caa a22 4500 477079407 CHVBK 20180405111446.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF01508161 doi (NATIONALLICENCE)springer-10.1007/BF01508161 Helical computed tomography of liver injuries: A trial of dual phase imaging [Elektronische Daten] [Diego Nuñez Jr., John Wester, Kimberley Lentz, Marco Amendola] This study was performed to evaluate whether consecutive arterial phase and portal venous phase scans of the upper abdomen are contributory in the evaluation of the liver in patients with blunt abdominal trauma. The purpose of the study was to determine whether such dual acquisition using helical computed tomography (HCT) provides improved definition of injuries and significant information about the dynamics of posttraumatic hemorrhage. During a 10-month period, all patients referred for evaluation of blunt abdominal trauma were scanned using a dual phase imaging technique. Two consecutive and comparable scan clusters were programmed to study the upper abdomen, with a slice collimation of 10 mm and a 1∶1 pitch. Intravenous contrast medium was delivered at a rate of 2 ml/sec for a total of 125 ml, with scan delays of 30 and 70 seconds (arterial and venous phases of hepatic enhancement). Thirty-two patients with hepatic lacerations were encountered, and the images from both acquisitions were compared and graded according to lesion conspicuity. The presence of contrast medium extravasation associated with parenchymal injuries was also recorded. In 23 (72%) of the 32 patients, the liver injuries were better defined in the portal venous phase, and in eight (25%) patients, the lesions were equally shown in both phases. In only one case, the lesion was better demonstrated in the arterial phase. Contrast medium extravasation was noted in two patients at the site of liver laceration. In three additional cases, contrast medium extravasation was also noted in associated splenic injuries. In all of these patients, the extravasation (bleeding laceration) was seen only in the images corresponding to the portal venous phase. Dual phase HCT of the upper abdomen does not provide significant additional information in the evaluation of patients with liver injuries resulting from blunt abdominal trauma. With a single scan cluster through the upper abdomen after a 70-second injection-scan delay, lesion definition is optimal, and vascular opacification remains adequate. American Society of Emergency Radiology, 1996 Liver injuries nationallicence Blunt abdominal trauma nationallicence Computed tomography nationallicence Helical technology nationallicence Nuñez Jr. Diego Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut Wester John Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut Lentz Kimberley Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut Amendola Marco Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut Emergency Radiology Springer-Verlag 3/1(1996-01-01), 20-24 1070-3004 3:1<20 1996 3 10140 https://doi.org/10.1007/BF01508161 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01508161 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nuñez Jr Diego Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut NATIONALLICENCE 700 1- Wester John Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut NATIONALLICENCE 700 1- Lentz Kimberley Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut NATIONALLICENCE 700 1- Amendola Marco Department of Radiology, University of Miami School of Medicine, P.O. Box 016960, 33101, Miami, FL aut NATIONALLICENCE 773 0- Emergency Radiology Springer-Verlag 3/1(1996-01-01), 20-24 1070-3004 3:1<20 1996 3 10140 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer