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Open Access 01-12-2023 | Original Article

Higher field reduced FOV diffusion-weighted imaging for abdominal imaging at 5.0 Tesla: image quality evaluation compared with 3.0 Tesla

Authors: Yunfei Zhang, Ruofan Sheng, Chun Yang, Yongming Dai, Mengsu Zeng

Published in: Insights into Imaging | Issue 1/2023

Abstract

Objective

To evaluate the image quality of reduced field-of-view (rFOV) DWI for abdominal imaging at 5.0 Tesla (T) compared with 3.0 T.

Methods

Fifteen volunteers were included into this prospective study. All the subjects underwent the 3.0 T and 5.0 T MR examinations (time interval: 2 ± 1.9 days). Free-breathing (FB), respiratory-triggered (RT), and navigator-triggered (NT) spin-echo echo-planner imaging-based rFOV-DWI examinations were conducted at 3.0 T and 5.0 T (FB_{3.0 T}, NT_{3.0 T}, RT_{3.0 T}, FB_{5.0 T}, NT_{5.0 T}, and RT_{5.0 T}) with two b values (b = 0 and 800 s/mm²), respectively. The signal-to-noise ratio (SNR) of different acquisition approaches were determined and statistically compared. The image quality was assessed and statistically compared with a 5-point scoring system.

Results

The SNRs of any 5.0 T DWI images were significantly higher than those of any 3.0 T DWI images for same anatomic locations. Moreover, 5.0 T rFOV-DWIs had the significantly higher sharpness scores than 3.0 T rFOV-DWIs. Similar distortion scores were observed at both 3.0 T and 5.0 T. Finally, RT_{5.0 T} displayed the best overall image quality followed by NT_{5.0 T}, FB_{5.0 T}, RT_{3.0 T}, NT_{3.0 T} and FB_{3.0 T} (RT_{5.0 T} = 3.9 ± 0.3, NT_{5.0 T} = 3.8 ± 0.3, FB_{5.0 T} = 3.4 ± 0.3, RT_{3.0 T} = 3.2 ± 0.4, NT_{3.0 T} = 3.1 ± 0.4, and FB_{3.0 T} = 2.7 ± 0.4, p < 0.001).

Conclusion

The 5.0 T rFOV-DWI showed better overall image quality and improved SNR compared to 3.0 T rFOV-DWI, which holds clinical potential for identifying the abdominal abnormalities in routine practice.

Critical relevance statement

This study provided evidence that abdominal 5.0 Tesla reduced field of view diffusion-weighted imaging (5.0 T rFOV-DWI) exhibited enhanced image quality and higher SNR compared to its 3.0 Tesla counterparts, holding clinical promise for accurately visualizing abdominal abnormalities.

Key points

• rFOV-DWI was firstly integrated with high-field-MRI for visualizing various abdominal organs.

• This study indicated the feasibility of abdominal 5.0 T-rFOV-DWI.

• Better image quality was identified for 5.0 T rFOV-DWI.

Graphical Abstract

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Title: Higher field reduced FOV diffusion-weighted imaging for abdominal imaging at 5.0 Tesla: image quality evaluation compared with 3.0 Tesla
Authors: Yunfei Zhang
Ruofan Sheng
Chun Yang
Yongming Dai
Mengsu Zeng
Publication date: 01-12-2023
Publisher: Springer Vienna
Published in: Insights into Imaging / Issue 1/2023
Electronic ISSN: 1869-4101
DOI: https://doi.org/10.1186/s13244-023-01513-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Higher field reduced FOV diffusion-weighted imaging for abdominal imaging at 5.0 Tesla: image quality evaluation compared with 3.0 Tesla

Abstract

Objective

Methods

Results

Conclusion

Critical relevance statement

Key points

Graphical Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Methods

Results

Conclusion

Critical relevance statement

Key points

Graphical Abstract

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