A new pocket-sized transcranial ultrasound device (NeuroDop)

Comparison with standard TCD

Stella Kidwell, Neil A. Martin, Jeffrey L. Saver

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The NeuroDop is a new bedside assessment tool consisting of a continuous wave ultrasound probe attached to a stethoscope earpiece. This study was designed to compare middle cerebral artery (MCA) velocity assessment obtained with the NeuroDop versus standard transcranial Doppler (TCD). TCD technologists performed continuous wave NeuroDop studies followed by standard TCD studies on 60 subjects. Technologists recorded presence of MCA signal and estimated velocity based on NeuroDop auditory characteristics. Signal was obtained in 108 MCA vessels with the portable unit and in 112 vessels using standard TCD. For detection of patency, sensitivity was 96%, specificity 88%, positive predictive value 99%, and negative predictive value 58%. Auditorially estimated velocities from the NeuroDop strongly correlated with TCD velocity measures (r = 0.71). Categorical estimates of velocity as decreased (<37 cm/sec), normal (37-81 cm/sec), or increased (>81 cm/sec) demonstrated an accuracy rate of 85%. This novel stethoscope-continuous wave unit has excellent sensitivity in detecting presence of MCA patency. Moreover, MCA velocities can be characterized to a reasonable degree of accuracy based on NeuroDop auditory characteristics. The NeuroDop shows promise as a tool to rapidly assess and serially monitor presence and amplitude of MCA velocity and may help guide thrombolytic and other emergency management decisions in stroke patients.

Original languageEnglish (US)
Pages (from-to)91-95
Number of pages5
JournalJournal of Neuroimaging
Volume10
Issue number2
StatePublished - 2000
Externally publishedYes

Fingerprint

Middle Cerebral Artery
Equipment and Supplies
Stethoscopes
Emergencies
Stroke

Keywords

  • Brain
  • Middle cerebral artery
  • Transcranial Doppler
  • Velocity

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology
  • Neuroscience(all)
  • Radiological and Ultrasound Technology

Cite this

A new pocket-sized transcranial ultrasound device (NeuroDop) : Comparison with standard TCD. / Kidwell, Stella; Martin, Neil A.; Saver, Jeffrey L.

In: Journal of Neuroimaging, Vol. 10, No. 2, 2000, p. 91-95.

Research output: Contribution to journalArticle

@article{50aaee5d4d294866b24ad944f6a818f5,
title = "A new pocket-sized transcranial ultrasound device (NeuroDop): Comparison with standard TCD",
abstract = "The NeuroDop is a new bedside assessment tool consisting of a continuous wave ultrasound probe attached to a stethoscope earpiece. This study was designed to compare middle cerebral artery (MCA) velocity assessment obtained with the NeuroDop versus standard transcranial Doppler (TCD). TCD technologists performed continuous wave NeuroDop studies followed by standard TCD studies on 60 subjects. Technologists recorded presence of MCA signal and estimated velocity based on NeuroDop auditory characteristics. Signal was obtained in 108 MCA vessels with the portable unit and in 112 vessels using standard TCD. For detection of patency, sensitivity was 96{\%}, specificity 88{\%}, positive predictive value 99{\%}, and negative predictive value 58{\%}. Auditorially estimated velocities from the NeuroDop strongly correlated with TCD velocity measures (r = 0.71). Categorical estimates of velocity as decreased (<37 cm/sec), normal (37-81 cm/sec), or increased (>81 cm/sec) demonstrated an accuracy rate of 85{\%}. This novel stethoscope-continuous wave unit has excellent sensitivity in detecting presence of MCA patency. Moreover, MCA velocities can be characterized to a reasonable degree of accuracy based on NeuroDop auditory characteristics. The NeuroDop shows promise as a tool to rapidly assess and serially monitor presence and amplitude of MCA velocity and may help guide thrombolytic and other emergency management decisions in stroke patients.",
keywords = "Brain, Middle cerebral artery, Transcranial Doppler, Velocity",
author = "Stella Kidwell and Martin, {Neil A.} and Saver, {Jeffrey L.}",
year = "2000",
language = "English (US)",
volume = "10",
pages = "91--95",
journal = "Journal of Neuroimaging",
issn = "1051-2284",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - A new pocket-sized transcranial ultrasound device (NeuroDop)

T2 - Comparison with standard TCD

AU - Kidwell, Stella

AU - Martin, Neil A.

AU - Saver, Jeffrey L.

PY - 2000

Y1 - 2000

N2 - The NeuroDop is a new bedside assessment tool consisting of a continuous wave ultrasound probe attached to a stethoscope earpiece. This study was designed to compare middle cerebral artery (MCA) velocity assessment obtained with the NeuroDop versus standard transcranial Doppler (TCD). TCD technologists performed continuous wave NeuroDop studies followed by standard TCD studies on 60 subjects. Technologists recorded presence of MCA signal and estimated velocity based on NeuroDop auditory characteristics. Signal was obtained in 108 MCA vessels with the portable unit and in 112 vessels using standard TCD. For detection of patency, sensitivity was 96%, specificity 88%, positive predictive value 99%, and negative predictive value 58%. Auditorially estimated velocities from the NeuroDop strongly correlated with TCD velocity measures (r = 0.71). Categorical estimates of velocity as decreased (<37 cm/sec), normal (37-81 cm/sec), or increased (>81 cm/sec) demonstrated an accuracy rate of 85%. This novel stethoscope-continuous wave unit has excellent sensitivity in detecting presence of MCA patency. Moreover, MCA velocities can be characterized to a reasonable degree of accuracy based on NeuroDop auditory characteristics. The NeuroDop shows promise as a tool to rapidly assess and serially monitor presence and amplitude of MCA velocity and may help guide thrombolytic and other emergency management decisions in stroke patients.

AB - The NeuroDop is a new bedside assessment tool consisting of a continuous wave ultrasound probe attached to a stethoscope earpiece. This study was designed to compare middle cerebral artery (MCA) velocity assessment obtained with the NeuroDop versus standard transcranial Doppler (TCD). TCD technologists performed continuous wave NeuroDop studies followed by standard TCD studies on 60 subjects. Technologists recorded presence of MCA signal and estimated velocity based on NeuroDop auditory characteristics. Signal was obtained in 108 MCA vessels with the portable unit and in 112 vessels using standard TCD. For detection of patency, sensitivity was 96%, specificity 88%, positive predictive value 99%, and negative predictive value 58%. Auditorially estimated velocities from the NeuroDop strongly correlated with TCD velocity measures (r = 0.71). Categorical estimates of velocity as decreased (<37 cm/sec), normal (37-81 cm/sec), or increased (>81 cm/sec) demonstrated an accuracy rate of 85%. This novel stethoscope-continuous wave unit has excellent sensitivity in detecting presence of MCA patency. Moreover, MCA velocities can be characterized to a reasonable degree of accuracy based on NeuroDop auditory characteristics. The NeuroDop shows promise as a tool to rapidly assess and serially monitor presence and amplitude of MCA velocity and may help guide thrombolytic and other emergency management decisions in stroke patients.

KW - Brain

KW - Middle cerebral artery

KW - Transcranial Doppler

KW - Velocity

UR - http://www.scopus.com/inward/record.url?scp=0034000593&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034000593&partnerID=8YFLogxK

M3 - Article

VL - 10

SP - 91

EP - 95

JO - Journal of Neuroimaging

JF - Journal of Neuroimaging

SN - 1051-2284

IS - 2

ER -