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Published in: Japanese Journal of Radiology 8/2021

01-08-2021 | Magnetic Resonance Imaging | Original Article

Magnetic resonance imaging assessment of aortic dilatation and distensibility in 269 patients with repaired tetralogy of Fallot

Authors: Suvipaporn Siripornpitak, Apichaya Sriprachyakul, Saruntorn Wongmetta, Piya Samankatiwat, Pirapat Mokarapong, Suthep Wanitkun

Published in: Japanese Journal of Radiology | Issue 8/2021

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Abstract

Purpose

To determine the prevalence and degree of aortic dilatation (Adilatation), severity of aortic stiffness (Astiff), factors for Adilatation, and level of aortic root most sensitive to Astiff in patients with repaired tetralogy of Fallot (rTOF).

Materials and methods

269 patients with rTOF (mean age 14.9 ± standard deviation 5.0 years) were analyzed for Adilatation at annulus, sinus, sinotubular junction, and ascending aorta (aAo). Aortic size index was graded as Z score < 2, 2–2.99, 3–4.99 and ≥ 5. Aortic distensibility (aAdis) was categorized according to 4 aortic levels and dilatation severity. Factors for Adilatation and level of aortic root most sensitive to Astiff were analyzed.

Results

Sinus and aAo were the two most common sites of Adilatation, with a prevalence of 84% and 76%, respectively. A decreased aAdis was found (mean 5.38 ± 1.79 10−3 mmHg−1). aAdis only declined significantly at the sinus level (p = 0.009). Male sex, age-at-repair and aortic regurgitation were significant factors for Adilatation, with male sex as the strongest factor (odds ratio 2.94). There was a significant decline in aAdis at sinus level (p = 0.002) as Adilatation progressed.

Conclusions

We observed a high prevalence of Adilatation and Astiff in patients with rTOF. Male sex is the strongest factor for Adilatation. The sinus is the most sensitive area for determining a negative aAdis effect.
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Metadata
Title
Magnetic resonance imaging assessment of aortic dilatation and distensibility in 269 patients with repaired tetralogy of Fallot
Authors
Suvipaporn Siripornpitak
Apichaya Sriprachyakul
Saruntorn Wongmetta
Piya Samankatiwat
Pirapat Mokarapong
Suthep Wanitkun
Publication date
01-08-2021
Publisher
Springer Singapore
Published in
Japanese Journal of Radiology / Issue 8/2021
Print ISSN: 1867-1071
Electronic ISSN: 1867-108X
DOI
https://doi.org/10.1007/s11604-021-01119-3

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