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01-08-2019 | Original Article

Comparison of magnetization transfer contrast of conventional and simultaneous multislice turbo spin echo acquisitions focusing on excitation time interval

Authors: Syo Murata, Yasuhiko Tachibana, Katsutoshi Murata, Koji Kamagata, Masaaki Hori, Christina Andica, Michimasa Suzuki, Akihiko Wada, Kanako Kumamaru, Akifumi Hagiwara, Ryusuke Irie, Shuji Sato, Nozomi Hamasaki, Issei Fukunaga, Haruyoshi Hoshito, Shigeki Aoki

Published in: Japanese Journal of Radiology | Issue 8/2019

Abstract

Purpose

Image contrast differs between conventional multislice turbo spin echo (conventional TSE) and multiband turbo spin echo (SMS-TSE). Difference in time interval between excitations for adjacent slices (SETI) might cause this difference. This study aimed to evaluate the influence of SETI on MT effect for conventional TSE and compare conventional TSE with SMS-TSE in this respect.

Materials and methods

Three different agar concentration phantoms were scanned with conventional TSE by adjusting SETI and TR. Signal change for different SETI was evaluated using Pearson’s correlation analysis. SMS-TSE was acquired by changing TR similarly. Three human volunteers were scanned with similar settings to evaluate reproducibility of the phantom results in human brain.

Results

In conventional TSE, shorter SETI induced larger signal reduction. Longer TR and higher agar concentration emphasized this characteristic. Significant linear correlation (P < 0.05) was found in the major cases. The SMS-TSE signal intensity in each TR and phantom was smaller than the assumable levels in conventional TSE when the slices were simultaneously excited. Similar characteristic was observed in human brain.

Conclusion

Shorter SETI results in larger MT effect in conventional TSE. The contrast change in SMS-TSE was larger than the supposable level from simultaneous excitation, which needs consideration in clinics.

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Title: Comparison of magnetization transfer contrast of conventional and simultaneous multislice turbo spin echo acquisitions focusing on excitation time interval
Authors: Syo Murata
Yasuhiko Tachibana
Katsutoshi Murata
Koji Kamagata
Masaaki Hori
Christina Andica
Michimasa Suzuki
Akihiko Wada
Kanako Kumamaru
Akifumi Hagiwara
Ryusuke Irie
Shuji Sato
Nozomi Hamasaki
Issei Fukunaga
Haruyoshi Hoshito
Shigeki Aoki
Publication date: 01-08-2019
Publisher: Springer Japan
Published in: Japanese Journal of Radiology / Issue 8/2019
Print ISSN: 1867-1071
Electronic ISSN: 1867-108X
DOI: https://doi.org/10.1007/s11604-019-00848-w

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Comparison of magnetization transfer contrast of conventional and simultaneous multislice turbo spin echo acquisitions focusing on excitation time interval

Abstract

Purpose

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

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