentations and underlying causes of these conditions. This paper contributes to the ongoing discussion by offering insights into the evolving understanding of Chiari malformations and proposing a simplified classification and terminology system to enhance diagnosis and management.

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“…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%

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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Nuclear Magnetic Resonance (NMR) Imaging of Arnold–Chiari Type I Malformation with Hydromyelia

Cited by 42 publications

References 0 publications

The role of MR imaging in evaluating metastatic spinal disease

The role of MR imaging in evaluating metastatic spinal disease

A Critical Update of the Classification of Chiari and Chiari-like Malformations

Magnetic Resonance Evaluation of Pediatric Spinal Dysraphism

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