Abstract
Objective: To determine normal ranges for traditional transcranial Doppler (TCD) measurements for two age groups (14–19 and 20–29 years) and compare to existing literature results. The development of a normal range for TCD measurements will be required for the development of diagnostic and prognostic tests in the future.
Materials and Methods: We performed TCD on the middle cerebral artery on 147 healthy subjects aged 18.9 years (SD = 2.1) and calculated mean cerebral blood flow velocity (mCBFV) and pulsatility index (PI). The study population was divided into two age populations (14–19 and 20–29 years).
Results: There was a significant decrease in PI (p = 0.015) for the older age group with no difference in mCBFV.
Conclusion: Age-related, normal data are a prerequisite for TCD to continue to gain clinical acceptance. Our correlation of age-related TCD findings with previously published results as the generally accepted “gold standard” underlines the validity and sensitivity of this ultrasound method.
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Acknowledgments
This work was supported partially by the National Institutes of Health Small Business Innovation Research (NINDS 1R43NS092209-01) and private funds from Neural Analytics Inc.
Conflicts of interest statement
Solventa Krakauskaite – No Conflict of interest, Corey Thibeault – Employee and shareholder of Neural Analytics, James LaVangie – Employee and shareholder of Neural Analytics, Mateo Scheidt – Employee and shareholder of Neural Analytics, Leo Martinez – Employee and shareholder of Neural Analytics, Danielle Seth-Hunter – Employee and shareholder of Neural Analytics, Amanda Wu – Employee and shareholder of Neural Analytics, Michael O’Brien – Employee and shareholder of Neural Analytics, Fabien Scalzo – Contractor and shareholder of Neural Analytics, Seth J.Wilk – Employee and shareholder of Neural Analytics, Robert B. Hamilton – Employee and shareholder of Neural Analytics.
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Krakauskaite, S. et al. (2018). Normative Ranges of Transcranial Doppler Metrics. In: Heldt, T. (eds) Intracranial Pressure & Neuromonitoring XVI. Acta Neurochirurgica Supplement, vol 126. Springer, Cham. https://doi.org/10.1007/978-3-319-65798-1_53
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