Medical devices for measuring cerebral blood flow; medical devices measuring cerebral blood flow to assess medical conditions; medical devices measuring cerebral blood flow to assess neurological conditions; medical devices measuring cerebral blood flow to enable treatment of neurological conditions; medical devices for ultrasonography; medical devices, namely, transcranial doppler ultrasound devices; medical imaging devices for the brain; medical devices for automated diagnosis of medical conditions; medical ultrasound apparatus; diagnostic headsets for medical use for assessing medical conditions, for assessing neurological conditions, and for measuring cerebral blood flow; medical devices, namely, diagnostic headsets for assessing medical conditions, for assessing neurological conditions, and for measuring cerebral blood flow; kits for a transcranial doppler ultrasound scan comprised of medical ultrasound apparatus; medical devices with ultrasound apparatus for assessing neurological conditions; medical devices with ultrasound apparatus for measuring cerebral blood flow