The Massachusetts General Hospital Handbook of Neurology

Authors: Flaherty, Alice W.; Rost, Natalia S.

Title: Massachusetts General Hospital Handbook of Neurology, The, 2nd Edition

Copyright 2007 Lippincott Williams & Wilkins

> Table of Contents > Imaging > Ultrasound

Ultrasound

A. Carotid and/or vertebral duplex

(AKA carotid noninvasives, CNIs): For stenoses in neck vessels. Uses B-mode and pulsed Doppler imaging.

B. Transcranial Doppler (TCD)

For stenoses in intracranial vessels. Specify anterior and/or posterior circulation TCDs when ordering. Add TCDs to CNIs if there is greater than 60% carotid stenosis on CNI. Can also help identify vasospasm, AVMs, absence of cerebral blood flow in brain death.

C. Neonatal brain ultrasound.

For bleeds: periventricular leukomalacia, and congenital malformations in pt. with an open fontanelle.