Background/Aims: Doppler sonography has been used to assess hepatic arterial perfusion in a number of published reports. However, adequate validation studies are available for neither the transcutaneous nor the intravascular Doppler approach.
Bitcoin Production Will Drop By Half In July, How Will That Affect The Price? One of the most fascinating aspects of the Bitcoin narrative is the trajectory of its price. Since its birth seven years ago, this abstract currency that only exists as computer code and/or in a small but rabid collective conscious has gone from completely worthless to almost $450 for a single Bitcoin.
Since then, the value of a single Bitcoin has fluctuated wildly, reaching a high of around $1,000 in late 2013 before falling to less than half that level, and then rebounding in 2016. What exactly is Bitcoin, and how does it work?