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Published in: Pediatric Radiology 5/2024

29-01-2024 | Fetal Magnetic Resonance Imaging | Original Article

Assessment of mediastinal shift angles in congenital pulmonary airway malformation: a new fetal magnetic resonance imaging indicator of congenital lung disease

Authors: Jun Tsukamoto, Osamu Miyazaki, Yuki Saito, Saho Irahara, Reiko Okamoto, Mikiko Miyasaka, Yoshiyuki Tsutsumi, Yushi Itoh, Haruhiko Sago, Yutaka Kanamori, Masashi Mikami, Yoshiko Hayashida, Takatoshi Aoki, Shunsuke Nosaka

Published in: Pediatric Radiology | Issue 5/2024

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Abstract

Background

The mediastinal shift angle is a new fetal magnetic resonance imaging (MRI) index that is reportedly correlated with postnatal survival in fetuses with congenital diaphragmatic hernia. However, its correlation in patients with congenital pulmonary airway malformation (CPAM) has not been assessed.

Objective

This study aimed to establish a normal range for the right/left mediastinal shift angles, to evaluate the mediastinal shift angle in fetuses with CPAM, to compare the mediastinal shift angle with the CPAM volume ratio, and to evaluate the predictive value of the mediastinal shift angle measurements.

Materials and methods

To establish the normal range, we measured the mediastinal shift angle bilaterally in 124 fetuses without any lung abnormality (the control group). Subsequently, the mediastinal shift angle was measured in 32 fetuses pathologically diagnosed with CPAM. Moreover, the mediastinal shift angle and CPAM volume ratio were compared using fetal MRI.

Results

The mean values for the right/left mediastinal shift angles were 18.6°/26.3° and 39.2°/35.9° for control fetuses and fetuses with CPAM, respectively. The mediastinal shift angle and the CPAM volume ratio showed a positive statistical correlation. The area under the curve demonstrated high discriminatory accuracy for the mediastinal shift angle (0.76).

Conclusion

The mediastinal shift angle has potential to replace the CPAM volume ratio for evaluating the severity of CPAM in fetal MRI.

Graphical Abstract

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Metadata
Title
Assessment of mediastinal shift angles in congenital pulmonary airway malformation: a new fetal magnetic resonance imaging indicator of congenital lung disease
Authors
Jun Tsukamoto
Osamu Miyazaki
Yuki Saito
Saho Irahara
Reiko Okamoto
Mikiko Miyasaka
Yoshiyuki Tsutsumi
Yushi Itoh
Haruhiko Sago
Yutaka Kanamori
Masashi Mikami
Yoshiko Hayashida
Takatoshi Aoki
Shunsuke Nosaka
Publication date
29-01-2024
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Radiology / Issue 5/2024
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI
https://doi.org/10.1007/s00247-024-05852-5

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