An automated system for registration and fusion of 3D ultrasound images during cervical brachytherapy procedures

Tiana Trumpour; Jamiel Nasser; Jessica R. Rodgers; Jeffrey Bax; Lori Gardi; Lucas C. Mendez; Kathleen Surry; Aaron Fenster

doi:10.1117/12.3006631

1 April 2024 An automated system for registration and fusion of 3D ultrasound images during cervical brachytherapy procedures

Tiana Trumpour, Jamiel Nasser, Jessica R. Rodgers, Jeffrey Bax, Lori Gardi, Lucas C. Mendez, Kathleen Surry, Aaron Fenster

Author Affiliations +

Proceedings Volume 12932, Medical Imaging 2024: Ultrasonic Imaging and Tomography; 129320Y (2024) https://doi.org/10.1117/12.3006631
Event: SPIE Medical Imaging, 2024, San Diego, California, United States

Abstract

High dose-rate brachytherapy is a typical part of the treatment process for cervical cancer. During this procedure, radioactive sources are placed locally to the malignancy using specialized applicators or interstitial needles. To ensure accurate dose delivery and positive patient outcomes, medical imaging is utilized intra-procedurally to ensure precise placement of the applicator. Previously, the fusion of three-dimensional ultrasound images has been investigated as an alternative volumetric imaging technique during cervical brachytherapy treatments. However, the need to manually register the two three-dimensional ultrasound images offline resulted in excessively large registration errors. To overcome this limitation, we have designed and developed a tracked, automated mechatronic system to inherently register three-dimensional ultrasound images in real-time. We perform a system calibration using an external coordinate system transform and validate the system tracking using a commercial optical tracker. The results of both experiments indicated sub-millimeter system accuracy, indicating the superior performance of our device. Future work for this study includes performing phantom validation experiments and translating our device into clinical work.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tiana Trumpour, Jamiel Nasser, Jessica R. Rodgers, Jeffrey Bax, Lori Gardi, Lucas C. Mendez, Kathleen Surry, and Aaron Fenster "An automated system for registration and fusion of 3D ultrasound images during cervical brachytherapy procedures", Proc. SPIE 12932, Medical Imaging 2024: Ultrasonic Imaging and Tomography, 129320Y (1 April 2024); https://doi.org/10.1117/12.3006631

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