Title :
Acoustic transmission losses and field alterations due to human scalp hair
Author :
Raymond, Scott B. ; Hynynen, Kullervo
Abstract :
Hair is a potential transmission barrier for diagnostic and therapeutic ultrasound. We tested hair phantoms for insertion losses and field effects at 0.27-2.8 MHz. The negligible losses observed below 0.5 MHz suggest that, at such frequencies, hair removal is unnecessary for low-power imaging or therapeutic applications.
Keywords :
biomedical ultrasonics; losses; patient treatment; phantoms; 0.27 to 2.8 MHz; acoustic transmission losses; diagnostic ultrasound; field alterations; hair phantoms; human scalp hair; insertion losses; low-power imaging; therapeutic ultrasound; transmission barrier; Frequency; Hair; Head; Humans; Imaging phantoms; Insertion loss; Propagation losses; Protocols; Scalp; Ultrasonic imaging; Acoustics; Computer Simulation; Energy Transfer; Hair; Humans; Models, Biological; Radiometry; Scattering, Radiation; Ultrasonics;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2005.1509801
