ArticleLa Radiologia medica2026
Comparative analysis of 3 T versus 1.5 T MRCP image quality and age-stratified biliary normative values in infants.
Article in La Radiologia medica, 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
objectivesTo evaluate the impact of magnetic field strength on MRCP image quality in infants aged 0-12 months, and to establish age-stratified reference values for physiological the diameter of normal infant biliary system development.
methodsThis retrospective study included 155 infants undergoing MRCP with either a 1.5 T or 3.0 T magnetic field strength. Image quality was rated as excellent, moderate, or poor by two radiologists. The correlation between MRCP image quality and gender, age, body weight, magnetic field strength, and the diameter of normal infant biliary system were analyzed. Multivariate logistic regression identified independent predictors of diagnostic image quality.
resultsThe 3.0 T scanner significantly outperformed the 1.5 T system in producing excellent-quality images (46.39% vs. 20.69%; P < 0.05) and reducing non-diagnostic rates (14.43% vs. 46.55%; P < 0.001). This advantage was consistent across all age groups and amplified in older infants. Non-diagnostic image rates decreased with increasing age (0-1 months: 53.33% → 3-12 months: 11.86%) and weight, although field strength was the only independent predictor of diagnostic quality (P < 0.001). Gender has no significant influence on image quality (P > 0.05). Reference biliary diameters showed age-related growth, with CBD diameter increasing from 1.68 ± 0.26 mm (0-1 months) to 2.17 ± 0.40 mm (3-12 months; P < 0.05). The 95th percentile CBD diameter for 3-12 months was 3.12 mm, exceeding prior ultrasound thresholds.
conclusionsMagnetic field strength is the primary determinant of infant MRCP image quality. A 3.0 T scanner offers superior diagnostic performance and enables accurate measurement of age-dependent biliary dimensions.
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