Ethylene glycol-water mixtures for use in ultrasound test objects

✍ Scribed by Albert Goldstein; Lawrence N. Langrill

• Book ID: 102887678
• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 591 KB
• Volume: 7
• Category: Article
• ISSN: 0091-2751
• DOI: 10.1002/jcu.1870070610

✦ Synopsis

Abstract

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.