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Reproducibility of radiomic features in SENSE and compressed SENSE: impact of acceleration factors

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Abstract

Objectives

To investigate the impact of acceleration factors on reproducibility of radiomic features in sensitivity encoding (SENSE) and compressed SENSE (CS), compare between SENSE and CS, and identify reproducible radiomic features.

Methods

Three-dimensional turbo spin echo T1-weighted imaging was performed in 14 healthy volunteers (mean age, 57 years; range, 33–67 years; 7 men) under SENSE and CS with accelerator factors of 5.5, 6.8, and 9.7. Eight anatomical locations (brain parenchyma, salivary glands, masseter muscle, tongue, pharyngeal mucosal space, eyeballs) were evaluated. Reproducibility of radiomic features was evaluated by calculating concordance correlation coefficient (CCC) in reference to the original image (SENSE with acceleration factor of 3.5). Reproducibility of radiomic features among acceleration factors and between SENSE and CS was compared.

Results

Proportion of radiomic features with CCC > 0.85 in reference to the original image was lower with higher acceleration factors in both SENSE and CS across all anatomical locations (p < .001). Proportion of radiomic features with CCC > 0.85 in reference to the original image was higher in SENSE compared with CS (SENSE, 6.7–7.3% vs CS, 4.4–5.0%; p < .001). Run percentage of gray-level run-length matrix (GLRLM) with wavelet D showed CCC > 0.85 in reference to the original image in both SENSE and CS at acceleration factor of 9.7 in the highest number of anatomical locations.

Conclusions

Higher acceleration factors resulted in lower reproducibility of radiomic features in both SENSE and CS, and SENSE showed higher reproducibility of radiomic features than CS in reference to the original image. Run percentage of GLRLM with wavelet D was identified as the most reproducible feature.

Key Points

• Reproducibility of radiomic features in reference to the original image was lower with higher acceleration factors in both sensitivity encoding (SENSE) and compressed SENSE (CS) across all anatomical locations (p < .001).

• SENSE showed higher proportions of radiomic features with CCC > 0.85 in reference to the original image (SENSE, 6.7–7.3% vs CS, 4.4–5.0%; p < .001) compared with CS.

• Run percentage of gray-level run-length matrix (GLRLM) with wavelet D showed CCC > 0.85 in reference to the original image in both SENSE and CS with the highest acceleration factor.

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Abbreviations

AFt :

Acceleration factor

CCC:

Concordance correlation coefficient

CS:

Compressed sensing combined with SENSE

GLCM:

Gray-level co-occurrence matrix

GLRLM:

Gray-level run-length matrix

IQR:

Interquartile range

ROI:

Region of interest

SENSE:

Sensitivity encoding

T1WI:

T1-weighted imaging

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Acknowledgements

The same cohort (all 14 healthy volunteers enrolled in the Acceleration Technique registry) was previously reported in a study evaluating image quality in SENSE and CS qualitatively by visual scoring systems and quantitatively by measurement of signal-to-noise ratio and contrast-to-noise ratio [5] while the current study investigated reproducibility of radiomic features in SENSE and CS. The same cohort was also reported in a study comparing 3D T1-weighted turbo spin echo with or without delay alternating with nutation for tailored excitation and improved motion-sensitized driven equilibrium [31].

Funding

This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (2019R1A2C1089939).

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Correspondence to Seung Chai Jung.

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Guarantor

The scientific guarantor of this publication is Seung Chai Jung.

Conflict of interest

The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.

Statistics and biometry

Dr. Seo Young Park kindly provided statistical advice for this manuscript.

Informed consent

Written informed consent was obtained from all subjects (patients) in this study.

Ethical approval

Institutional Review Board approval was obtained.

Study subjects or cohorts overlap

The same cohort (all 14 healthy volunteers enrolled in the Acceleration Technique registry) was previously reported in a study evaluating image quality in SENSE and CS qualitatively by visual scoring systems and quantitatively by measurement of signal-to-noise ratio and contrast-to-noise ratio [1] while the current study investigated reproducibility of radiomic features in SENSE and CS. The same cohort was also reported in a study comparing 3D T1-weighted turbo spin echo with or without delay alternating with nutation for tailored excitation and improved motion-sensitized driven equilibrium [2].

1 Suh CH, Jung SC, Lee HB, Cho SJ (2019) High-Resolution Magnetic Resonance Imaging Using Compressed Sensing for Intracranial and Extracranial Arteries: Comparison with Conventional Parallel Imaging. Korean journal of radiology 20:487-497

2 Cho SJ, Jung SC, Suh CH, Lee JB, Kim D (2019) High-resolution magnetic resonance imaging of intracranial vessel walls: Comparison of 3D T1-weighted turbo spin echo with or without DANTE or iMSDE. PLoS One 14:e0220603

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Kim, M., Jung, S.C., Park, J.E. et al. Reproducibility of radiomic features in SENSE and compressed SENSE: impact of acceleration factors. Eur Radiol 31, 6457–6470 (2021). https://doi.org/10.1007/s00330-021-07760-w

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  • DOI: https://doi.org/10.1007/s00330-021-07760-w

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