department of neurology  
  stroke center, NI entrance  
  Telephone: 212 305-1710 || Address: The Neurological Institute of New York, 710 West 168th Street, 6th Floor, New York, NY 10032  
 
 
 

DOPPLER NEUROSONOLOGY LABORATORY




Location: 710 W 168th St, NI-6, New York, NY, 10032
Tel: (212) 305-8034



Medical Director: Dr. Randolph Marshall, Division Head
Founder: Dr. J.P. Mohr
Technical Director/Lab Supervisor: Sam Trocio



Stroke Center, Doppler Neurosonology Laboratory Group Photo

The Doppler Neurosonology Laboratory

provides a full line of neurovascular Doppler services. These clinical ultrasound services are integrated within Division of Stroke and Critical Care in providing a state-of-the-art ultrasound imaging of the carotid, vertebral, and subclavian arteries as well as Circle of Willis. Imaging of these vascular segments is combined with the functional testing of blood flow and assessments of vasoreactive capacity of the brain. Having all sonographic services offered within the Department provide patients with a comprehensive diagnosis and non-invasive follow-up of various vascular treatments and procedures (patients' guide).

Members of our Laboratory team are leaders in the neurosonology field, not only in the U.S., but also internationally. The Doppler Neurosonology Laboratory is accredited by the Intersocietal Commission for the Accreditation of Vascular Laboratories (ICAVL). We are committed to providing our patients with the highest level of care through superior expertise, cutting edge technology and adhering to strict Quality Assurance standards. Our activities also include extensive research and development (research Doppler lab), education and training.

The following procedures are available in our Doppler Neurosonology Laboratory:

EXTRACRANIAL DOPPLER



Carotid Duplex Ultrasound and Color/Power Doppler



Carotid Duplex Ultrasound and Color/Power Doppler A complete color and B-mode imaging of the carotid artery wall andsurroundstructures combined with pulsed Doppler measures the blood flow velocities. Power Doppler is several times more sensitive than color Doppler, and therefore can help to obtain pictures that are difficult or impossible from standard color Doppler.

Vertebral Duplex Ultrasound and Color/Power Doppler



A complete color and B-mode imaging of the vertebral arteries and combined with color and power Doppler measures the blood flow velocities.

Carotid intima-media thickness (IMT)



Carotid intima-media thickness (IMT)A high-resolution B-mode imaging and automated edge-detection of the carotid artery wall thickness may help to estimate individual vascular risk and follow-up the effects of the various "anti-atherosclerotic" therapies.


TRANSCRANIAL DOPPLER



Transcranial Doppler (TCD)



A non invasive ultrasound technology used to evaluate blood flow velocity in the major basal intracranial arteries.

Bilateral Transcranial Doppler (TCD) monitoringBilateral Transcranial Doppler (TCD) monitoring 2

Transcranial Doppler (TCD) 2

Bilateral Transcranial Doppler (TCD) monitoring



This technique provides continued surveillance of the TCD waveforms during various procedures, e.g. during the carotid endarterectomy in order to ensure adequate perfusion of the middle cerebral arteries and prevent intra-operative and early postoperative cerebral infarction.

Bilateral Transcranial Doppler (TCD) - CO2 vasoreactivity test



A non-invasive method for assessment of cerebral vasoreactive reserve by bilateral simultaneous TCD recordings from both middle cerebral arteries and a vasodilatatory challenge with inhalation of a 5% air/carbon dioxide mixture.

Bilateral Transcranial Doppler (TCD) - CO2 vasoreactivity test

TCD - High Intensity Transient Signals (HITS) test with and without IV microbubble injections

TCD - High Intensity Transient Signals (HITS) test with and without IV microbubble injections Transcranial Doppler technique that helps the classification and quantification of intracranial emboli by investigating the appearance of HITS in the TCD waveform as indicators of circulating microemboli, or for presence of a patent foramen ovale (or other right to left intracardiac shunts) in absence of other embolic sources.

Transcranial Color Coded Duplex Sonography (TCCD)



TCCS is a newer technique that permits the real-time visualization of the intracranial vascular anatomy and blood flow dynamics.

Transcranial Color Coded Duplex Sonography (TCCD)Transcranial Color Coded Duplex Sonography (TCCD) 2
stroke

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Copyright © 2008 Division of Stroke, Department of Neurology, Columbia University Medical Center, New York || The Neurological Institute of New York
Affiliated with New York-Presbyterian Hospital || Last updated: May 20, 2013 |
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