University of Tehran Journal of Computational Applied Mechanics 2423-6713 50 1 2019 06 01 Design, Evaluation and Prototyping of a New Robotic Mechanism for Ultrasound Imaging 108 117 70504 10.22059/jcamech.2018.257439.282 EN Alireza AbbasiMoshaii Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran Farshid Najafi Department of Mechanical Engineering, University of Tehran, Tehran, Iran Journal Article 2018 05 07 This paper presents a new robotic mechanism for ultrasound imaging. The device is placed on a patient's body by an operator, and an ultrasound expert controls the motions of the device to obtain ultrasound images. The paper focuses on the robotic mechanism that performs ultrasound imaging. The design of the mechanism is based on two approaches to produce center of motion for an ultrasound probe. This center of motion which is located on the tip of the ultrasound probe helps to create clear ultrasound images. Detailed designs, kinematic relationships, prototyping and ultrasound imaging tests are presented. A novel cabling mechanism is developed to create the center of motion required for ultrasound imaging. The mechanism provides all four necessary motions for ultrasound imaging by using two actuators which significantly reduces the weight of the device to make it suitable for portable ultrasound applications. The device has been successfully used for ultrasound imaging of kidney, gallbladder, liver, ovary and uterus of volunteer patients. https://jcamech.ut.ac.ir/article_70504_fe80521591c41b8c62af81e73765731b.pdf