Development of a Three-dimensional Surgical Navigation System with Magnetic Resonance Angiography and a Three-dimensional Printer for Robot-assisted Radical Prostatectomy.

Autor:	Jomoto W; Department of Radiological Technology, Hyogo College of Medicine College Hospital., Tanooka M; Department of Radiology, Hyogo College of Medicine., Doi H; Department of Radiology, Hyogo College of Medicine., Kikuchi K; Department of Radiological Technology, Hyogo College of Medicine College Hospital., Mitsuie C; Department of Radiological Technology, Hyogo College of Medicine College Hospital., Yamada Y; Department of Urology, Hyogo College of Medicine., Suzuki T; Department of Urology, Hyogo College of Medicine., Yamano T; Department of Radiology, Hyogo College of Medicine., Ishikura R; Department of Radiology, Hyogo College of Medicine., Kotoura N; Department of Radiological Technology, Hyogo College of Medicine College Hospital., Yamamoto S; Department of Urology, Hyogo College of Medicine.
Jazyk:	angličtina
Zdroj:	Cureus [Cureus] 2018 Jan 02; Vol. 10 (1), pp. e2018. Date of Electronic Publication: 2018 Jan 02.
DOI:	10.7759/cureus.2018
Abstrakt:	We sought to develop a surgical navigation system using magnetic resonance angiography (MRA) and a three-dimensional (3D) printer for robot-assisted radical prostatectomy (RARP). Six patients with pathologically proven localized prostate cancer were prospectively enrolled in this study. Prostate magnetic resonance imaging (MRI), consisting of T2-weighted sampling perfection with application-optimized contrasts using different flip-angle evolutions (SPACE) and true fast imaging with steady-state precession (true FISP), reconstructed by volume rendering, was followed by dynamic contrast-enhanced MRA performed with a volumetric interpolated breath-hold examination (VIBE) during intravenous bolus injection of gadobutrol. Images of arterial and venous phases were acquired over approximately 210 seconds. Selected images were sent to a workstation for generation of 3D volume-rendered images and standard triangulated language (STL) files for 3D print construction. The neurovascular bundles (NVBs) were found in sequence on non-contrast images. Accessory pudendal arteries (APAs) were found in all cases in the arterial phase of contrast enhancement but were ill-defined on non-contrast enhanced MRA. Dynamic contrast-enhanced MRA helped to detect APAs, suggesting that this 3D system using MRI will be useful in RARP. Competing Interests: The authors have declared financial relationships, which are detailed in the next section.
Databáze:	MEDLINE
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