Clinical Trial of an Upper Limb Measurement Device

This clinical study evaluates an upper limb measurement device designed to measure upper limb volume. The study will compare measurements obtained using the upper limb measurement device with those obtained using the water displacement method. The study will assess the effectiveness, accuracy, consistency, and measurement time of the device, as well as its safety and usability. Approximately 220 participants will be enrolled, including primarily patients who have undergone breast cancer treatment and a small proportion of healthy participants. Each participant will undergo upper limb volume measurements using both methods, with the measurement order randomized.