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British Journal of Radiology (2003) 76, 913-915
© 2003 British Institute of Radiology
doi: 10.1259/bjr/14541259
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Seed migration in prostate brachytherapy: a re-implant case report

N Di Muzio, MD 1 B Longobardi, PhD 2 A Losa, MD 3 P Mangili, PhD 2 L D Nava, MD 3 P Rigatti, MD 4 R Calandrino, PhD 2 E Villa, MD 1 and G Guazzoni, MD 3

IRCCS S. Raffaele, Departments of 1 Radiochemotherapy, 2 Medical Physics and 4 Urology, Via Olgettina 60-20132 Milano and 3 Casa di Cura Ville Turro, Department of Urology, Via Stamira d'Ancona 20-20127 Milano, Italy



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  		Figure 1. MRI-imaged axial slice of the prostate gland. (a) Post-implant dosimetry reveals a cold area in the transitional, subcapsular zone; (b) post-implant dosimetry after the re-implant confirms the optimal dosimetric coverage of the anterior part.

 


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  		Figure 2. Sagittal, longitudinal section of a "pear-shaped" prostate, with needles in the correct positions to release seeds in the pre-planned anterior subcapsular zone. When a longitudinal ultrasound "real-time" control is not performed, seeds could be misplaced in the venous plexus due to: 1) 0.0 plane definition at fluoroscopy or transverse ultrasound control can be doubtful; 2) too rapid retraction of the needles can drag seeds.

 




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