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Improved visualization of superficial temporal artery using segmented time-of-flight MR angiography with venous suppression at 7T

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Abstract

Purpose

To evaluate the quality of time-of-flight MR angiography (TOF-MRA) with venous suppression at 7T on imaging superficial temporal artery (STA).

Methods

A recently developed segmented TOF technique with reduced specific absorption rate (SAR) of venous suppression (VS) module was employed to achieve high-resolution arterial angiography without the contamination of venous signal. Images of segmented TOF with VS at 7T, TOF without VS at 7T, and TOF with VS at 3T were collected on 17 healthy volunteers. The number of STA branches and their local contrast achieved by the three methods were quantified and compared using paired t test.

Results

Segmented TOF with VS at 7T successfully suppressed venous signal without reducing the contrast of arterial angiography. The numbers of STA branches in 7T images were significantly higher than that in 3T images (5.79 vs. 4.50, p < 0.001). The contrast of 7T segmented TOF was significantly higher than 3T TOF (7.21 vs. 5.56, p = 0.006).

Conclusion

Segmented TOF with VS at 7T displayed more branches of STA, while eliminating the signal of superficial temporal vein (STV). The improved visualization of STA will potentially facilitate the pre-operative assessment of STA in STA-MCA bypass surgery.

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Authors and Affiliations

  1. State Key Laboratory of Brain and Cognitive Science, Beijing MR Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China

    Ning Wei, Zihao Zhang & Yan Zhuo

  2. Siemens Shenzhen Magnetic Resonance Ltd., Shenzhen, 518057, China

    Jing An & Dehe Weng

  3. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yan Zhuo

Authors
  1. Ning Wei
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  2. Zihao Zhang
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  3. Jing An
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  4. Dehe Weng
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  5. Yan Zhuo
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Corresponding author

Correspondence to Zihao Zhang.

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Funding

This study was funded by the Beijing Municipal Natural Science Foundation (7184226) Young Elite Scientists Sponsorship Program by CAST (2017QNRC001), and a Ministry of Science and Technology of China grant (No. 2015CB351701).

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Cite this article

Wei, N., Zhang, Z., An, J. et al. Improved visualization of superficial temporal artery using segmented time-of-flight MR angiography with venous suppression at 7T. Neuroradiology 60, 1243–1246 (2018). https://doi.org/10.1007/s00234-018-2099-9

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  • DOI: https://doi.org/10.1007/s00234-018-2099-9

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