Study dataset: Real-time ultrasound demonstration of uterine isthmus contractions during pregnancy

This dataset includes transvaginal ultrasound recordings of the uterine cervix in the form of extended video clips (over 15 minutes) from 30 individuals in their second trimester of pregnancy. Each individual also has a fast-motion video clip (at 40x speed) available. The accompanying .csv file provides demographic information about the cohort. The Frame Data folder contains the analyzed video frames and the coordinates of relevant cervical structures identified in each frame. The full analysis of this dataset is published in the American Journal of Obstetrics and Gynecology as an original research paper: https://doi.org/10.1016/j.ajog.2023.07.025 The .csv file consists of the following columns: - Individual (number) - SG_eco: completed weeks of pregnancy - Dies_eco: completed days of the current week of pregnancy - Paritat: number of previous pregnancies ≥23.0wk - Cesaries: number of previous cesarean sections - Edat: maternal age at the time of ultrasound examination (in years) - Pes: maternal weight at the start of the pregnancy (in kg) - Talla: maternal height (in cm) - Contraccio: 0=no, 1=yes (presence of isthmic contraction during the examination, subjectively assessed) - Orina: volume of urine collected before the ultrasound examination (in ml)本数据集包含30名妊娠中期孕妇的子宫颈经阴道超声（transvaginal ultrasound）录像，均为时长超过15分钟的完整视频片段。每位受试者还配有一段40倍速的快动作视频片段。配套的.csv文件提供了该队列（cohort）的人口统计学信息。 本数据集的完整分析已作为原创研究论文发表于《美国妇产科杂志（American Journal of Obstetrics and Gynecology）》，链接为：https://doi.org/10.1016/j.ajog.2023.07.025 该配套.csv文件包含以下字段： - Individual（编号）：受试者编号 - SG_eco：妊娠完成周数 - Dies_eco：当前妊娠周的完成天数 - Paritat：既往孕周≥23.0周的妊娠次数 - Cesaries：既往剖宫产手术（cesarean sections）次数 - Edat：超声检查时的产妇年龄（单位：年） - Pes：妊娠初始时的产妇体重（单位：千克） - Talla：产妇身高（单位：厘米） - Contraccio：0=否，1=是（检查期间经主观评估的子宫峡部收缩（isthmic contraction）存在情况） - Orina：超声检查前采集的尿液体积（单位：毫升）