Analysis and interrater reliability of pB-C2 using MRI and CT: data from the Park-Reeves Syringomyelia Research Consortium on behalf of the Pediatric Craniocervical Society

Journal of Neurosurgery. Pediatrics
Todd C HankinsonRichard C E Anderson

Abstract

OBJECTIVE The distance to the ventral dura, perpendicular to the basion to C2 line (pB-C2), is commonly employed as a measure describing the anatomy of the craniovertebral junction. However, both the reliability among observers and the clinical utility of this measurement in the context of Chiari malformation Type I (CM-I) have been incompletely determined. METHODS Data were reviewed from the first 600 patients enrolled in the Park-Reeves Syringomyelia Research Consortium with CM-I and syringomyelia. Thirty-one cases were identified in which both CT and MRI studies were available for review. Three pediatric neurosurgeons independently determined pB-C2 values using common imaging sequences: MRI (T1-weighted and T2-weighted with and without the inclusion of retro-odontoid soft tissue) and CT. Values were compared and intraclass correlations were calculated among imaging modalities and observers. RESULTS Intraclass correlation of pB-C2 demonstrated strong agreement between observers (intraclass correlation coefficient [ICC] range 0.72-0.76). Measurement using T2-weighted MRI with the inclusion of retro-odontoid soft tissue showed no significant difference with measurement using T1-weighted MRI. Measurements using CT or T2-weighted...Continue Reading

References

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Sep 27, 2015·Neurosurgery Clinics of North America·Thomas RidderTodd C Hankinson

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Citations

Jun 22, 2019·Journal of Neurosurgery. Pediatrics·Jayapalli Rajiv BapurajCormac O Maher
Dec 12, 2018·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Melissa A LoPrestiSandi Lam

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