TCD Description

Trans cranial Doppler is a health technology diagnostic and monitoring tool using ultrasound technique to access cerebral blood flow (CBF) or velocity in the brain using computerized sound waves-shapes and pitch and images. Medical professional use these images for diagnostic, surgical and preventive techniques. This method is low cost, and the least intrusive and safe for all populations from infants to aging adults. It is a convenient way to monitor patients due to its portability for bedside monitoring. It can be used inpatient and in outpatient settings as well.

external image TCDsim_stenosis.jpg


In the area of Health Information Technology, TCD is a neuroscience tool that utilizes Doppler data to diagnosis, predict and treat neurological or cognitive functioning. Trans cranial Doppler is the method of choice for evaluation of stokes or cerebrovascular diseases such as carotid, cerebral emboli, head trauma, arteriovenous malformations stenosis/occlusion (Topcuoglu 2012).

TCD is also increasing in research and prediction application in diseases such as dementia, sickle cell, Alzheimer and Parkinson and assessing brain death. A major health information technology tool that is used with TCD is dopOSCCI. This software tool processes and records the trans cranial Doppler data and gives statistical reports, visual data graphs and individualized reports in a file such as Excel (Badcock et al 2012). This analysis tool has enhanced the TCD results and includes not only individual results but can store information for comprehensive group and behavioral summaries.
Another application of TCD is in BCI, Brain-computer interfaces. BCI technology aids individuals who have cognitive abilities but severe mobile and non-verbal disabilities to communicate through TCD monitoring signals (Myrden et al 2011). TCD technology technique provides a non-invasive and portable way to produce cognitive and sensory signals for future language rehabilitation for neurological disorders.

Related Terms

E-health Connect image Exchange is a Health Information Exchange tool providing images from radiology such as TCD.

DopOSCCI- software package batch processing and analyzing TCD data

BCI Brain-computer Interface is hardware and software use of imaging technology to assess and record brain signals or mental activity for communication purposes.

CBF Cerebral Flow is measured by TCD to assess the blood flow ability to brain tissue through the arteries.


American Institute of Ultrasound in Medicine

Works Cited

Badcock, N.A., Holt, G., Holden, A., Bishop, D (2012). DopOSCCI: A functional trans cranial Doppler ultrasonography summary suite for the assessment of cerebral lateralization of cognitive function. Journal of Neuroscience Methods. 204(2). Retrieved from doi:10.1016/j.jneumeth.2011.11.018
Myrden,A.J.B., Kushki,A., Sejdic,E., Guerguerian,A., Chau,T. (2011). A Brain-Computer Interface based on bilateral transcranial doppler ultrasound. PLoS One 6(9) Retrieved from doi:10.1371/journal.pone.0024170

Topcuoglu,M.A., (2012) Transcranial Doppler ultrasound in neurovascular diseases: diagnostic and therapeutic aspects. Journal of Neurochemistry 123(2) 39-51 Retrieved from: