<![CDATA[Ultrasonography, particularly Doppler ultrasound, requires adequate practical skills to ensure accurate examination and interpretation of blood flow characteristics. However, student training is often limited by restricted patient availability, safety considerations, and insufficient opportunities for repeated practice. Simulation media, such as phantoms, provide a controlled and safe learning environment; however, commercial Doppler phantoms remain relatively expensive and less accessible for educational institutions. This study aimed to develop a SimuGel gelatin-based Color Doppler phantom as an innovative simulation medium for laboratory practice in ultrasonography courses. This study employed a Research and Development (R&D) method using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The phantom was developed using SimuGel gelatin, glycerin, distilled water, psyllium husk, preservatives, acrylic components, and an aquarium pump-based flow system. Product feasibility was evaluated by three experts, while practicality testing involved 30 students. Data were collected through observation, questionnaires, interviews, and product trials, then analyzed descriptively using a Likert scale. The results showed that expert validation categorized the phantom as feasible, with assessment scores ranging from 2.67 to 4.00. Student evaluations indicated a very feasible category, with an average score of 3.70. The phantom successfully generated Color Doppler visualization, supported training in Doppler ultrasound parameters, and improved students’ understanding of ultrasound examination procedures. However, the continuous flow system limited the simulation of physiological pulsatile blood flow characteristics. In conclusion, the SimuGel-based Color Doppler phantom was a feasible, practical, and affordable learning medium for Doppler ultrasound education, although further improvements are required to enhance the realism of the simulated blood flow.]]>
