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.
Original language | English (US) |
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Pages (from-to) | 683-687 |
Number of pages | 5 |
Journal | Magnetic resonance in medicine |
Volume | 52 |
Issue number | 3 |
DOIs | |
State | Published - Sep 2004 |
Externally published | Yes |
Keywords
- Biopsy
- Brachytherapy
- Interventional MRI
- MRI
- Prostate
- Prostatic neoplasms
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging