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Updated: Dec 7, 2025

Percutaneous Contrast Echocardiography-guided Intramyocardial Injection and Cell Delivery in a Large Preclinical Model
Published on: January 21, 2018
Improved Computed Tomography Contrast Injection Rates Through Implantable Chest Power Ports
James C Fielding1, Nicolaus A Wagner-Bartak1, Sanaz Javadi1
1From the Department of Abdominal Imaging.
Objective:
The aim of this study was to optimize chest port contrast injections using stepwise improvements.
Methods:
Ex vivo injections were tested. Two hundred scans using power port injections were then evaluated.
Results:
The highest flow rate was achieved using a 19G access needle, larger diameter tubing, and warmed contrast.The mean injection rates in baseline and postimprovement groups were 2.7 ± 0.4 and 4.8 ± 0.4 mL/s, respectively (P < .0001).
Conclusion:
Component optimization of the port apparatus can maximize contrast flow rates.
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