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Temperature Rise Generated by Ultrasound in the Presence of Contrast Agent

✍ Scribed by Junru Wu

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
313 KB
Volume
24
Category
Article
ISSN
0301-5629

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✦ Synopsis

Temperature elevation vs. time generated by a focused Gausssian ultrasound beam in the presence of contrast agents has been calculated using a perfect absorbing disc model. The results suggest that, if the contrast agent (Albunex) is introduced into the body intravenously, the temperature rise in the heart, which is 4.5 cm from the transducer, generated by 110-mW (the corresponding acoustic intensity at the transducer front surface is 0.4 W/cm 2 ) 2-MHz ultrasound is about 2Β°C in 10 s. The relationship between temperature rise and the blood perfusion, acoustic power and focal length is discussed.

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