ArticleBMC neurology2026
Comparison of 5.0T and 3.0T time-of-flight MR angiography for visualizing the anterior choroidal artery.
Article in BMC neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThis study aimed to compare the image quality of 5.0T and 3.0T time-of-flight (TOF) magnetic resonance angiography (MRA) for visualization of the anterior choroidal artery (AChA).
methodsThis retrospective study included patients who underwent both 3.0T and 5.0T TOF-MRA within a 48-hour interval. Objective image quality was assessed using signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). Subjective image quality was independently evaluated by two radiologists using segment-based AChA visibility scores, and quantitative measurements of vessel length and diameter were obtained.
resultsA total of 42 patients who underwent both 3.0T and 5.0T TOF-MRA were included in the paired analysis. Compared with 3.0T imaging, 5.0T TOF-MRA demonstrated significantly higher objective image quality, with increased signal-to-noise ratio (93 ± 5 vs. 65 ± 3) and contrast-to-noise ratio (75 ± 6 vs. 52 ± 4) (both P < 0.001). Subjective analysis showed significantly higher visibility scores for distal anterior choroidal artery segments on 5.0T imaging, particularly for the A2 (P = 0.007) and A3 (P < 0.001) segments. Paired morphological measurements further demonstrated greater apparent AChA length (left: 24.4 ± 7.3 mm vs. 18.7 ± 9.2 mm; P < 0.001) and diameter (left: 1.1 mm (1.0-1.2) vs. 0.9 mm (0.7-1.1); P < 0.001) on 5.0T TOF-MRA compared with 3.0T imaging.
conclusions5.0T TOF-MRA improved visualization of the AChA, particularly its distal segments, compared with 3.0T imaging; further studies are needed to clarify its clinical implications. CLINICAL TRIAL NUMBER: Not applicable.
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