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Optimal Scan Timing and Intravenous Route for Contrast-Enhanced Computed Tomography in Patients After Fontan Operation

Cited 13 time in Web of Science Cited 17 time in Scopus
Authors
Park, Eun-Ah; Lee, Whal; Chung, Se-Young; Yin, Yong Hu; Park, Jae Hyung; Chung, Jin Wook
Issue Date
2010-02
Publisher
LIPPINCOTT WILLIAMS & WILKINS
Citation
JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY; Vol.34 1; 75-81
Keywords
Fontan operationthrombuscomputed tomography
Abstract
Purpose: To determine the optimal scan timing and adequate intravenous route for patients having undergone the Fontan operation. Materials and Methods: A total Of 88 Computed tomographic images in 49 consecutive patients who underwent the Fontan operation were retrospectively evaluated and divided into 7 groups: group 1, bolus-tracking method with either intravenous route (n = 20); group 2, 1-minute-delay scan with single antecubital route (n = 36); group 3, 1-minute-delay scan with both antecubital routes (n = 2); group 4, 1-minute-delay scan with foot vein route (n = 3); group 5, 1-minute-delay scan with simultaneous infusion via both antecubital and foot vein routes (n = 2); group 6, 3-minute-delay scan with single antecubital route (n = 22); and group 7, 3-minute-delay scan with foot vein route (n = 3). The presence of beam-hardening artifact, uniform enhancement, and optimal enhancement was evaluated at the fight pulmonary artery (RPA), left pulmonary artery (LPA), and Fontan tract. Optimal enhancement was determined when evaluation of thrombus was possible. Standard deviation was measured at the RPA, LPA, and Fontan tract. Results: Beam-hardening artifacts of the RPA, LPA, and Fontan tract were frequently present in groups 1, 4, and 5. The success rate of uniform and optimal enhancement was highest (100%) in groups 6 and 7, followed by group 2 (75%). An SD of less than 30 Hounsfield unit for the pulmonary artery and Fontan tract was found in groups 3, 6, and 7. Conclusions: The optimal enhancement of the pulmonary arteries and Fontan tract can be achieved by a 3-minute-delay scan irrespective of the intravenous route location.
ISSN
0363-8715
Language
English
URI
http://hdl.handle.net/10371/78443
DOI
https://doi.org/10.1097/RCT.0b013e3181ae292c
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College of Medicine/School of Medicine (의과대학/대학원)Radiology (영상의학전공)Journal Papers (저널논문_영상의학전공)
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