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Ethylene glycol‐water mixtures for use in ultrasound test objects
Author(s) -
Goldstein Albert,
Langrill Lawrence N.
Publication year - 1979
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870070610
Subject(s) - ethylene glycol , ultrasound , diffraction , medicine , materials science , optics , organic chemistry , radiology , chemistry , physics
Ethylene glycol—water mixtures have been found suitable for use in ultrasound test objects. A plot of the required percentage of ethylene glycol with room temperature for an acoustic velocity of 1540 m/sec is presented to aid the clinical user. The velocity measurements performed are shown to be dominated by near‐field transient diffraction effects. A 30 percent ethylene glycol—water mixture has been found to have a constant acoustic velocity of 1638 ± 3.5 m/sec over a wide temperature range (15.6°C–38.4°C). This mixture is suitable for a test object velocity standard. Proper use of the A.I.U.M. 100‐mm test object is discussed.