The four points of probe placement in Focused Abdominal Sonogram for trauma (FAST) in blunt thoraco-abdominal trauma are -
Epigastrium, (R) hypochondrium, (L) Lower chest, hypogastrium
Epigastrium, (R) and (L) Hypochondria, (R) Iliac fossa
Epigastrium, (R) and (L) Lumbar regions, hypogastrium
Hypogastrium, (R) and (L) Lumbar regions, (R) lower chest
Epigastrium, (R) and (L) Lumbar regions, hypogastrium