PURPOSE: To assess retrospectively the clinical accuracy of an magnetic resonance imaging-guided robotic prostate biopsy system that has been used in the US National Cancer Institute for over 6 years. METHODS: Series of 2D transverse volumetric MR image slices of the prostate both pre (high-resolution T2-weighted)- and post (low-resolution)- needle insertions were used to evaluate biopsy accuracy. A three-stage registration algorithm consisting of an initial two-step rigid registration followed by a B-spline deformable alignment was developed to capture prostate motion during biopsy. The target displacement (distance between planned and actual biopsy target), needle placement error (distance from planned biopsy target to needle trajectory), and biopsy error (distance from actual biopsy target to needle trajectory) were calculated as accuracy assessment. RESULTS: A total of 90 biopsies from 24 patients were studied. The registrations were validated by checking prostate contour alignment using image overlay, and the results were accurate to within 2 mm. The mean target displacement, needle placement error, and clinical biopsy error were 5.2, 2.5, and 4.3 mm, respectively. CONCLUSION: The biopsy error reported suggests that quantitative imaging techniques for prostate registration and motion compensation may improve prostate biopsy targeting accuracy.
PURPOSE: To assess retrospectively the clinical accuracy of an magnetic resonance imaging-guided robotic prostate biopsy system that has been used in the US National Cancer Institute for over 6 years. METHODS: Series of 2D transverse volumetric MR image slices of the prostate both pre (high-resolution T2-weighted)- and post (low-resolution)- needle insertions were used to evaluate biopsy accuracy. A three-stage registration algorithm consisting of an initial two-step rigid registration followed by a B-spline deformable alignment was developed to capture prostate motion during biopsy. The target displacement (distance between planned and actual biopsy target), needle placement error (distance from planned biopsy target to needle trajectory), and biopsy error (distance from actual biopsy target to needle trajectory) were calculated as accuracy assessment. RESULTS: A total of 90 biopsies from 24 patients were studied. The registrations were validated by checking prostate contour alignment using image overlay, and the results were accurate to within 2 mm. The mean target displacement, needle placement error, and clinical biopsy error were 5.2, 2.5, and 4.3 mm, respectively. CONCLUSION: The biopsy error reported suggests that quantitative imaging techniques for prostate registration and motion compensation may improve prostate biopsy targeting accuracy.
Authors: Axel Krieger; Robert C Susil; Cynthia Ménard; Jonathan A Coleman; Gabor Fichtinger; Ergin Atalar; Louis L Whitcomb Journal: IEEE Trans Biomed Eng Date: 2005-02 Impact factor: 4.538
Authors: Helen Xu; Andras Lasso; Siddharth Vikal; Peter Guion; Axel Krieger; Aradhana Kaushal; Louis L Whitcomb; Gabor Fichtinger Journal: Med Image Comput Comput Assist Interv Date: 2010
Authors: Kristy K Brock; Alan M Nichol; Cynthia Ménard; Joanne L Moseley; Padraig R Warde; Charles N Catton; David A Jaffray Journal: Med Phys Date: 2008-09 Impact factor: 4.071
Authors: Sota Oguro; Junichi Tokuda; Haytham Elhawary; Steven Haker; Ron Kikinis; Clare M C Tempany; Nobuhiko Hata Journal: J Magn Reson Imaging Date: 2009-11 Impact factor: 4.813
Authors: A V Taira; G S Merrick; R W Galbreath; H Andreini; W Taubenslag; R Curtis; W M Butler; E Adamovich; K E Wallner Journal: Prostate Cancer Prostatic Dis Date: 2009-09-29 Impact factor: 5.554
Authors: Pedro Moreira; Niravkumar Patel; Marek Wartenberg; Gang Li; Kemal Tuncali; Tamas Heffter; Everette C Burdette; Iulian Iordachita; Gregory S Fischer; Nobuhiko Hata; Clare M Tempany; Junichi Tokuda Journal: Phys Med Biol Date: 2018-10-16 Impact factor: 3.609
Authors: Graham R Hale; Filippo Pesapane; Sheng Xu; Ivane Bakhutashvili; Neil Glossop; Baris Turkbey; Peter A Pinto; Bradford J Wood Journal: Eur Radiol Exp Date: 2020-04-16