Engineering Research Equipment: An Automatic 6-DOF Ultrasound Scanner for in situ Mapping of Biological Surfaces

9412071 Murphy该设备补助金要求为路易斯安那州立大学机械工程系组装的自动六自由度超声扫描系统提供资金。 在原位，无损测量的几何形状的生物表面，包括皮肤，骨骼，软骨，和软骨下骨，将有可能与分辨率在10-20微米的顺序与拟议的系统。 这种分辨率水平对于开发人体关节运动学和动力学的数学模型至关重要。 在典型的关节中，短的僵硬韧带和关节面充当被动约束，补充肌肉系统的主动约束和控制。 韧带伸长被认为在膝关节的正常运动中大约为一毫米，而在手指关节中明显更少。 因此，表面几何形状必须以高精度测量，以开发形成平行系统的关节面和韧带的被动约束行为的有意义的数学模型。 ***

9412071 Murphy This equipment grant requests funds for an automatic six degree- of-freedom ultrasound scanning system to be assembled in the Mechanical Engineering Department at Louisiana State University. In situ, nondestructive measurement of the geometry of biological surfaces, including skin, skeletal, cartilage, and subchondral bone, will be possible with resolution on the order of 10-20 micrometers with the proposed system. This level of resolution is essential for developing mathematical models of the kinematics and dynamics of human joints. In the typical joint, short stiff ligaments and articular surfaces act as passive constraints, complementing the active constraint and control of the muscle system. Ligament elongations are thought to be on the order of one millimeter in normal movements of the knee joints and significantly less in finger joints. Thus surface geometry must be measured with high accuracy in order to develop meaningful mathematical models of passive constraint behavior of the articular surfaces and ligaments which form parallel systems. ***