Consumable Material Waste and Workflow Efficiency Comparison Between Multi-use Syringeless and Single-use Syringe-Based Injectors in Computed Tomography

Abstract

Syringeless power injectors obviate the need for reloading iodinated contrast media (ICM) and plastic consumable pistons between exams. This study evaluates the potential time and material waste (ICM, plastic, saline, and total) saved using a multi-use syringeless injector (MUSI)compared to a single-use syringe-based injector(SUSI). Two observers recorded technologist time spent using a SUSIand a MUSIover three clinical workdays. CT technologists (n=15) were polled on their experience between the systems using a 5-point Likert scale survey. ICM, plastic, and saline waste data from each system were collected. A mathematical model was created to estimate total and categorical waste from each injector system over a 16-week period. On average, CT technologists spent 40.5seconds less per exam with MUSI compared to SUSI (p<.001). Technologists rated MUSI work efficiency, user-friendliness, and overall satisfaction (strongly or somewhat improved) higher relative to SUSI (p<.05). Iodine waste was 31.3L and 0.0L for SUSI and MUSI, respectively. Plastic waste was 467.7kg and 71.9kg for SUSI and MUSI, respectively. Saline waste was 43.3L and 52.5L for SUSI and MUSI, respectively. Total waste was 555.0kg and 124.4kg for SUSI and MUSI respectively. Switching from SUSI to MUSI resulted in a 100%, 84.6%, and 77.6% reduction in ICM, plastic, and total waste. This system may fortify institutional endeavors toward green radiology initiatives. The potential time saved administering contrast using MUSI may improve CT technologist efficiency.