Symbol 5688 from IEC 60417 - Title/Meaning: Ultrasound image, dual-image Function/description: To identify the control or the indicator to select two adjacent ultrasound images on the monitor.
Additional information: 
This symbol is used independently of the actual scan-form
Published in: Amendment 2, 2002,3C/452/FDIS,62A/228/CDV
Own work using: iso.org/obp/graphics/grs/2f5e1d95-b200-4815-be29-25ad26f27bf6 200.png
Vectorization:  Mrmw