Sexauer Raphael, Bestler Caroline
Department of Radiology and Nuclear Medicine, University Hospital Basel, 4031 Basel, Switzerland.
J Imaging. 2022 Jul 24;8(8):208. doi: 10.3390/jimaging8080208.
Timestamps in the Radiology Information System (RIS) are a readily available and valuable source of information with increasing significance, among others, due to the current focus on the clinical impact of artificial intelligence applications. We aimed to evaluate timestamp-based radiological dictation time, introduce timestamp modeling techniques, and compare those with prospective measured reporting. Dictation time was calculated from RIS timestamps between 05/2010 and 01/2021 at our institution ( = 108,310). We minimized contextual outliers by simulating the raw data by iteration (1000, vector size (µ/sd/λ) = 100/loop), assuming normally distributed reporting times. In addition, 329 reporting times were prospectively measured by two radiologists (1 and 4 years of experience). Altogether, 106,127 of 108,310 exams were included after simulation, with a mean dictation time of 16.62 min. Mean dictation time was 16.05 min head CT (44,743/45,596), 15.84 min for chest CT (32,797/33,381), 17.92 min for abdominal CT ( = 22,805/23,483), 10.96 min for CT foot ( = 937/958), 9.14 min for lumbar spine (881/892), 8.83 min for shoulder (409/436), 8.83 min for CT wrist (1201/1322), and 39.20 min for a polytrauma patient (2127/2242), without a significant difference to the prospective reporting times. In conclusion, timestamp analysis is useful to measure current reporting practice, whereas body-region and radiological experience are confounders. This could aid in cost-benefit assessments of workflow changes (e.g., AI implementation).
放射信息系统（RIS）中的时间戳是一个随时可用且有价值的信息来源，其重要性日益增加，尤其是由于当前对人工智能应用临床影响的关注。我们旨在评估基于时间戳的放射学口述时间，引入时间戳建模技术，并将其与前瞻性测量的报告进行比较。口述时间是根据我们机构2010年5月至2021年1月期间的RIS时间戳计算得出的（=108,310）。我们通过迭代模拟原始数据（1000次，向量大小（µ/sd/λ）=100/循环）来最小化上下文异常值，假设报告时间呈正态分布。此外，两位放射科医生（分别有1年和4年经验）前瞻性地测量了329次报告时间。模拟后，108,310次检查中的106,127次被纳入，平均口述时间为16.62分钟。头部CT的平均口述时间为16.05分钟（44,743/45,596），胸部CT为15.84分钟（32,797/33,381），腹部CT为17.92分钟（=22,805/23,483），足部CT为10.96分钟（=937/958），腰椎为9.14分钟（881/892），肩部为8.83分钟（409/436），腕部CT为8.83分钟（1201/1322），多发伤患者为39.20分钟（2127/2242），与前瞻性报告时间无显著差异。总之，时间戳分析有助于衡量当前的报告实践，而身体部位和放射学经验是混杂因素。这有助于对工作流程变化（如人工智能实施）进行成本效益评估。
