Ackah, Joseph Amihere, et al. “Cerebrovascular Reactivity Metrics As Predictors of Cognitive Performance in Healthy Ageing: Insights from Transcranial colour‑coded Ultrasound”. The Ultrasound Journal, vol. 17, no. 1, Oct. 2025, p. 49, https://doi.org/10.1186/s13089-025-00445-1.