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Proceedings Paper

Development of a 3D ultrasound-guided prostate biopsy system
Author(s): Derek Cool; Shi Sherebrin; Jonathan Izawa; Aaron Fenster
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Paper Abstract

Biopsy of the prostate using ultrasound guidance is the clinical gold standard for diagnosis of prostate adenocarinoma. However, because early stage tumors are rarely visible under US, the procedure carries high false-negative rates and often patients require multiple biopsies before cancer is detected. To improve cancer detection, it is imperative that throughout the biopsy procedure, physicians know where they are within the prostate and where they have sampled during prior biopsies. The current biopsy procedure is limited to using only 2D ultrasound images to find and record target biopsy core sample sites. This information leaves ambiguity as the physician tries to interpret the 2D information and apply it to their 3D workspace. We have developed a 3D ultrasound-guided prostate biopsy system that provides 3D intra-biopsy information to physicians for needle guidance and biopsy location recording. The system is designed to conform to the workflow of the current prostate biopsy procedure, making it easier for clinical integration. In this paper, we describe the system design and validate its accuracy by performing an in vitro biopsy procedure on US/CT multi-modal patient-specific prostate phantoms. A clinical sextant biopsy was performed by a urologist on the phantoms and the 3D models of the prostates were generated with volume errors less than 4% and mean boundary errors of less than 1 mm. Using the 3D biopsy system, needles were guided to within 1.36 ± 0.83 mm of 3D targets and the position of the biopsy sites were accurately localized to 1.06 ± 0.89 mm for the two prostates.

Paper Details

Date Published: 21 March 2007
PDF: 12 pages
Proc. SPIE 6509, Medical Imaging 2007: Visualization and Image-Guided Procedures, 650910 (21 March 2007); doi: 10.1117/12.709483
Show Author Affiliations
Derek Cool, Robarts Research Institute (Canada)
Univ. of Western Ontario (Canada)
Shi Sherebrin, Robarts Research Institute (Canada)
Jonathan Izawa, London Health Sciences Ctr. (Canada)
Aaron Fenster, Robarts Research Institute (Canada)
Univ. of Western Ontario (Canada)

Published in SPIE Proceedings Vol. 6509:
Medical Imaging 2007: Visualization and Image-Guided Procedures
Kevin R. Cleary; Michael I. Miga, Editor(s)

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