Journal article
Comparison of simultaneous multi-slice readout-segmented EPI and conventional single-shot EPI for diffusion tensor imaging of the ulnar nerve.
- Ho M Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Becker A Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Ulbrich E Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Manoliu A Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Kuhn FP Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Eberhard M Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- Filli L Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
- 2018-10-27
Published in:
- Heliyon. - 2018
English
Purpose
To compare conventional single-shot echo planar imaging (ss-EPI) and simultaneous multi-slice (SMS) readout-segmented EPI (rs-EPI) for magnetic resonance diffusion tensor imaging (DTI) of the ulnar nerve.
Materials and methods
This study was approved by the local ethics committee. Ten healthy volunteers (mean age 30.4 ± 4.01 years; range 25-36 years) underwent 3T DTI of the ulnar nerve at the level of the cubital tunnel. DTI was performed based on ss-EPI as well as SMS rs-EPI sequences. Signal-to-noise ratio (SNR), image quality, and DTI parameters in the ulnar nerve (fractional anisotropy, FA; mean diffusivity, MD) were compared between the two sequences by two independent radiologists.
Results
Acquisition time was 5:12 min for ss-EPI and 5:18 min for SMS rs-EPI. Between the two sequences, no significant differences were found for derived DTI measures FA (p = 0.11) and MD values (p = 0.93). Compared to conventional ss-EPI, SMS rs-EPI yielded significantly less ghosting artifacts (p = 0.04) but inferior nerve depiction (p = 0.001) and worse overall image quality (p = 0.008).
Conclusion
SMS rs-EPI is not advantageous over ss-EPI in DTI of the ulnar nerve at the level of the cubital tunnel.
To compare conventional single-shot echo planar imaging (ss-EPI) and simultaneous multi-slice (SMS) readout-segmented EPI (rs-EPI) for magnetic resonance diffusion tensor imaging (DTI) of the ulnar nerve.
Materials and methods
This study was approved by the local ethics committee. Ten healthy volunteers (mean age 30.4 ± 4.01 years; range 25-36 years) underwent 3T DTI of the ulnar nerve at the level of the cubital tunnel. DTI was performed based on ss-EPI as well as SMS rs-EPI sequences. Signal-to-noise ratio (SNR), image quality, and DTI parameters in the ulnar nerve (fractional anisotropy, FA; mean diffusivity, MD) were compared between the two sequences by two independent radiologists.
Results
Acquisition time was 5:12 min for ss-EPI and 5:18 min for SMS rs-EPI. Between the two sequences, no significant differences were found for derived DTI measures FA (p = 0.11) and MD values (p = 0.93). Compared to conventional ss-EPI, SMS rs-EPI yielded significantly less ghosting artifacts (p = 0.04) but inferior nerve depiction (p = 0.001) and worse overall image quality (p = 0.008).
Conclusion
SMS rs-EPI is not advantageous over ss-EPI in DTI of the ulnar nerve at the level of the cubital tunnel.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1016/j.heliyon.2018.e00853
- PMID 30364500
- Persistent URL
- https://sonar.ch/global/documents/285038
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