title: Invited commentary.
mesh_terms: D000792:Angiography / Q000379:methods*; D003422:Critical Care / Q000379:methods*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging* / Q000517:prevention & control*; D006801:Humans; D008297:Male; D061330:Multidetector Computed Tomography / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*