It is an age-old question - short or long axis? Using ultrasound guidance for internal jugular vein cannulation is now fairly standard. There are a lot of opinions regarding if it is best to visualize the target in short axis (cross section) or long axis (parallel to the vein). There are certainly benefits to both. This episode features a prospective randomized trial that attempts to put an end to this debate. https://www.ultrasoundgel.org/85 https://www.ncbi.nlm.nih.gov/pubmed/31230925