Accuracy validation for MRI-guided robotic prostate biopsy

Helen Xu; Andras Lasso; Siddharth Vikal; Peter Guion; Axel Krieger; Aradhana Kaushal; Louis L. Whitcomb; Gabor Fichtinger

doi:10.1117/12.844251

23 February 2010 Accuracy validation for MRI-guided robotic prostate biopsy

Helen Xu, Andras Lasso, Siddharth Vikal, Peter Guion, Axel Krieger, Aradhana Kaushal, Louis L. Whitcomb, Gabor Fichtinger

Author Affiliations +

Proceedings Volume 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling; 762517 (2010) https://doi.org/10.1117/12.844251
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

We report a quantitative evaluation of the clinical accuracy of a MRI-guided robotic prostate biopsy system that has been in use for over five years at the U.S. National Cancer Institute. A two-step rigid volume registration using mutual information between the pre and post needle insertion images was performed. Contour overlays of the prostate before and after registration were used to validate the registration. A total of 20 biopsies from 5 patients were evaluated. The maximum registration error was 2 mm. The mean biopsy target displacement, needle placement error, and biopsy error was 5.4 mm, 2.2 mm, and 5.1 mm respectively. The results show that the pre-planned biopsy target did dislocate during the procedure and therefore causing biopsy errors.

Citation Download Citation

Helen Xu, Andras Lasso, Siddharth Vikal, Peter Guion, Axel Krieger, Aradhana Kaushal, Louis L. Whitcomb, and Gabor Fichtinger "Accuracy validation for MRI-guided robotic prostate biopsy", Proc. SPIE 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling, 762517 (23 February 2010); https://doi.org/10.1117/12.844251

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available