Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
463-04-004 ISMRM Abstract

Cerebellar Tonsil Descent and Persistence of Cognitive and Balance Deficits and Headache after Mild Traumatic Brain Injury

Primary: Neuro - Traumatic Brain Injury
Secondary: Neuro - Spinal Cord
463-04-004 · Advanced Microstructural Imaging of White Matter and Traumatic Brain Injury · Tuesday, 12 May, 2:35 PM–3:30 PM · Digital Posters Row D
Keywords: Diagnosis/Prediction Chiari Malformation 3T MRI Interval-censored model
Accepted
Cheryl Hightower1,2, Justin Sigmund1, Alan Rodriguez 2, Priya Santhanam2, Travis H Snyder1,2,3
1Touro University Nevada, United States of America
2Imgen, LLC, United States of America
3Simonmed, United States of America
Presenting Author: Alan Rodriguez

Synopsis

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References

1. 1. Aboulezz AO, Sartor K, Geyer CA, Gado MH. Position of cerebellar tonsils in the normal population and in patients with Chiari malformation: a quantitative approach with MR imaging. J Comput Assist Tomogr. 1985;9(6):1033-6. doi: 10.1097/00004728-198511000-00005. [doi]
2. 2. Chiari H. Ueber veränderungen des kleinhirns infolge von hydrocephalie des grosshirns1. DMW-Deutsche Medizinische Wochenschrift. 1891;17(42):1172-5. doi:10.1055/s-0029-1206803. [doi]
3. 3. Mueller DM, Oro' JJ. Prospective analysis of presenting symptoms among 265 patients with radiographic evidence of Chiari malformation type I with or without syringomyelia. J Am Acad Nurse Pract. 2004;16(3):134-8. doi: 10.1111/j.1745-7599.2004.tb00384.x [doi]
4. 4. Freeman MD, Rosa S, Harshfield D, Smith F, Bennett R, Centeno CJ, et al. A case-control study of cerebellar tonsillar ectopia (Chiari) and head/neck trauma (whiplash). Brain Injury. 2010;24(7-8):988-94. doi: 10.3109/02699052.2010.490512. [doi]
5. 5. Lawrence BJ, Urbizu A, Allen PA, Loth F, Tubbs RS, Bunck AC, et al. Cerebellar tonsil ectopia measurement in type I Chiari malformation patients show poor inter-operator reliability. Fluids Barriers CNS. 2018;15(1):33. doi: 10.1186/s12987-018-0118-1. [doi]
6. 6. Anderson-Bergman C. icenReg: Regression models for interval censored data in R. J Stat Softw. 2017;81(12):1-23.
7. 7. de Hond AAH, Steyerberg EW, van Calster B. Interpreting area under the receiver operating characteristic curve. Lancet Digit Health. 2022;4(12):e853-e5. doi: 10.1016/S2589-7500(22)00188-1. [doi]
8. 8. Mikulis DJ, Diaz O, Egglin TK, Sanchez R. Variance of the position of the cerebellar tonsils with age: preliminary report. Radiology. 1992 Jun;183(3):725-8. doi: 10.1148/radiology.183.3.1584927. [doi]

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http://echo.ismrm.org/p/ISMRM2026/463-04-004