ArticleQuantitative imaging in medicine and surgery2026
Reducing respiratory motion artifacts in gadoxetate disodium-enhanced magnetic resonance imaging (EOB-MRI): assessing assisted breath-holding effectiveness.
Article in Quantitative imaging in medicine and surgery, 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
Background: Gadoxetate disodium-enhanced magnetic resonance imaging (EOB-MRI) is a critical modality in hepatobiliary diagnostics, providing high-resolution imaging of hepatic lesions and functional assessment of the liver. Despite its clinical benefits, respiratory motion artifacts in the hepatic arterial phase of EOB-MRI remain a major clinical challenge, reducing diagnostic accuracy. This study aimed to evaluate the efficacy of an assisted breath-holding technique in reducing respiratory motion artifacts during the hepatic arterial phase of EOB-MRI and its impact on diagnostic image quality. Methods: This prospective study enrolled 617 participants who underwent EOB-MRI at two separate branches in a tertiary care hospital. Participants who met the inclusion criteria were assigned to consecutive groups: a control group (n=309) that underwent standard breath-holding, and an experimental group (n=308) in which assisted breath-holding using manual nose pinching was applied during hepatic arterial-phase acquisition. Respiratory motion artifacts were graded by two independent radiologists blinded to the group assignments, categorizing images into no artifacts, mild artifacts, moderate artifacts, and severe artifacts. Self-reported dyspnea was recorded immediately post-scan to evaluate patient comfort. Results: There were 617 patients (mean age, 55.4±11.7 years; 415 men, 202 women) analyzed. The respiratory artifacts occurred in 18.8% (58/309) of controls versus 5.2% (16/308) of experimental participants (P<0.01). Moderate artifacts decreased from 10.4% (32/309) in the control group to 3.9% (12/308). Severe artifact rates decreased from 8.4% (26/309) to 1.3% (4/308). Inter-reader agreement was good (Kappa =0.68, P<0.01). No significant differences in dyspnea incidence were observed (1.94% Conclusions: The assisted breath-holding technique significantly reduces respiratory motion artifacts in EOB-MRI without significantly increasing self-reported dyspnea, enhancing hepatobiliary imaging quality.
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