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System for prostate brachytherapy and biopsy in a standard 1.5 T MRI scanner

✍ Scribed by Robert C. Susil; Kevin Camphausen; Peter Choyke; Elliot R. McVeigh; Gary S. Gustafson; Holly Ning; Robert W. Miller; Ergin Atalar; C. Norman Coleman; Cynthia Ménard

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
449 KB
Volume
52
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

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. Magn Reson Med 52:683–687, 2004. Published 2004 Wiley‐Liss, Inc.

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