Temperature mapping near the surface of ultrasound transducers using
susceptibility- compensated magnetic resonance imaging.
Authors Webb AG, Neuberger T, Park EJ, Smith N
Submitted By Nadine Smith on 3/31/2010
Status Published
Journal IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Year 2009
Date Published 6/1/2009
Volume : Pages 56 : 1145 - 1150
PubMed Reference 19574122
Abstract Magnetic resonance imaging (MRI)-based temperature mapping very close to the
surface of an ultrasound transducer is not possible due to the large magnetic
susceptibility- induced image artifacts that arise from the materials used in
transducer construction. Here, it is shown in phantoms that
"susceptibility-compensated" MRI sequences can be used to measure thermal
increases approximately 1 mm from the surface of a 4-element cymbal array
transducer, which has been used widely for noninvasive transdermal drug
delivery. The estimated temperatures agree well with those measured using
thermocouples.


Investigators with authorship
NameInstitution
Nadine SmithPennsylvania State University-Penn State Main Campus

Complications