Bilgin Keserci1,2, Young-sun Kim3, Max Oskar Khler4, Hyunchul Rhim3, Hyo Keun Lim3
1Philips Healthcare, Seoul, Korea, Republic of; 2Samsung Medical Center,Department of Radiology, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of; 3Samsung Medical Center, Department of Radiology, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of; 4Philips Healthcare, Finland
As an alternative sonication method in magnetic resonance guided high intensity focused ultrasound treatment, volumetric sonication method with feedback control under volumetric MRI thermometry for the ablation of uterine fibroids was presented. This method efficiently utilizes the inherent heat diffusion by electronically switching the focal point between a number of predetermined locations situated at outwards-moving concentric circles with diameters of upto 16 mm. A significant improvemet in symptom severity score at 1month follow-up over baseline was observed. Volumetric treatment allows for complete and uniform cell coverage, and the delivery of optimal thermal dose significantly minimizing the risk of overtreatment.