Классическое исследование брюшной полости в четырех проекциях

Focused Assessment with Sonography for Trauma (commonly abbreviated as FAST) is a rapid bedside ultrasound examination performed by radiologists, surgeons, emergency physicians and certain paramedics as a screening test for blood around the heart (pericardial effusion) or abdominal organs (hemoperitoneum) after trauma.[1]
The four classic areas that are examined for free fluid are the perihepatic space (also called Morison's pouch or the hepatorenal recess), perisplenic space, pericardium, and the pelvis. With this technique it is possible to identify the presence of intraperitoneal or pericardial free fluid. In the context of traumatic injury, this fluid will usually be due to bleeding.