Electrochemotherapy can be usually performed in day surgery regime and in more complex cases in the operating room. Every session take about 30 minutes.
A good representation of what happens in the operating theatre is offered by the video article published by G Sersa and D Miklavcic on the Jorunal of Visualized Experiments [G Sersa e D Miklavcic (2008). Electrochemotherapy of Tumours. JoVE. 22. http://www.jove.com/index/Details.stp?ID=1038, doi: 10.3791/1038].