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European Radiology
Erschienen in:

02.08.2024 | Magnetic Resonance

Fat-suppression T2 relaxation time and water fraction predict response to intravenous glucocorticoid therapy for thyroid-associated ophthalmopathy

verfasst von: Linhan Zhai, Feng Li, Ban Luo, Qiuxia Wang, Hongyu Wu, Yali Zhao, Gang Yuan, Jing Zhang

Erschienen in: European Radiology | Ausgabe 2/2025

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Abstract

Objective

To investigate the value of fat-suppression (FS) T2 relaxation time (T2RT) derived from FS T2 mapping and water fraction (WF) derived from T2 IDEAL to predict the treatment response to intravenous glucocorticoids (IVGC) in patients with thyroid-associated ophthalmopathy (TAO) based on texture analysis.

Materials and methods

In this study, 89 patients clinically diagnosed with active and moderate-to-severe TAO were enroled (responsive group, 48 patients; unresponsive group, 41 patients). The baseline clinical characteristics and texture features were compared between the two groups. Multivariate analysis was performed to identify the independent predictors of treatment response to IVGC. ROC analysis and the DeLong test were used to assess and compare the predictive performance of different models.

Results

The responsive group exhibited significantly shorter disease duration and higher 90th percentile of FS T2RT and kurtosis of WF in the extraocular muscle (EOM) and 95th percentile of WF in the orbital fat (OF) than the unresponsive group. Model 2 (disease duration + WF; AUC, 0.816) and model 3 (disease duration + FS T2RT + WF; AUC, 0.823) demonstrated superior predictive efficacy compared to model 1 (disease duration + FS T2RT; AUC, 0.756), while there was no significant difference between models 2 and 3.

Conclusions

The orbital tissues of responders exhibited more oedema and heterogeneity. Furthermore, OF is as valuable as EOM for assessing the therapeutic efficacy of IVGC. Finally, WF derived from T2 IDEAL processed by texture analysis can provide valuable information for predicting the treatment response to IVGC in patients with active and moderate-to-severe TAO.

Clinical relevance statement

The texture features of FS T2RT and WF are different between responders and non-responders, which can be the predictive tool for treatment response to IVGC.

Key Points

  • Texture analysis can be used for predicting response to IVGC in TAO patients.
  • TAO patients responsive to IVGC show more oedema and heterogeneity in the orbital tissues.
  • WF from T2 IDEAL is a tool to predict the therapeutic response of TAO.
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Metadaten
Titel
Fat-suppression T2 relaxation time and water fraction predict response to intravenous glucocorticoid therapy for thyroid-associated ophthalmopathy
verfasst von
Linhan Zhai
Feng Li
Ban Luo
Qiuxia Wang
Hongyu Wu
Yali Zhao
Gang Yuan
Jing Zhang
Publikationsdatum
02.08.2024
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 2/2025
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-024-10868-4

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