• J Comput Assist Tomogr · Mar 2006

    Randomized Controlled Trial

    Determining the optimal timing for early arterial phase hepatic CT imaging by measuring abdominal aortic enhancement in variable contrast injection protocols.

    • Takamichi Murakami, Hiromitsu Onishi, Koji Mikami, Riccardo Iannaccone, Michael P Federle, Tonsok Kim, Masatoshi Hori, Atsuya Okada, Taro Marukawa, Hiroki Higashihara, Roberto Passariello, and Hironobu Nakamura.
    • Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan. murakami@med.kindai.ac.jp
    • J Comput Assist Tomogr. 2006 Mar 1; 30 (2): 206-11.

    ObjectiveTo find the optimal scan timing for early arterial phase hepatic CT with adequate arterial enhancement after the aortic contrast arrival.MethodsSixty patients were divided randomly into three groups, each of which received 2.0 mL/kg of the 300 mgI/mL contrast medium with an injection duration of 30 seconds (Group A, mean rate 3.6 mL/sec); of 25 seconds (B, 4.6 mL/sec); of 30 seconds (3.6 mL/sec) followed by a saline chaser (C).ResultsAfter the contrast arrival, aortic enhancement increased rapidly for 6-15 seconds (mean, 10 seconds) to the initial peak enhancement in all groups, and then, increased moderately to the maximum aortic enhancement over the following 19, 13, and 21 seconds, respectively. The mean maximum aortic enhancement in Group B (392 HU) and C (360 HU) were significantly higher than that in A (326 HU), respectively. The difference between the initial and maximum aortic enhancement was less than 50 HU.ConclusionThe optimal timing of the early arterial phase for hepatic CT arteriography is 10-15 seconds after the aortic arrival.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…