Sonographic transducer performance cannot be evaluated with clinical images

AJR. American Journal of Roentgenology
C C JaffeE Mannes

Abstract

A wide variety of in vitro tests, some too sophisticated to perform in a clinical setting, is available to provide information on the performance of sonographic transducers. However, it is a common belief among many clinicians that clinically generated in vivo images are a necessary and sufficient test of sonographic image quality. In order to examine the sensitivity and reliability of quality judgments made from clinical images, some transducers that failed elaborate in vitro tests were used to create clinical scans. In a discrimination test between clinical images created by normal and abnormal transducers, a panel of experienced sonographers was unable to consistently identify scans made by transducers with major flaws in the beam uniformity when the defect occurred only in the near field. The study confirms that rigorous in vitro tests provide unique information on transducer performance and can reveal performance flaws that are overlooked in routine clinical images.

Citations

Jul 1, 1984·Journal of the American College of Cardiology·W ZwehlS Meerbaum
Oct 24, 2008·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Mattias MårtenssonLars-Ake Brodin
Mar 13, 2018·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Larry P HoscheitHsin-Yi Weng

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