caa a22 4500 477079393 CHVBK 20180405111446.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF01508160 doi (NATIONALLICENCE)springer-10.1007/BF01508160 Flattened inferior vena cava: A normal finding on unenhanced abdominal computed tomographic scan [Elektronische Daten] [Ronald Wachsberg, Charles Levine, Stephen Baker] Flattening of the infrahepatic inferior vena cava (IVC) on postcontrast computed tomographic (CT) scans has been reported as a sign of severe hypovolemia. The significance of this finding on unenhanced CT scans, however, has not been reported. We retro-spectively studied 60 consecutive outpatient abdominal CT scans in which both unenhanced and postcontrast sequences were performed. Flattening of the infrahepatic IVC on unenhanced CT images was noted in six patients (10%) without evidence of hypovolemia or extrinsic IVC compression. The degree of IVC fullness increased in 43 study patients overall (72%) after contrast administration. We propose several mechanisms for postcontrast IVC distention and conclude that a flattened infrahepatic IVC on unenhanced CT scans does not indicate hypovolemia in the absence of other suggestive clinical or CT findings. American Society of Emergency Radiology, 1996 Abdomen, CT nationallicence CT, contrast media nationallicence Trauma nationallicence Wachsberg Ronald Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut Levine Charles Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut Baker Stephen Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut Emergency Radiology Springer-Verlag 3/1(1996-01-01), 16-19 1070-3004 3:1<16 1996 3 10140 https://doi.org/10.1007/BF01508160 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01508160 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wachsberg Ronald Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut NATIONALLICENCE 700 1- Levine Charles Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut NATIONALLICENCE 700 1- Baker Stephen Department of Radiology, University Hospital, 150 Bergen Street, Room C-320, 07103, Newark, NJ aut NATIONALLICENCE 773 0- Emergency Radiology Springer-Verlag 3/1(1996-01-01), 16-19 1070-3004 3:1<16 1996 3 10140 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer