Active MRI tracking for robotic assisted FUS

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    Abstract

    MR guided FUS is a noninvasive method producing thermal necrosis at the position of tumors with high accuracy and temperature control. Because the typical size of the ultrasound focus is smaller than the area of interested treatment tissues, focus repositioning become necessary to achieve multiple sonications to cover the whole targeted area. Using MR compatible mechanical actuators could help the ultrasound beam to reach a wider treatment range than using electrical beam steering technique and more flexibility in position the transducer. An active MR tracking technique was combined into the MRgFUS system to help locating the position of the mechanical actuator and the FUS transducer. For this study, a precise agar reference model was designed and fabricated to test the performance of the active tracking technique when it was used on the MR-compatible robotics InnoMotion™ (IBSMM, Engineering spol. s r.o. / Ltd, Czech Republic). The precision, tracking range and positioning speed of the combined robotic FUS system were evaluated in this study. Compared to the existing MR guided HIFU systems, the combined robotic system with active tracking techniques provides a potential that allows the FUS treatment to operate in a larger spatial range and with a faster speed, which is one of the main challenges for organ motion tracking.

    Original languageEnglish
    Title of host publicationProceedings from the 13th International Symposium on Therapeutic Ultrasound
    PublisherAIP Publishing
    Volume1816
    ISBN (Electronic)9780735414846
    DOIs
    Publication statusPublished - 1 Mar 2017
    Event13th International Symposium on Therapeutic Ultrasound, ISTU 2013 - Shanghai, China
    Duration: 12 May 201315 May 2013

    Conference

    Conference13th International Symposium on Therapeutic Ultrasound, ISTU 2013
    CountryChina
    CityShanghai
    Period12/05/1315/05/13

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