Development of an Electric Motor–Driven Mobile X-ray Cart at Surat Thani Cancer Hospital

Abstract

This Research and Development (R&D) design study aimed to develop and evaluate the performance and usability of an electric motor–driven mobile X-ray cart, as well as to assess user's satisfaction. The sample consisted of 12 radiology technologists, selected through purposive sampling, based on predefined criteria. The research was conducted in two phases. Phase 1 involved the development of the electric motor–driven mobile X-ray cart, comprising three stages: a) needs assessment and analysis, b) design and drafting, and c) preliminary testing with refinement. Phase 2 inclided the evaluation of performance and user satisfaction. Research instruments were: a) the mobile X-ray cart prototype, and b) the assessment forms on performance and satisfaction. The content validity index (IOC) was evaluated by experts, yielding .86. Data were collected from December 2024 to March 2025, then analyzed using frequency, percentage, mean, standard deviation, and independent t-test, at the .05 significance level. Results showed as follows.

1. The developed prototype measured 70×80×11 cm and weighed 20.70 kg, with a maximum load capacity of 250 kg. The structure was made of galvanized steel with anti-corrosion properties. It was equipped with two 350-watt, 36-volt, brushless DC motors, and powered by a 36 volt, 8 Ah lithium-ion battery. The battery required 2 hours for a full charge and supported continuous operation for up to 7 hours or 15 km. Speed was controlled via a hand throttle within a range of 1–5 km/h, and the cart could climb slopes of up to 10 degrees.

2. Post-development performance evaluation (M = 3.91, SD = 0.61) was significantly higher than pre-development (M = 2.51, SD = 0.44) (t = -5.57, p-value < .001). The highest-rated aspect was ease of movement and operation (M = 4.25, SD = 0.75) User satisfaction after development (M = 4.18, SD = 0.34) was also significantly higher than before (M = 2.00, SD = 0.23) (t = -14.57, p-value < .001), with the highest satisfaction in movement speed (M = 4.58, SD = 0.67)

In conclusion, the newly developed electric motor–driven mobile X-ray cart demonstrates higher performance and user satisfaction compared to conventional methods. It can be effectively implemented to reduce workload, enhance safety, and improve the efficiency of medical services at Surat Thani Cancer Hospital.