Abstract #1190

Focus Correction in MR Thermometry for Precise Targeting in Focused Ultrasound Thalamotomy for Essential Tremor: Statistical Study from 121 Sonications in 7 Patients

Chang-Sheng Mei¹, Shenyan Zong², Bruno Madore³, and Nathan McDannold³

¹Physics, Soochow University, Taipei, Taiwan, ²Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China, ³Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States

Focused ultrasound thalamotomy was approved by FDA for the treatment of essential tremor under MRI guidance. However, spatial errors in the location of focal spots are often observed and could jeopardize the patient safety if not taken into account. We previously explained the causes of this error and proposed a correction method. Using the method, data associated with 121 sonications from 7 patients were statistically analyzed in the present study. Results show the focus was shifted by 0.05 mm/°C. The size of shift for treating sonication agrees with the value reported in literature.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.