ultrasound (US, UTZ)

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The use of high frequency sound waves (1.6-10 MHz) in medical imaging. Deep structures may be delineated by measuring the reflection or transmission of ultrasonic waves. The ultrasound image displays in a single plane at a time; however, computer calculations allow for 2 dimensional real-time imaging. Real-time imaging displays motion, doppler displays flow.

1971 pulsed doppler (M-mode - movement)

1974 B mode (brightness) 'Duplex scanner' M & B modes

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  1. Introduction to Clinical Imaging, Radiology Syllabus, UCSF, 1993
  2. 2.0 2.1 Journal Watch 25(2):16-17, 2005 Newnham JP, Doherty DA, Kendall GE, Zubrick SR, Landau LL, Stanley FJ. Effects of repeated prenatal ultrasound examinations on childhood outcome up to 8 years of age: follow-up of a randomised controlled trial. Lancet. 2004 Dec 4;364(9450):2038-44. PMID: https://www.ncbi.nlm.nih.gov/pubmed/15582061
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