Abstract：
BACKGROUND: Magnetic Resonance-guided Focused Ultrasound (MRgFUS) treatment for certain anatomy locations can be extremely challenging due to patient positioning and potential motion. This present study describes the treatment of a recurrent tenosynovial giant cell tumor of the plantar forefoot using the ExAblate 2100 system in combination with patient immobilization device.
METHODS: Prior to the treatment, several patient immobilization devices were investigated. Vacuum cushions were selected and tested for safety and compatibility with the treatment task and the MR environment.
RESULTS: During the treatment, one vacuum cushion immobilized the patient\'s right leg in knee flexion and allowed the bottom of the foot to be securely positioned on the treatment window. Another vacuum cushion supported the patient upper body extended outside the scanner bore. 19 sonications were successfully executed. The treatment was judged to be successful. No immediate complications were observed.
CONCLUSIONS: MRgFUS treatment of a recurrent tenosynovial giant cell tumor of the right plantar forefoot was successful with the use of patient immobilization vacuum cushions.
CONCLUSIONS: The immobilization system could be utilized to aid future MRgFUS treatment of lesions in challenging anatomic locations. Various sizes of the vacuum cushions are available to potentially better accommodate other body parts and treatment configurations.
METHODS: Prior to the treatment, several patient immobilization devices were investigated. Vacuum cushions were selected and tested for safety and compatibility with the treatment task and the MR environment.
RESULTS: During the treatment, one vacuum cushion immobilized the patient\'s right leg in knee flexion and allowed the bottom of the foot to be securely positioned on the treatment window. Another vacuum cushion supported the patient upper body extended outside the scanner bore. 19 sonications were successfully executed. The treatment was judged to be successful. No immediate complications were observed.
CONCLUSIONS: MRgFUS treatment of a recurrent tenosynovial giant cell tumor of the right plantar forefoot was successful with the use of patient immobilization vacuum cushions.
CONCLUSIONS: The immobilization system could be utilized to aid future MRgFUS treatment of lesions in challenging anatomic locations. Various sizes of the vacuum cushions are available to potentially better accommodate other body parts and treatment configurations.
摘要：
背景：由于患者定位和潜在运动，针对某些解剖结构位置的磁共振引导聚焦超声（MRgFUS）治疗可能极具挑战性。本研究描述了使用ExAblate2100系统结合患者固定装置治疗足底前足复发性腱鞘巨细胞瘤的方法。
方法：治疗前，研究了几种患者固定装置.选择真空垫并测试其安全性和与治疗任务和MR环境的兼容性。
结果：治疗期间，一个真空垫固定患者的右腿膝盖弯曲，并允许脚的底部被牢固地定位在治疗窗口。支撑患者上身的另一个真空垫延伸到扫描仪孔的外部。成功执行了19次超声处理。该治疗被认为是成功的。没有观察到立即的并发症。
结论：MRgFUS治疗右足底前足复发性腱鞘巨细胞瘤是成功的，使用患者固定真空垫。
结论：固定系统可用于帮助未来MRgFUS治疗具有挑战性的解剖位置的病变。各种尺寸的真空垫可用于潜在地更好地适应其他身体部位和治疗配置。
方法：治疗前，研究了几种患者固定装置.选择真空垫并测试其安全性和与治疗任务和MR环境的兼容性。
结果：治疗期间，一个真空垫固定患者的右腿膝盖弯曲，并允许脚的底部被牢固地定位在治疗窗口。支撑患者上身的另一个真空垫延伸到扫描仪孔的外部。成功执行了19次超声处理。该治疗被认为是成功的。没有观察到立即的并发症。
结论：MRgFUS治疗右足底前足复发性腱鞘巨细胞瘤是成功的，使用患者固定真空垫。
结论：固定系统可用于帮助未来MRgFUS治疗具有挑战性的解剖位置的病变。各种尺寸的真空垫可用于潜在地更好地适应其他身体部位和治疗配置。
