Abstract #4398

Increased Applicability of a Manipulator to Assist MR Guided Microwave Ablation of Liver Tumors and Clinical Experiences of 14 Cases

Shigehiro Morikawa¹, Toshiro Inubushi¹, Shigeyuki Naka², Koichiro Murakami², Yoshimasa Kurumi², Tohru Tani², Hasnine Akter Haque³, Junichi Tokuda⁴, Nobuhiko Hata⁴

¹Biomedical MR Science Center, Shiga University of Medical Science, Ohtsu, Shiga, Japan; ²Department of Surgery, Shiga University of Medical Science, Ohtsu, Shiga, Japan; ³GE Yokogawa Medical System, Hino, Tokyo, Japan; ⁴Brigham and Women's Hospital, Boston, MA, USA

We developed a motorized MR-compatible manipulator with synergetic remote-center-of-motion control to assist MR guided microwave ablation of liver tumors and started clinical studies using it. To increase the applicability of this manipulator, several types of adaptors of the handpiece were developed. As a result, lateral approach to tumors was enabled and liver tumors in various locations could be punctured under the assistance of this manipulator. We have already experienced 14 clinical cases with liver tumors. All cases were successfully treated without any complications. Nowadays, this manipulator is routinely used in this procedure.