Transperineal MR-Guided Stereotactic Prostate Biopsy Utilizing a Commercially Available Anorectal Biopsy Device

Abstract

Purpose: To evaluate the feasibility of transperineal MR-guided prostate biopsy using a stereotactical targeting system originally designed for anorectal usage.

Materials and Methods: A commercially available DynaTRIM MR targeting system (Invivo corp., Gainesville FL, USA) originally designed only for anorectal application was used on a 70 cm wide-bore, whole-body 3 Tesla MR-system (Ingenia, Philips Healthcare, Best, NL). Transperineal biopsy was performed following mulitparametric MR imaging for targeting of the lesion.

Results: The anorectal device allowed for correct localization and successful MR-guided transperineal biopsy of the targeted lesion.

Conclusion: MR-guided transperineal biopsy is feasible using a commercially available anorectal stereotactic biopsy device. This may lead to a broader acceptance of this approach for targeted prostate biopsies.

Zusammenfassung

Ziel: Machbarkeit der transperinealen Prostata-Biopsie mit einer MR-gestützten Stereotaxie-Einheit, welche primär für die transrektale Anwendung konzipiert wurde.

Material und Methoden: Eine kommerziell verfügbare DynaTRIM-MR-Stereotaxie-Einheit (Invivo corp., Gainesville FL, USA), initial konzipiert für die transrektale Probeentnahme, wurde an einem 70 cm wide-bore 3 Tesla Ganzkörper-MRT (Ingenia, Philips Healthcare, Best, NL) eingesetzt. Nach Akquisition einer multiparametrischen MRT zur Tumorlokalisation und Interventionsplanung erfolgte eine transperineale Stanzbiopsie.

Ergebnisse: Die transrektale Stereotaxie-Einheit ermöglichte die korrekte Lokalisation und eine technisch erfolgreiche transperineale Probeentnahme mittels MR-gesteuerter Navigation.

Schlussfolgerung: Eine transperineale Stanzbiopsie ist mit einer kommerziell verfügbaren transrektalen Stereotaxie-Einheit unter MR-Navigation durchführbar. Dies kann zu einer besseren Verbreitung der transperinealen Biopsie-Methode führen.

Key words

prostate - interventional MR - technology assessment

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