Do you have a HCU and perform HPDI ?
Ultraschall in der Medizin - European Journal of Ultrasound · 2012
If you are worried now and did not understand anything, have a look to the latest list of medical ultrasound abbreviations OeGUM has been published (Acronym/US |Vers.2). More than 400 abbreviations have been collected as fast reference on tablets or e-readers ( www.oegum.at |Technique|Guidelines).