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Effect of Intravenous Injection Site on Contrast Enhancement of CT Thorax – Comparison Between Injection on Two Sides of Cubital

[ Vol. 14 , Issue. 1 ]

Author(s):

Min-Yi Cui, Zhi Dong, Tao Chan, Yanji Luo, Kun Huang, Ling Xu, Zi-Ping Li and Xiangmin Li*   Pages 124 - 128 ( 5 )

Abstract:


Objective: To investigate the relationship between left or right cubital veins as intravenous contrast injection sites and the quality of enhanced CT thorax images.

Materials and Methods: 332 consecutive patients who underwent contrast enhanced MDCT thorax were included. Subjects were divided into three age groups: Group 1 - <40 years, group 2 - 40-60 years, and group 3 - >60 years, who were administered contrast injection into either left or right cubital veins based on stratified randomization. Anteroposterior distance (APD) is defined as the distance between posterior border of manubrium and anterior border of aortic arch or brachiocephalic artery, where left brachiocephalic vein traverses, which was measured and compared against image quality.

Results: Contrast enhanced images obtained with injection into the right cubital vein showed better quality than those obtained with injection through the left (P < 0. 05). APD showed a statistically significant difference between group 1 and group 3. No significant difference was found between group 1 and 2, and between group 2 and 3. APD correlated with image quality of scans obtained with injection on left cubital vein (P < 0. 05).

Conclusion: Better contrast enhanced CT thorax image quality was seen with injection into right cubital vein by avoiding passage through possibly compressed left brachiocephalic vein, especially in older patients.

Keywords:

Tomography, X- ray computed, contrast enhancement, injection site, MDCT thorax, Anteroposterior distance (APD).

Affiliation:

Department of Radiology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510055, Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, Department of Diagnostic Radiology, The University of Hong Kong, Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, Faculty of Medicine and Dentistry, University of Western Australia, Perth, Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080

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