Browsing by Author "Gustafson, G. S."

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    System for prostate brachytherapy and biopsy in a standard 1.5 T MRI scanner
    (John Wiley & Sons, 2004) Susil, R.C.; Camphausen, K.; Choyke, P.; McVeigh, E. R.; Gustafson, G. S.; Ning, H.; Miller, R. W.; Atalar, Ergin; Coleman, C. N.; Ménard, C.
    A technique for transperineal high-dose-rate (HDR) prostate brachytherapy and needle biopsy in a standard 1.5 T MRI scanner is demonstrated. In each of eight procedures (in four patients with intermediate to high risk localized prostate cancer), four MRI-guided transperineal prostate biopsies were obtained followed by placement of 14-15 hollow transperineal catheters for HDR brachytherapy. Mean needle-placement accuracy was 2.1 mm, 95% of needle-placement errors were less than 4.0 mm, and the maximum needle-placement error was 4.4 mm. In addition to guiding the placement of biopsy needles and brachytherapy catheters, MR images were also used for brachytherapy treatment planning and optimization. Because 1.5 T MR images are directly acquired during the interventional procedure, dependence on deformable registration is reduced and online image quality is maximized.