Trauma Imaging with Color Contrast for Color CT: In Vivo Use of Complementary Contrast Materials at Dual-energy Computed Tomography (original) (raw)

Abstract

PURPOSE We evaluate the ability of a clinical dual-energy computed tomography (DECT) scanner to visually separate pairs of contrast materials selected for maximal differentiability in phantoms and in vivo in a rat cardiac and rabbit abdominal trauma model. We compare accuracy, confidence and speed of diagnosis between conventional CT and dual contrast DECT abdominal trauma imaging. METHOD AND MATERIALS Phantoms with varying concentrations of iodine/tungsten and iodine/bismuth were scanned on a rapid kVp switching DECT scanner. In vivo DECT scans were performed on a rat enhanced with iodinated and tungsten-cluster intravenous contrast agents delivered 15 seconds apart. Five rabbits with bowel and/or vascular penetrating trauma were imaged with simultaneous iodinated intravenous and bismuth subsalicylate enteric contrast at DECT. 10 radiologists without prior DECT experience each evaluated 10 extralumenal collections to record vascular and/or enteric origin of extravasation and their ...

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