Symbol 5693 from IEC 60417 - Title/Meaning: Ultrasound image, M mode Function/description: To identify the control or the indicator to represent an M mode ultrasound image.
Additional information: 
M = time motion
Published in: Amendment 2, 2002,3C/452/FDIS,62A/228/CDV
Own work using: iso.org/obp/graphics/grs/72ecbf23-2ff0-4a8e-a250-bdbb8703622f 200.png
Vectorization:  Mrmw