RT journal article T1 Human upper limbs and low‑cost phantom models for ultrasound‑guided learning of peripheral vascular access A1 García Ortiz, José Carlos A1 Gracia Romero, Manuel Ángel A1 Díaz Gómez, Alfredo Luis A1 Marchante Casas, Guillermo Joaquín A1 Ribelles García, Antonio A1 Pérez Arana, Gonzalo Martín A1 Visiedo García, Francisco Manuel A1 Guerrero Ramírez, Soledad A1 Prada Oliveira, José Arturo A2 Anatomía y Embriología Humana K1 Ultrasound education K1 Gross anatomy K1 Medical education K1 Anatomical variability K1 Procedural simulation K1 Anatomy-teaching K1 Student satisfaction AB Background: Clinical ultrasound has become a core competency for 21st-century physicians, offering real-time diagnostic support. Its integration into early undergraduate medical curricula is progressively increasing. This study presents a strategy developed by our teaching group and evaluates its satisfaction and feasibility in an early clinical ultrasound training interventionMethods: To assess the educational impact of ultrasound training and needle aspiration, we developed several self-designed models. A group of second-year medical students participated in an ultrasound assisted practical lesson using these models. We prepared specialised practical lessons focused on ultrasound-guided vessels puncture using low-cost ballistic gel models. Additionally, dissected human upper limbs were used to cannulated brachial arteries and guide vascular puncture skills. A questionnaire measuring student satisfaction, perceived utility, and timing of the training was designed to quantify its significance.Results: Students highly appreciated the early approach to ultrasonography learning and demonstrate significant anatomical knowledge acquisition. The ballistic gel models surpassed commercial simulators in usability and image quality and were rated as more comfortable for learning. Nevertheless, the human model received the highest student scores.Conclusions: We present several models to increase ultrasound skills in medical students. These models were experienced as a useful and realistic practice compared to commercial alternatives. Their ease of creation and anatomical fidelity combined with low-cost make them valuable tools. Furthermore, the designed human upper limb model proved improving students´satisfaction and the ultrasound-guided vascular approach PB Elsevier SN 0940-9602 YR 2026 FD 2026-05-12 LK http://hdl.handle.net/10498/39672 UL http://hdl.handle.net/10498/39672 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026