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Updated: Feb 14, 2026
Phase Contrast Magnetic Resonance Imaging in the Rat Common Carotid Artery
Published on: September 5, 2018
Artifacts during the arterial phase of gadoxetate disodium-enhanced MRI: Multiple arterial phases using view-sharing
Ji Hye Min1,2, Young Kon Kim3, Tae Wook Kang1
1Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Ilwon-Ro, Gangnam-gu, Seoul, Korea.
Objectives:
To assess the usefulness of multiple arterial phase (AP) of gadoxetic acid-enhanced MRI using view-sharing of two different vendors to reduce transient severe motion (TSM) artifact in the AP.
Methods:
This retrospective study included 298 patients (mean age 63 years) who underwent gadoxetic acid MRI with multiple AP from two different vendors; either triple (subcohort A, n=174) or quadruple (subcohort B, n=124) AP. 202 patients (143 vs. 59) underwent follow-up MRI with single AP. To compare multiple AP with single AP and between subcohorts, mean artifact score rated by two observers and frequency of significant artifacts were evaluated. Frequency of acquisition of late AP was also assessed.
Results:
There was no difference in mean artifact score (p=0.086) or frequency of significant artifacts (p=0.219) between multiple AP and single AP. For the mean best score with multiple AP, subcohort B was better than subcohort A (p<0.001). Late AP was achieved more often with multiple AP (74.8 %, 98.3 %) than with single AP (64.3 %, 64.4 %).
Conclusion:
Multiple AP using different view-sharing failed to show differences in TSM artifacts in AP compared to single AP. Frequency of acquisition of late AP was higher with multiple AP. Mean best artifact score of multiple AP is different depending on view-sharing technique.
Key Points:
• TSM artifacts were not significantly different between multiple AP and single AP. • The frequency of acquiring late AP was higher with multiple AP. • For multiple APs, TSM artifacts are different according to view-sharing technique.
Insights
Multiple arterial phases (AP) in gadoxetic acid MRI did not significantly reduce transient severe motion (TSM) artifacts compared to single AP. However, multiple APs increased the acquisition of late AP, with variations based on vendor view-sharing techniques.
Area of Science:
- Radiology
- Medical Imaging
- Hepatobiliary Imaging
Background:
- Transient severe motion (TSM) artifacts can degrade the quality of arterial phase (AP) imaging in gadoxetic acid-enhanced MRI.
- Optimizing AP acquisition is crucial for accurate liver lesion characterization.
Purpose of the Study:
- To evaluate the effectiveness of multiple arterial phases (AP) using vendor-specific view-sharing techniques in reducing TSM artifacts during gadoxetic acid-enhanced MRI.
- To compare the artifact reduction and late AP acquisition rates between multiple and single AP protocols.
Main Methods:
- Retrospective analysis of 298 patients undergoing gadoxetic acid MRI with either triple or quadruple AP (multiple AP) or single AP.
- Two observers assessed mean artifact scores and the frequency of significant artifacts.
- Frequency of late AP acquisition was also evaluated.
Main Results:
- No significant difference in mean artifact score or frequency of significant artifacts was found between multiple AP and single AP protocols.
- Subcohort B (quadruple AP) demonstrated a better mean best artifact score compared to subcohort A (triple AP).
- The frequency of acquiring late AP was higher with multiple AP protocols (74.8%-98.3%) compared to single AP (64.3%-64.4%).
Conclusions:
- Multiple arterial phases using different view-sharing techniques did not significantly reduce TSM artifacts compared to single AP.
- Multiple AP protocols were associated with a higher frequency of late AP acquisition.
- The effectiveness of multiple AP in artifact reduction varies depending on the specific view-sharing technique employed.
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