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Int. J. Hyperthermia, September 2005; 21(6): 589600 Non-invasive estimation of hyperthermia temperatures
 

Summary: Int. J. Hyperthermia, September 2005; 21(6): 589600
Non-invasive estimation of hyperthermia temperatures
with ultrasound
R. M. ARTHUR1
, W. L. STRAUBE2
, J. W. TROBAUGH1
, & E. G. MOROS2
1
Department of Electrical and Systems Engineering, Washington University School of Engineering,
St. Louis, Missouri, USA and 2
Department of Radiation Oncology, Washington University
School of Medicine, St. Louis, Missouri, USA
(Received 8 November 2004; revised 25 January 2005; accepted 28 April 2005)
Abstract
Ultrasound is an attractive modality for temperature monitoring because it is non-ionizing, convenient,
inexpensive and has relatively simple signal processing requirements. This modality may be useful
for temperature estimation if a temperature-dependent ultrasonic parameter can be identified, mea-
sured and calibrated. The most prominent methods for using ultrasound as a non-invasive thermo-
meter exploit either (1) echo shifts due to changes in tissue thermal expansion and speed of sound
(SOS), (2) variation in the attenuation coefficient or (3) change in backscattered energy from

  

Source: Arthur, R. Martin - Department of Electrical and Systems Engineering, Washington University in St. Louis

 

Collections: Biology and Medicine; Engineering