Quality control of ultrasound at 11 to 14 weeks of gestation: results from the China Early Pregnancy Ultrasound Cohort
摘要
To assess the quality control (QC) of ultrasound scanning at 11–14 weeks of gestation during the first stage in the China Early Pregnancy Ultrasound Cohort (CEPUC).
MethodsA stratified random sampling strategy was employed for QC on ultrasound images from 525 single fetuses between 11 and 13 +6 weeks of gestation across nine hospitals. The QC process consisted of two elements: (1) the retention of 17 types of ultrasound scans and (2) the assessment of each scan’s content, which was scored out of 47 points. QC was performed twice: initially through hospital self-assessment (self-QC) and a subsequent review by the cohort team (second QC). The QC scores were calculated and compared across different groups using the Chi-square test, Fisher’s exact test, or the Wilcoxon signed-rank test.
ResultsThe median number of retained ultrasound scans per person was 16.0 (interquartile range: 15.0–17.0). The median scores for self-QC and second QC were 44 points (interquartile range: 40–47) and 43 points (interquartile range: 38–46), respectively. The second QC scores were significantly lower than the self-QC scores (P < 0.001), with 225 cases (42.9%) scoring lower and 280 cases (53.3%) scoring equally. Excluding image magnification, the three items with the lowest scoring rates among the other 37 were: (1) coronal view of the cervical spine to the sacrum (62.3%), (2) assessing regurgitation in the tricuspid valve spectrum of the heart (63.4%), and (3) obtaining a three-dimensional (3D) image of the choroid plexus Sect. (78.1%).
ConclusionsQC in ultrasound is crucial for multicenter cohort studies, ensuring consistency and reliability across various sites. Both subjective and objective measurements should be seriously considered.