Ultrasound is a useful tool for integrating clinical assessment with a bedside reliable imaging technique, but it requires adequate training. Ultrasonographic training involves examination performed on human models, in which many pathologic findings are not always readily available for the trainee to observe. The possibility of creating test objects that reproduce pathologic images allows the provision of training courses with those elements that are not always available. Our aims were to describe how to create a urinary bladder test object and to test its image quality and usefulness. Thus, we compared computed volume with the actual filling volume for five different devices to assess their reliability in volume estimation. Moreover, we evaluated the image quality and teaching utility using a 5-point Likert-type questionnaire among a group of learners. Computed bladder volume had excellent correlation with actual filling volume (p < 0.001, R² = 0.9874). Trainees judged the ultrasound exploration realistic and considered the device useful in understanding ultrasound images and improving ultrasound skills. In conclusion, our device contributes to ultrasound training by providing a realistic ultrasound image, improving image understanding and skill development and allowing reliable bladder volume estimation.

超声是将临床评估与可靠的床边成像技术相结合的有用工具，但它需要足够的培训。超声培训涉及对人体模型进行的检查，其中许多病理结果并不总是可供受训者随时观察到。创建再现病理图像的测试对象的可能性允许提供具有那些并不总是可用的元素的培训课程。我们的目标是描述如何创建膀胱测试对象并测试其图像质量和实用性。因此，我们比较了五种不同设备的计算体积与实际填充体积，以评估它们在体积估计中的可靠性。而且，我们在一组学习者中使用 5 点李克特式问卷评估了图像质量和教学效用。计算出的膀胱容量与实际充盈量有极好的相关性（p < 0.001，R ²  = 0.9874）。学员对超声探索的判断是真实的，并认为该设备有助于理解超声图像和提高超声技能。总之，我们的设备通过提供逼真的超声图像、提高图像理解和技能发展以及允许可靠的膀胱容量估计来促进超声训练。