Ultrasound guidance system for prostate biopsy

Johann Hummel; Reinhard Kerschner; Marcus Kaar; Wolfgang Birkfellner; Michael Figl

doi:10.1117/12.2254004

3 March 2017 Ultrasound guidance system for prostate biopsy

Johann Hummel, Reinhard Kerschner, Marcus Kaar, Wolfgang Birkfellner, Michael Figl

Proceedings Volume 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling; 101352A (2017) https://doi.org/10.1117/12.2254004
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

We designed a guidance system for prostate biopsy based on PET/MR images and 3D ultrasound (US). With our proposed method common inter-modal MR-US (or CT-US in case of PET/CTs) registration can be replaced by an intra-modal 3D/3D-US/US registration and an optical tracking system (OTS). On the pre-operative site, a PET/MR calibration allows to link both hybrid modalities with an abdominal 3D-US. On the interventional site, another abdominal 3D US is taken to merge the pre-operative images with the real-time 3D-US via 3D/3D-US/US registration. Finally, the images of a tracked trans-rectal US probe can be displayed with the pre-operative images by overlay. For PET/MR image fusion we applied a point-to-point registration between PET and OTS and MR and OTS, respectively. 3D/3D-US/US registration was evaluated for images taken in supine and lateral patient position. To enable table shifts between PET/MR and US image acquisition a table calibration procedure is presented. We found fiducial registration errors of 0.9 mm and 2.8 mm, respectively, with respect to the MR and PET calibration. A target registration error between MR and 3D US amounted to 1.4 mm. The registration error for the 3D/3D-US/US registration was found to be 3.7 mm. Furthermore, we have shown that ultrasound is applicable in an MR environment.

Citation Download Citation

Johann Hummel, Reinhard Kerschner, Marcus Kaar, Wolfgang Birkfellner, and Michael Figl "Ultrasound guidance system for prostate biopsy", Proc. SPIE 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling, 101352A (3 March 2017); https://doi.org/10.1117/12.2254004

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KEYWORDS

Image registration

Positron emission tomography

Image fusion

Calibration

Prostate

Magnetic resonance imaging

Ultrasonography

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