Contrast media extravasation during dynamic CT: detection with an extravasation detection accessory.
To detect extravasation of contrast media during mechanical power injection at dynamic computed tomography, a 5 x 8-cm pliable adhesive patch was applied to the skin over the intravenous cannula and connected to the power injector with a cable to monitor electrical skin impedance. If the rate of change or the slope of impedance over time indicated an extravasation event, the power injector was set into a pause mode. In animal and human studies, monitoring with the device was successful. Extravasation of ionic contrast agents decreased impedance and that of nonionic agents increased impedance.
Nelson
R C
RC
Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.
Anderson
F A
FA
Birnbaum
B A
BA
Chezmar
J L
JL
Glick
S N
SN
D000328:Adult; D000818:Animals; D019719:Diagnostic Equipment; D004285:Dogs; D004867:Equipment Design; D005119:Extravasation of Diagnostic and Therapeutic Materials / Q000175:diagnosis*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed