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Mechatronic system for in‐bore MRI‐guided insertion of needles to the prostate: An in vivo needle guidance accuracy study
Author(s) -
Cepek Jeremy,
Lindner Uri,
Ghai Sangeet,
Louis Alyssa S.,
Davidson Sean R.H.,
Gertner Mark,
Hlasny Eugen,
Sussman Marshall S.,
Fenster Aaron,
Trachtenberg John
Publication year - 2015
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.24742
Subject(s) - medicine , prostate , prostate cancer , interquartile range , context (archaeology) , ablation , radiology , tumor ablation , magnetic resonance imaging , nuclear medicine , biomedical engineering , surgery , cancer , paleontology , biology
Background To present our experiences in initial clinical evaluation of a novel mechatronic system for in‐bore guidance of needles to the prostate for MRI‐guided prostate interventions in 10 patients. We report accuracy of this device in the context of focal laser ablation therapy for localized prostate cancer. Methods An MRI‐compatible needle guidance device was developed for transperineal prostate interventions. Ten patients underwent MRI‐guided focal laser ablation therapy with device‐mediated laser fiber delivery. We recorded needle guidance error and needle delivery time. Results A total of 37 needle insertions were evaluated. Median needle guidance error was 3.5 mm (interquartile range, 2.1–5.4 mm), and median needle delivery time was 9 min (interquartile range, 6.5–12 min). Conclusion This system provides a reliable method of accurately aligning needle guides for in‐bore transperineal needle delivery to the prostate. J. Magn. Reson. Imaging 2015;42:48–55 . © 2014 Wiley Periodicals, Inc .