Prediction of the time to peak hepatic enhancement to optimize contrast-enhanced spiral CT.
A technique for the prediction of the time to peak hepatic enhancement to optimize contrast-enhanced spiral CT has been developed. The procedures are (a) to inject a small amount of contrast medium rapidly via the antecubital vein and measure aortic transit time (ATT) of the bolus by single slice dynamic CT; (b) to inject contrast medium at a high rate, expecting peak hepatic enhancement to occur at ATT plus 8 seconds after the end of injection; (c) to perform spiral scanning of the liver using thin collimation and caudo-cranial table movement beginning at ATT after the end of contrast medium injection.
Irie
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Department of Radiology, National Defense Medical College, Saitama, Japan.
Suzuki
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Yamauchi
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Kusano
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D001012:Aorta, Abdominal / Q000000981:diagnostic imaging; D001835:Body Weight; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007275:Injections, Intravenous; D007479:Iopamidol / Q000008:administration & dosage; D008099:Liver / Q000000981:diagnostic imaging*; D008875:Middle Aged; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*
D007479:Iopamidol